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Sample records for astm a351 cn3mn

  1. Efeito da usinagem na estrutura e propriedades mecânicas do aço superaustenítico ASTM A351 CN3MN

    Directory of Open Access Journals (Sweden)

    Márcio Tadeu Gravalos

    2007-03-01

    Full Text Available Os aços inoxidáveis superaustenítico são assim denominados, pois, além de apresentarem boa resistência à corrosão por pite, reúnem, também, excelentes propriedades mecânicas, o que os torna uma das opções para a fabricação de componentes utilizados pela indústria petrolífera. Entretanto o encruamento superficial, durante os processos de usinagem, pode alterar essas propriedades. Esse trabalho teve, por objetivo, investigar os efeitos da operação de torneamento, na superfície do aço superaustenítico ASTM A351 CN3MN. Amostras do aço fundido sofreram um desbaste por torneamento cilíndrico, com distintas velocidades de corte, utilizando-se de pastilhas de metal duro com geometrias variadas. A análise da microestrutura, na superfície fundida, foi realizada por microscopia óptica e a superfície encruada foi determinada através da microdureza. As propriedades mecânicas do aço foram determinadas por ensaio de tração. O desgaste nas pastilhas de corte foi observado em um MEV.Super austenitic stainless steels are denominated as such because they present good resistance to pitting corrosion and, also, offer excellent mechanical properties, which makes them one of the options for the production of components used by the petroleum industry. However, the superficial foundry hardening during the machining processes can change these properties. This paper aimed at investigating the effects of the machining operation on the surface of the super austenitic steel ASTM A351 CN3MN. Samples of the casted steel suffered wear due to cylindrical machining, with different cutting speeds, using indexable carbide inserts of varied geometries. The analysis of the microstructure on the casting surface was accomplished by optical microscopy and the foundry hardened surface was determined by micro-hardness. The mechanical properties of the steel were determined by traction assay. The wear in the cutting inserts was accomplished in a MEV.

  2. Efeito do tratamento térmico de envelhecimento na microestrutura e nas propriedades de impacto do aço inoxidável superaustenítico ASTM A 744 Gr. CN3MN Aging heat treatment effect on the microstructure and impact properties of the super-austenitic stainless steel ASTM A 744 Gr. CN3MN

    Directory of Open Access Journals (Sweden)

    Márcio Ritoni

    2010-03-01

    Full Text Available O aço inoxidável superaustenítico ASTM A 744 Gr. CN3MN é aplicado na fabricação de equipamentos que trabalham em ambientes sob corrosão severa com solicitação mecânica. Nesse trabalho, investigou-se a influência do tratamento térmico de envelhecimento na microestrutura e nas propriedades de impacto desse tipo de material. Foram realizados tratamentos térmicos de envelhecimento a 900°C por 1,5; 12; 24; 36 e 48 horas. Ensaios de impacto na temperatura ambiente e a -46°C foram realizados nas amostras tratadas termicamente. As análises microestruturais foram feitas por meio de microscopia eletrônica de varredura e difração de raios X. Concluiu-se que quanto maior a o tempo de exposição do material à temperatura de 900°C, menor é a energia absorvida no impacto. Com 1,5 horas o material apresentou redução na resistência ao impacto de 128 para 25 Joules. O tratamento térmico a 900°C por 48 horas causou a precipitação de algumas fases na matriz austenítica, sendo as mais prováveis: sigma (σ, chi (χ e carboneto M23C6.ASTM A 744 Gr. CN3MN superaustenitic stainless steel is employed in the manufacture of equipments designed to work in severely corrosive environments under mechanical loads. This research investigated the influence of aging heat treatments on the microstructure and impact properties of this type of material. These treatments were carried out at temperature of 900ºC for different periods of time: 1.5; 12; 24; 36 and 48 hours. Impact Charpy tests were conducted at room temperature and -46°C for all heat treated samples. The microstructural analyses were carried out by optical microscopy, scanning electron microscopy and X-ray diffraction. It was concluded that as long as the steel was exposed to 900ºC, the energy absorbed during impact was lower. After 1.5 hours at 900ºC the impact energy dropped from 128 to 25 Joules. The samples heat treated at 900ºC for 48 hours showed precipitation of some phases at

  3. Efeito do tratamento térmico de solubilização na microestrutura e nas propriedades de impacto do aço inoxidável superaustenítico ASTM A 744 Gr. CN3MN Aging heat treatment effect on the microstructure and impact properties of the super-austenitic stainless steel ASTM A 744 Gr. CN3MN

    Directory of Open Access Journals (Sweden)

    Márcio Ritoni

    2010-03-01

    Full Text Available O aço inoxidável superaustenítico ASTM A 744 Gr. CN3MN é aplicado na fabricação de equipamentos que trabalham em ambientes sob corrosão severa com solicitação mecânica. Nesse trabalho investigou-se a influência do tratamento térmico de solubilização na microestrutura e nas propriedades desse tipo de material. Foram realizados tratamentos térmicos de solubilização na faixa de temperaturas entre 1100 e 1250°C. Ensaios de impacto (Charpy em temperatura ambiente e a -46°C foram realizados nas amostras tratadas termicamente. As análises microestruturais foram feitas por meio de microscopia eletrônica de varredura, eletrônica de transmissão e difração de raios X. Concluiu-se que, para maximizar a resistência ao impacto, a solubilização deve ser feita a 1200°C, pois tal medida produz a menor fração volumétrica de precipitados. As amostras solubilizadas a 1200 e 1240°C apresentaram fase sigma (s e carboneto M6C.This research investigated the influence of solution heat treatments on the microstructure and properties of this type of material. These treatments were carried out at temperatures ranging from 1100 to 1250ºC. Impact (Charpy tests were conducted at room temperature and -46°C for all solution treated samples. The microstructural analyses were carried out by scanning electron microscopy, transmission electron microscopy and X-ray diffraction. It was concluded that, to maximize the material's impact strength, the solution heat treatment should be done at 1200ºC, at which temperature the volumetric fraction of precipitates is lower than at other solution heat treatment temperatures. The samples that were solution heat treated at 1200 and 1240ºC presented sigma (s and M6C carbide phases.

  4. Efeito da usinagem na estrutura e propriedades mecânicas do aço superaustenítico ASTM A351 CN3MN

    OpenAIRE

    Márcio Tadeu Gravalos; Marcelo Martins; Anselmo Eduardo Diniz; Paulo Roberto Mei

    2007-01-01

    Os aços inoxidáveis superaustenítico são assim denominados, pois, além de apresentarem boa resistência à corrosão por pite, reúnem, também, excelentes propriedades mecânicas, o que os torna uma das opções para a fabricação de componentes utilizados pela indústria petrolífera. Entretanto o encruamento superficial, durante os processos de usinagem, pode alterar essas propriedades. Esse trabalho teve, por objetivo, investigar os efeitos da operação de torneamento, na superfície do aço superauste...

  5. Funkcionalna dijagnostika astme

    OpenAIRE

    Plavec, Davor; Turkalj, Mirjana; Erceg, Damir

    2011-01-01

    Od astme u svijetu danas boluje oko 235 milijuna ljudi uz i dalje znatan porast pojavnosti te značajne međuregionalne razlike u učestalosti (2-35%). Osnovni patofiziološki mehanizam jest upala dišnih putova, a povremena i varijabilna opstrukcija dišnih putova te bronhalna hiperreaktivnost njezine su izravne i mjerljive manifestacije. Dijagnoza se postavlja klinički, ali se temeljem podležećih patofizioloških procesa dopunjuje funkcionalnom dijagnostikom. Dijagnostiku treba započeti spirometri...

  6. ASTM reference radiologic digital image standards

    International Nuclear Information System (INIS)

    ASTM Reference Radiographs have been essential in defining industry's material defect grade levels for many years. ASTM Reference Radiographs are used extensively as even the American Society for Metals Nondestructive Inspection and Quality Control Metals Handbook, Volume 11, eighth edition refers to ASTM Standard Reference Radiographs. The recently published E 1648 Standard Reference Radiographs for Examination of Aluminum Fusion Welds is a prime example of the on-going need for these references. To date, 14 Standard Reference Radiographs have been published to characterize material defects. Standard Reference Radiographs do not adequately address film-less radiologic methods. There are differences in mediums to content with. On a computer CRT defect indications appear differently when compared to indications viewed in a radiograph on a view box. Industry that uses non-film radiologic methods of inspection can be burdened with additional time and money developing internal standard reference radiologic images. These references may be deemed necessary for grading levels of product defects. Because there are no ASTM Standard Reference Radiologic data files for addressing this need in the industry, the authors of this paper suggested implementing a method for their creation under ASTM supervision. ASTM can assure continuity to those users making the transition from analog radiographic images to digital image data by swiftly addressing the requirements for reference digital image standards. The current status and possible future activities regarding a method to create digital data files is presented in this paper summary

  7. LIJEČENJE EGZACERBACIJA ASTME U ODRASLIH

    OpenAIRE

    MATKOVIĆ, ZINKA; PISKAČ, NEVENKA; Ljubičić, Đivo; Tudorić, Neven

    2010-01-01

    Egzacerbaciju astme najčešće karakterizira brzo i progresivno pogoršanje simptoma ove bolesti: zaduhe, kašlja, piskanja i osjećaja pritiska u prsima. Intenzitet egzacerbacije može varirati od sasvim blagog, kratkotrajnog pogoršanja popraćenog podražajnim kašljem i blagom zaduhom pa sve do vrlo teškog, za život opasnog stanja. Klinička obilježja napadaja astme su ubrzano disanje, kašalj, produžen i otežan ekspirij. Opstruktivne smetnje disanja mogu se objektivizirati i pratiti mjerenjem plućne...

  8. ASTM insulation standards and energy conservation

    Energy Technology Data Exchange (ETDEWEB)

    McAllister, J.D.

    1982-12-01

    Traces the history of thermal insulation technology and standards since the commercialization of the steam engine in the late 18th century. Reveals that the development of magnesium carbonate as an insulation, and use of asbestos fiber as a heat resistant reinforcing material marked the transition of the insulation industry from small entrepreneurs to large corporate organizations. Points out that many of the world's current insulation manufacturers marked their genesis in the 1890-1910 period. Emphasizes that when the energy crisis occurred, C-16 standards for residential, commercial, and industrial insulation materials, application methods, and performance evaluation were either already available or, in the case of cellulosic and foam-in-place insulations, quickly prepared. Reports that a subcommittee has been formed to translate government specifications for commercial grade insulations to ASTM format, as in accordance with OMB Circular A119 which promotes the use of voluntary consensus standards by government agencies.

  9. ASTM Standards for Reactor Dosimetry and Pressure Vessel Surveillance

    International Nuclear Information System (INIS)

    The ASTM standards provide guidance and instruction on how to field and interpret reactor dosimetry. They provide a roadmap towards understanding the current ''state-of-the-art'' in reactor dosimetry, as reflected by the technical community. The consensus basis to the ASTM standards assures the user of an unbiased presentation of technical procedures and interpretations of the measurements. Some insight into the types of standards and the way in which they are organized can assist one in using them in an expeditious manner. Two example are presented to help orient new users to the breadth and interrelationship between the ASTM nuclear metrology standards. One example involves the testing of a new ''widget'' to verify the radiation hardness. The second example involves quantifying the radiation damage at a pressure vessel critical weld location through surveillance dosimetry and calculation

  10. The damage property of oxyfluoride glasses irradiated by a 351 nm high fluence laser

    International Nuclear Information System (INIS)

    The laser induced damage property of oxyfluoride glasses irradiated by a 351 nm laser has been investigated. Two kinds of oxyfluoride glass (oxyfluoride1 and oxyfluoride2) have been prepared by different preparation technologies and their LIDTs (laser induced damage thresholds) are 9.0 J cm−2 and 13.6 J cm−2 respectively. It is found that the variation of LIDT in oxyfluoride glasses is associated with photoluminescence originated structural defects. Decrease of the photoluminescence intensity in an oxyfluoride glass could improve the LIDT of the material. Meanwhile, an experiment on damage growth has been presented, and the damage growth of oxyfluoride glasses develops in the longitudinal direction of laser propagation, which causes the transmittance loss to be limited once the damage growth occurs. Moreover, the damage growth stops when the laser fluence is below 70% of the LIDT. (paper)

  11. HACCP: Integrating Science and Management through ASTM Standards

    Science.gov (United States)

    From a technical perspective, hazard analysis-critical control point (HACCP) evaluation may be considered a risk management tool suited to a wide range of applications. As one outcome of a symposium convened by American Society for Testing and Materials (ASTM) in August, 2005, th...

  12. Zbrinjavanje akutne astme u hitnoj službi

    OpenAIRE

    Matković, Zinka; Piskač-Živković, Nevenka

    2011-01-01

    Egzacerbaciju astme karakterizira pogoršanje osnovnih simptoma bolesti – zaduhe, kašlja, piskanja i/ili pritiska u prsima, koji se javljaju kao posljedica progresivne bronhoopstrukcije i otežanog ekspirija. Dok se blage egzacerbacije uglavnom uspješno liječe ambulantno u okviru primarne zdravstvene zaštite, one umjerene i teške zahtijevaju liječenje u bolničkoj hitnoj službi, a nerijetko i hospitalizaciju. Pristup bolesniku s astmom u hitnoj službi uključuje brzu procjenu težine egzacerbacije...

  13. Technical issues relevant to ASTM LWR surveillance standards

    International Nuclear Information System (INIS)

    Specific physics-dosimetry-metallurgy issues are considered that will impact on current and future revisions of the thirty-four standards that have been identified for the next revision of the ASTM E706 master Matrix of LWR Surveillance Standards, E706(0). Two major classes of technical issues are identified, namely those associated with (1) physics-dosimetry methodology and (2) physically based modeling methodology. Symposium papers were reviewed to select the more important issues that exist in these two classes. A synthesis of these issues are presented. 53 refs

  14. Recommendations for fluorescence instrument qualification: the new ASTM Standard Guide.

    Science.gov (United States)

    DeRose, Paul C; Resch-Genger, Ute

    2010-03-01

    Aimed at improving quality assurance and quantitation for modern fluorescence techniques, ASTM International (ASTM) is about to release a Standard Guide for Fluorescence, reviewed here. The guide's main focus is on steady state fluorometry, for which available standards and instrument characterization procedures are discussed along with their purpose, suitability, and general instructions for use. These include the most relevant instrument properties needing qualification, such as linearity and spectral responsivity of the detection system, spectral irradiance reaching the sample, wavelength accuracy, sensitivity or limit of detection for an analyte, and day-to-day performance verification. With proper consideration of method-inherent requirements and limitations, many of these procedures and standards can be adapted to other fluorescence techniques. In addition, procedures for the determination of other relevant fluorometric quantities including fluorescence quantum yields and fluorescence lifetimes are briefly introduced. The guide is a clear and concise reference geared for users of fluorescence instrumentation at all levels of experience and is intended to aid in the ongoing standardization of fluorescence measurements. PMID:20136134

  15. Measuring the Real Fracture Toughness of Ceramics: ASTM C 1421

    Science.gov (United States)

    Salem, Jonathan; Quinn, George; Jenkins, Michael

    ASTM C 1421 "Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature" is a high-quality, technicallyrigorous, full-consensus standard that may have finally answered the question, "What is the 'real' fracture toughness of ceramics?" This document was eight years in the actual standardization process (although an estimated two decades of preparation work may have preceded the actual standardization process). Three different types of notch/crack geometries are employed in flexure beams: single edge precracked beam (SEPB); chevron-notched beam (CNB), and surface crack in flexure (SCF). Extensive experimental, analytical, and numerical evaluations were conducted in order to mitigate interferences that frequently lower the accuracy of fracture toughness test results. Several round robins (e.g. Versailles Advanced Materials and Standards {VAMAS}) verified and validated the choice of dimensions and test parameters included in the standard. In addition, the standard reference material NIST SRM 2100 was developed and can be used in concert with ASTM C 1421 to validate a fracture toughness test setup or test protocol.

  16. Systematic Microstructural and Corrosion Performance Evaluation of CK-3MCuN and CN-3MN High Molybdenum Stainless Steel Castings

    Energy Technology Data Exchange (ETDEWEB)

    C.D. Lundin; S. Wen; W. Liu; G. Zhou

    2001-10-01

    High molybdenum austenitic stainless steel castings are widely accepted for their high strength, excellent weldability, and good corrosion resistance over a wide range of temperatures in highly oxidizing aqueous and gaseous media in chemical processing and other environments. With their desirable performance, high molybdenum austenitic stainless steel castings are increasingly applied in industry in a similar manner as wrought materials. In general, cast and wrought stainless and high alloy steels are anticipated to possess equivalent resistance to corrosive media, and they are frequently used in conjunction with each other. However, alloying element segregation usually is more evident in castings than in wrought counterparts. Segregation of alloying elements can lead to the formation of secondary phases, such as sigma. Mechanical properties and especially the corrosion resistance of castings may be affected by the secondary phases. In addition, improper heat treatment procedures c an also lead to the formation of carbides and secondary phases in high alloy and austenitic stainless steels.

  17. Specifičnosti astme dječje dobi

    OpenAIRE

    IVKOVIĆ-JUREKOVIĆ, IRENA

    2013-01-01

    Astma u djece najčešće počinje u ranoj dobi i ima varijabilan tijek i različitu kliničku pojavnost. U djece se astma očituje različitim fenotipovima koji se mogu preklapati, ući u remisiju, ali i perzistirati do odrasle dobi. Razlikovanje astme od ponavljanog piskanja povezanog s drugim bolestima u prvim godinama života nije jednostavno. Astma u školske djece i adolescenata značajno je češće povezana s alergijom nego astma u odraslih. Klinička ekspresija bolesti, važnost alergije i nespecifič...

  18. Analysis of the thixoability of ASTM A536 ductile iron

    Directory of Open Access Journals (Sweden)

    M.H. Robert

    2008-06-01

    Full Text Available Purpose: Thixoability of the ASTM A536 nodular cast iron is analyzed, it meaning its ability to hold a thixotropic semi-solid state and to be formed as such. Thixoability can be characterized by the solidification range, fraction of primary phase and sensitiveness of liquid fraction with temperature (dfl/dT within the solidification range. It is also investigated the effect of thixocasting in the microstructure of the considered alloy.Design/methodology/approach: Differential thermal analysis, differential scanning calorimetry and thermodynamic calculation package THERMOCALC were used to predict transformations temperatures involving liquid formation and dfl/dT within the solidification range. Microstructures of thixotropic slurries produced by partial melting were observed.Findings: Thixoforming of ASTM A536 nodular iron can be considered in a narrow window of about 28°C, were some dissolution of graphite nodules can still be afforded; this window meaning the range of temperatures of co-existence of austenite + graphite + liquid were the eutectic transformation is taking place. At higher temperatures the dissolution of graphite nodules in liquid can be significant.Research limitations/implications: Thixoability prediction models rely on sensitive experiments as thermoanalysis, with results strongly dependent on experimental conditions; and on thermodynamic data, sometimes not available or reliable for a specific alloy composition.Practical implications: The prediction of the thixoability of a certain alloy can make it more effective its thixoprocessing, allows better control of processing parameters and quality of final product; can also subsidize modifications in the alloy to make it more suitable to semi-solid processing.Originality/value: The study of the thixoability of a nodular hypereutectic cast iron is an original subject, not available in the specialized literature, however absolutely necessary if thixoprocessing of this family of

  19. Developing the (ASTM) voluntary consensus standards required to help implement the National Energy Plan

    International Nuclear Information System (INIS)

    The recommended guide is the first American Society for Testing and Materials (ASTM) matrix in a family of such documents that combined, will help manage the development of the ASTM standards considered necessary to implement the current National Plan for Energy Research, Development, and Demonstration. It is expected that the guide will provide a framework for standards development to complement the nation's research and development in support of critical energy needs. The recommended guide identifies the energy-critical areas that are to be developed, the master ASTM recommended guide for developing the standards required to help the National Plan, the section in which each energy-critical area is covered, and the suggested ASTM lead committee responsible for each area (fossil, solar, geothermal, conservation, fusion, and fission reactor development). A comprehensive matrix to identify the areas of need for which ASTM standards will be required to help implement the National Energy Plan is also presented

  20. Study on the Similarities and Differences of Body Measurement Terminology between ASTM and China GB Standard

    Institute of Scientific and Technical Information of China (English)

    方方; 张渭源; 张文斌

    2003-01-01

    The similarities and differences of ASTM and China GB standard are studied in three aspects:measure instrument,terminology and applicable field.They are similar on the measuring apparatus and GB has less measurements,such as girth,length and width measurements than ASTM and it lack across chest width,back width,total crotch length and shoulder slope which are important measurements in pattern making.ASTM classifies its standards according to the customers' size,gender and age.So we think GB standard could make some modifications from these fields to satisfy the users.

  1. Standard reference radiograph for evaluating the performance of radiographic digitization systems. ASTM standard

    International Nuclear Information System (INIS)

    This reference is under the jurisdiction of ASTM Committee E-7 on Nondestructive Testing and is the direct responsibility of Subcommittee E07.02 on Reference Radiological Images. Current edition approved Dec. 10, 1997 and published June 1998

  2. ASTM 4130自动氩弧焊堆焊 Inconel 625焊接工艺%Procedure of 625 Overlay Weld on ASTM 4130 75K

    Institute of Scientific and Technical Information of China (English)

    郭必永

    2014-01-01

    通过理论分析及试验结合的方法,确认ASTM 413075K调质钢自动氩弧焊堆焊Inconel 625的工艺确认,根据API 6A Ed 20th和ASME IX-2010的要求进行评定,此结果可为生产提供一定的指导。%T hrough the combination of theoretical analysis and test ,the procedure of 625 overlay weld on ASTM 4130 75K which was quenched and tempered steel ,by automatic argon tungsten arc welding ,was evaluated according to API 6A Ed 20th and ASME IX-2010 requirements ,and provides guidance for production .

  3. Weldability examination of ASTM A 240 S41500 martensitic stainless steel by thermal cycles simulation testings

    OpenAIRE

    Alberto Velázquez-del Rosario; Armín Mariño-Pérez; Maritza Mariño-Cala

    2015-01-01

    The weldability assets of ASTM A 240 S41500 (ASTM A 240/A 240M) martensitic stainless steel are presented through the study of the effects of single and double thermal weld cycles on mechanical properties and microstructure of base metal (BM) and the artificial heat affected zone (HAZ) created by thermal weld simulations. For single cycles, separate peak temperatures of 1000 ºC/12 s and 1350 ºC/12 s (cooling times: 12 s in both cases) were evaluated, whilst two combinations of peak temperatur...

  4. Combustion Gas Properties I-ASTM Jet a Fuel and Dry Air

    Science.gov (United States)

    Jones, R. E.; Trout, A. M.; Wear, J. D.; Mcbride, B. J.

    1984-01-01

    A series of computations was made to produce the equilibrium temperature and gas composition for ASTM jet A fuel and dry air. The computed tables and figures provide combustion gas property data for pressures from 0.5 to 50 atmospheres and equivalence ratios from 0 to 2.0.

  5. Autogenous shrinkage of Ducorit S5R ASTM C 1698-09 test method

    DEFF Research Database (Denmark)

    Damkilde, Lars

    The report deals with experimental measurement of autogenous shrinkage of Ducorit S5R according to the test method ASTM C 1698-09. This test method measures the bulk strain of a sealed cementitious specimen, at constant temperature and not subjected to external forces, from the time of final...

  6. An evaluation of efforts by nuclear power plants to use ASTM D3803-89

    Energy Technology Data Exchange (ETDEWEB)

    Freeman, W.P.

    1995-02-01

    The number of nuclear power plants are now using ASTM D3803-89, {open_quotes}Standard Test Method for Nuclear-Grade Activated Carbon{close_quotes} for routine surveillance testing of adsorbents. In order to judge the impact of this change, we have gathered radioiodine removal test results from our data base on a system-by-system basis (i.e. control room, technical support center, and spent fuel pool) and compared test results obtained for the same kind of systems using the new and older test methods. Included in this comparison are systems with and without humidity control. Results are discussed from the standpoint of what to expect if a change to testing using ASTM D3803-89 is contemplated, especially regarding test results in light existing acceptance criteria. Additionally, the results are discussed from the standpoint of the sensitivity of the ASTM test method to detect when the performance of the carbon in air cleaning systems has been compromised (compared to the older methods). Finally, we offer some suggestions for how other plants might upgrade their carbon testing to incorporate testing to ASTM D3803-89.

  7. Standard specification for zirconium and zirconium alloy sheet, strip, and plate for nuclear application. ASTM standard

    International Nuclear Information System (INIS)

    This specification is under the jurisdiction of ASTM Committee B-10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of Subcommittee B10.02 on Zirconium and Hafnium. Current edition approved Oct. 10, 1997. Published April 1998. Originally published as B 352-60T. Last previous edition B 352-92

  8. Standard specification for castings, zirconium-base, corrosion resistant, for general application. ASTM standard

    International Nuclear Information System (INIS)

    This specification is under the jurisdiction of ASTM Committee B-10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of Subcommittee B10.05 on Castings. Current edition approved Oct. 10, 1997 and published February 1998. Originally published as B 752-85. Last previous edition was B 752-91(1995)

  9. Standard specification for tantalum and tantalum alloy rod and wire. ASTM standard

    International Nuclear Information System (INIS)

    This specification is under the jurisdiction of ASTM Committee B-10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of Subcommittee B10.03 on Niobium and Tantalum. Current edition approved Apr. 10, 1998 and published October 1998. Originally published as B 365-61T. Last previous edition was B 365-92

  10. Standard specification for tantalum and tantalum alloy plate, sheet, and strip. ASTM standard

    International Nuclear Information System (INIS)

    This specification is under the jurisdiction of ASTM Committee B-10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of Subcommittee B10.03 on Niobium and Tantalum. Current edition approved May 10, 1998 and published September 1998. Originally published as B 708-82. Last previous edition was B 708-92

  11. Standard specification for zirconium and zirconium alloy strip, sheet, and plate. ASTM standard

    International Nuclear Information System (INIS)

    This specification is under the jurisdiction of ASTM Committee B-10 on Reactive and Refractory Metals and is the direct responsibility of Subcommittee B10.02 on Zirconium and Hafnium. Current edition approved Apr. 10, 1997. Published May 1998. Originally published as B 551-71. Last previous edition B 551-92

  12. Comparative field permeability measurement of permeable pavements using ASTM C1701 and NCAT permeameter methods.

    Science.gov (United States)

    Li, Hui; Kayhanian, Masoud; Harvey, John T

    2013-03-30

    Fully permeable pavement is gradually gaining support as an alternative best management practice (BMP) for stormwater runoff management. As the use of these pavements increases, a definitive test method is needed to measure hydraulic performance and to evaluate clogging, both for performance studies and for assessment of permeability for construction quality assurance and maintenance needs assessment. Two of the most commonly used permeability measurement tests for porous asphalt and pervious concrete are the National Center for Asphalt Technology (NCAT) permeameter and ASTM C1701, respectively. This study was undertaken to compare measured values for both methods in the field on a variety of permeable pavements used in current practice. The field measurements were performed using six experimental section designs with different permeable pavement surface types including pervious concrete, porous asphalt and permeable interlocking concrete pavers. Multiple measurements were performed at five locations on each pavement test section. The results showed that: (i) silicone gel is a superior sealing material to prevent water leakage compared with conventional plumbing putty; (ii) both methods (NCAT and ASTM) can effectively be used to measure the permeability of all pavement types and the surface material type will not impact the measurement precision; (iii) the permeability values measured with the ASTM method were 50-90% (75% on average) lower than those measured with the NCAT method; (iv) the larger permeameter cylinder diameter used in the ASTM method improved the reliability and reduced the variability of the measured permeability. PMID:23434738

  13. 77 FR 50113 - ASTM International-Food and Drug Administration Workshop on Absorbable Medical Devices: Lessons...

    Science.gov (United States)

    2012-08-20

    ... Absorbable Medical Devices: Lessons Learned From Correlations of Bench Testing and Clinical Performance... Bench Testing and Clinical Performance.'' FDA is co-sponsoring the workshop together with ASTM... establishing correlations between in vitro and in vivo degradation of absorbable implant devices, and...

  14. Standard specification for tantalum and tantalum alloy seamless and welded tubes. ASTM standard

    International Nuclear Information System (INIS)

    This specification is under the jurisdiction of ASTM Committee B-10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of Subcommittee B10.03 on Niobium and Tantalum. Current edition approved Apr. 10, 1998 and published September 1998. Originally published as B 521-70. Last previous edition was B 521-92

  15. Simulations of Viscous Flow Fields of ASTM Assembly and the Effective Average Velocities of Flow Tubes

    Institute of Scientific and Technical Information of China (English)

    LIU Yang; ZHANG Wei-min; CHEN Nai-lu; WANG Ming-hua; LI Lin-lin; Yuan Jian

    2004-01-01

    With the finite element analysis of viscous quenchant flow fields of the ASTM assembly, the effective average velocities of flow tubes are introduced in this paper. And through the results of experiments, the influences of quenchant velocities upon the whole cooling processes are discussed.

  16. Reactor pressure vessel steels ASTM A533B and A508 Cl.2

    International Nuclear Information System (INIS)

    This report presents the tensile test results of steels ASTM A533B and A508 Cl.2 obtained in connection with a programme initiated to gather and create information needed for the assessment of the structural integrity of the reactor pressure vessels. The tensile properties were studied between -196 and 300 degC varying austenitizing and tempering temperatures and having two different carbon contents for the heats of A533B. (author)

  17. Proposed annex to the ASTM Standard Guide E1676-95, bioaccumulation testing utilizing Eisenia foetida

    Energy Technology Data Exchange (ETDEWEB)

    Roper, J. [ASCI Corp., Vicksburg, MS (United States); Simmers, J.; Lee, C.; Tatem, H. [USACE Waterways Experiment Station, Vicksburg, MS (United States)

    1995-12-31

    A detailed description of the method developed at the Waterways Experiment Station (WES) to determine sediment toxicity utilizing the earthworm, Eisenia foetida. This method has been used successfully in evaluating the target contaminants; metals, PAHs, and PCBs. This procedure is currently a proposed annex to the ASTM Standard Guide E1676-95: Conducting a Laboratory Soil Toxicity Test With The Lumbricid Earthworm, Eisenia foetida.

  18. The role of ASTM standards in nuclear power plant life extension

    International Nuclear Information System (INIS)

    The American Society for Testing and Materials (ASTM) has operated since 1898 as a voluntary consensus standard development organization and today has 139 main technical subcommittees. Committees E10 and C26 are responsible for nuclear-related standards. The assessment and management of degradation processes are key factors in determining the fitness of power plant components for continued service. The original materials of construction, their associated acceptance testing and continued surveillance and inspection are largely covered by ASTM standards. Many of these standards are incorporated into the ASME Boiler and Pressure Vessel Code and the Code of Federal Regulations. Approximately 450 of the 8500 existing ASTM standards have some relevance to the issue of plant life extension. This estimate includes those standards pertaining to testing, inspection, analysis, surveillance and monitoring for the purpose of condition assessment, but excludes those specifying the form and composition of actual construction materials. The aging degradation mechanisms of principal concern for metallic and polymeric materials are irradiation- induced embrittlement, thermal aging, fatigue, corrosion and wear. The effects of irradiation, temperature, freeze-thaw cycles and chemical attack have been considered for concrete

  19. Manufacturing history and mechanical properties for ASTM A-533 Type-B Class-1 steel plate (ISES 7802)

    International Nuclear Information System (INIS)

    ASTM A533 Type B Class 1 steel plate for the International Atomic Energy Agency, was manufactured at Nippon Steel Corporation, Nagoya Works. This report has been written to specify the manufacturing history and mechanical properties of the plate

  20. The temperature dependence and environmental enhancement mechanism of fatigue crack growth rates of A 351-CF8A cast stainless steel in LWR environment

    International Nuclear Information System (INIS)

    The fatigue crack growth rates for A 351-CF8A cast stainless steel were determined over a range of temperatures from 93 degC to 338 degC (200 degF to 640 degF). The waveform was 17 mHz sinusoidal and the load ratio was 0.2. The environment was borated and lithiated water with a dissolved oxygen content of approximately 1 ppb. The results show an easily measurable (factors of 2 to 8) increase in crack growth rates due to the environment. However, these rates are well within the known band of results for low-alloy pressure vessel and low-carbon piping steels in LWR environments. An extensive fractographic investigation shows fatigue fracture surfaces consisting of brittle morphology. This fracture morphology is similar to that of stress corrosion cracking of stainless steels, suggesting that there is a distinctive environmental assistance mechanism resulting in the increased crack growth rates. (author)

  1. Impact of ASTM Standard E722 update on radiation damage metrics.

    Energy Technology Data Exchange (ETDEWEB)

    DePriest, Kendall Russell

    2014-06-01

    The impact of recent changes to the ASTM Standard E722 is investigated. The methodological changes in the production of the displacement kerma factors for silicon has significant impact for some energy regions of the 1-MeV(Si) equivalent fluence response function. When evaluating the integral over all neutrons energies in various spectra important to the SNL electronics testing community, the change in the response results in an increase in the total 1-MeV(Si) equivalent fluence of 2 7%. Response functions have been produced and are available for users of both the NuGET and MCNP codes.

  2. Mechanical behaviour of Astm A 297 grade Hp joints welded using different processes

    International Nuclear Information System (INIS)

    The influence of different arc welding processes on mechanical behaviour was studied for cast heat resistant stainless steel welded joints, in the as welded conditions. ASTM A 297 grade HP with niobium and niobium/titanium additions were welded following three different welding procedures, using shielded metal arc welding gas tungsten arc welding and plasma arc welding, in six welded joints. The welded joint mechanical behaviour was evaluated by ambient temperature and 870 deg C tensile tests; and creep tests at 900 deg C and 50 MPa. Mechanical test results showed that the welding procedure qualification following welding codes is not suitable for high temperature service applications. (author)

  3. ASTM STANDARD GUIDE FOR EVALUATING DISPOSAL OPTIONS FOR REUSE OF CONCRETE FROM NUCLEAR FACILITY DECOMMISSIONING

    International Nuclear Information System (INIS)

    Within the nuclear industry, many contaminated facilities that require decommissioning contain huge volumes of concrete. This concrete is generally disposed of as low-level waste at a high cost. Much of the concrete is lightly contaminated and could be reused as roadbed, fill material, or aggregate for new concrete, thus saving millions of dollars. However, because of the possibility of volumetric contamination and the lack of a method to evaluate the risks and costs of reusing concrete, reuse is rarely considered. To address this problem, Argonne National Laboratory-East (ANL-E) and the Idaho National Engineering and Environmental Laboratory teamed to write a ''concrete protocol'' to help evaluate the ramifications of reusing concrete within the U.S. Department of Energy (DOE). This document, titled the Protocol for Development of Authorized Release Limits for Concrete at U.S. Department of Energy Site (1) is based on ANL-E's previously developed scrap metal recycle protocols; on the 10-step method outlined in DOE's draft handbook, Controlling Release for Reuse or Recycle of Property Containing Residual Radioactive Material (2); and on DOE Order 4500.5, Radiation Protection of the Public and the Environment (3). The DOE concrete protocol was the basis for the ASTM Standard Guide for Evaluating Disposal Options for Concrete from Nuclear Facility Decommissioning, which was written to make the information available to a wider audience outside DOE. The resulting ASTM Standard Guide is a more concise version that can be used by the nuclear industry worldwide to evaluate the risks and costs of reusing concrete from nuclear facility decommissioning. The bulk of the ASTM Standard Guide focuses on evaluating the dose and cost for each disposal option. The user calculates these from the detailed formulas and tabulated data provided, then compares the dose and cost for each disposal option to select the best option that meets regulatory requirements. With this information

  4. Weldability examination of ASTM A 240 S41500 martensitic stainless steel by thermal cycles simulation testings

    Directory of Open Access Journals (Sweden)

    Alberto Velázquez-del Rosario

    2015-07-01

    Full Text Available The weldability assets of ASTM A 240 S41500 (ASTM A 240/A 240M martensitic stainless steel are presented through the study of the effects of single and double thermal weld cycles on mechanical properties and microstructure of base metal (BM and the artificial heat affected zone (HAZ created by thermal weld simulations. For single cycles, separate peak temperatures of 1000 ºC/12 s and 1350 ºC/12 s (cooling times: 12 s in both cases were evaluated, whilst two combinations of peak temperatures: (1350 ºC/5 s + 1000 ºC/5 s ºC and (1350 ºC/12 s + 1000 ºC/12 s ºC (cooling times: 5 s and 12 s, were applied for double cycles. Post weld heat treatment (PWHT with short and long holding times were applied and Vickers hardness, impact toughness and metallographic examinations were used in order to assess mechanical and metallographic properties in the as-simulated (no heat treated and postweld heat treated conditions. Best properties of the welded joint for double thermal weld cycles with long holding times were reached, which reveals the good weldability and applicability of the tested material in post weld heat treated conditions.

  5. Corrosion resistance and microstructure of alloy 625 weld overlay on ASTM A516 grade 70

    International Nuclear Information System (INIS)

    Nickel-based alloys are a crucial class of materials because of their excellent corrosion resistance. In the present study, single layer and two layers alloy 625 weld overlays were deposited by GTAW process on A516 grade 70 carbon steel. The dilution in terms of Fe, Ni, Mo and Nb content was calculated in 30 points of weld overlay. Microstructure observations showed that alloy 625 had austenitic structure with two types of Laves and NbC secondary phases. The uniform and pitting corrosion resistance of alloy 625 weld overlay as casted and as forged were evaluated in accordance with ASTM G48-2011 standard at different temperatures to determine the weight loss and critical pitting temperature. For achieving a better comparison, samples from alloy 625 as casted and as forged were tested under the same conditions. The results point out that single layer alloy 625 weld overlay is not suitable for chloride containing environments, two layers alloy 625 weld overlay and alloy 625 as casted have acceptable corrosion resistance and almost the same critical pitting temperature. Alloy 625 as forged has the best corrosion resistance and the highest critical pitting temperature among all test specimens. Also, the corrosion behavior was evaluated in accordance with ASTM G28 standard. The corrosion rate of single layer weld overlay was unacceptable. The average corrosion rate of two layers weld overlay and in casted condition were 35.82 and 33.01 mpy, respectively.

  6. Constitutive Model of ASTM A992 Steel at Elevated Temperature for Application in Nuclear Power Plants

    International Nuclear Information System (INIS)

    ASTM A992 is the most common grade of high strength steel used for building structures in the U. S. and considered to be applied in Korean nuclear power plant in an immediate future. This paper provides two constitutive models for high strength steel of ASTM A992 steel at elevated temperature to use in steel structures or steel building subjected to fire loads and thermal loads. One is the detailed full constitutive model and it has good agreements for every temperatures from room temperature to 1,000 .deg. C with increments of 100 .deg. C because it was developed using a best-fitting approach method with separated special zones; elastic, plastic plateau, strain-hardening and strain-softening regions. The curve-fitting results were helpful to derive the constitutive models of the stress-strain curves at room and elevated temperatures. The first of these models was developed for academia, and very closely fit the observed test data throughout the strain-hardening and softening zones. The second model was developed as a design model. Despite its simplicity (assumed bilinear stress-strain behavior), it captures the observed stress-strain behavior better than the Eurocode 3-1-2 provisions, most notably in terms of its predicted strain softening behavior and ultimate strains

  7. Cavitation erosion - corrosion behaviour of ASTM A27 runner steel in natural river water

    International Nuclear Information System (INIS)

    Cavitation erosion is still one of the most important degradation modes in hydraulic turbine runners. Part of researches in this field focuses on finding new materials, coatings and surface treatments to improve the resistance properties of runners to this phenomenon. However, only few studies are focused on the deleterious effect of the environment. Actually, in some cases a synergistic effect between cavitation erosion mechanisms and corrosion kinetics can establish and increase erosion rate. In the present study, the cavitation erosion-corrosion behaviour of ASTM A27 steel in natural river water is investigated. This paper state the approach which has been used to enlighten the synergy between both phenomena. For this, a 20 kHz vibratory test according ASTM G32 standard is coupled to an electrochemical cell to be able to follow the different corrosion parameters during the tests to get evidence of the damaging mechanism. Moreover, mass losses have been followed during the exposure time. The classical degradation parameters (cumulative weight loss and erosion rate) are determined. Furthermore, a particular effort has been implemented to determine the evolution of surface damages in terms of pitting, surface cracking, material removal and surface corrosion. For this, scanning electron microscopy has been used to link the microstructure to the material removal mechanisms

  8. Improved ASTM G72 Test Method for Ensuring Adequate Fuel-to-Oxidizer Ratios

    Science.gov (United States)

    Juarez, Alfredo; Harper, Susana Tapia

    2016-01-01

    The ASTM G72/G72M-15 Standard Test Method for Autogenous Ignition Temperature of Liquids and Solids in a High-Pressure Oxygen-Enriched Environment is currently used to evaluate materials for the ignition susceptibility driven by exposure to external heat in an enriched oxygen environment. Testing performed on highly volatile liquids such as cleaning solvents has proven problematic due to inconsistent test results (non-ignitions). Non-ignition results can be misinterpreted as favorable oxygen compatibility, although they are more likely associated with inadequate fuel-to-oxidizer ratios. Forced evaporation during purging and inadequate sample size were identified as two potential causes for inadequate available sample material during testing. In an effort to maintain adequate fuel-to-oxidizer ratios within the reaction vessel during test, several parameters were considered, including sample size, pretest sample chilling, pretest purging, and test pressure. Tests on a variety of solvents exhibiting a range of volatilities are presented in this paper. A proposed improvement to the standard test protocol as a result of this evaluation is also presented. Execution of the final proposed improved test protocol outlines an incremental step method of determining optimal conditions using increased sample sizes while considering test system safety limits. The proposed improved test method increases confidence in results obtained by utilizing the ASTM G72 autogenous ignition temperature test method and can aid in the oxygen compatibility assessment of highly volatile liquids and other conditions that may lead to false non-ignition results.

  9. White Paper Summary of 2nd ASTM International Workshop on Hydrides in Zirconium Alloy Cladding

    Energy Technology Data Exchange (ETDEWEB)

    Sindelar, R. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Louthan, M. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); PNNL, B. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2015-05-29

    This white paper recommends that ASTM International develop standards to address the potential impact of hydrides on the long term performance of irradiated zirconium alloys. The need for such standards was apparent during the 2nd ASTM International Workshop on Hydrides in Zirconium Alloy Cladding and Assembly Components, sponsored by ASTM International Committee C26.13 and held on June 10-12, 2014, in Jackson, Wyoming. The potentially adverse impacts of hydrogen and hydrides on the long term performance of irradiated zirconium-alloy cladding on used fuel were shown to depend on multiple factors such as alloy chemistry and processing, irradiation and post irradiation history, residual and applied stresses and stress states, and the service environment. These factors determine the hydrogen content and hydride morphology in the alloy, which, in turn, influence the response of the alloy to the thermo-mechanical conditions imposed (and anticipated) during storage, transport and disposal of used nuclear fuel. Workshop presentations and discussions showed that although hydrogen/hydride induced degradation of zirconium alloys may be of concern, the potential for occurrence and the extent of anticipated degradation vary throughout the nuclear industry because of the variations in hydrogen content, hydride morphology, alloy chemistry and irradiation conditions. The tools and techniques used to characterize hydrides and hydride morphologies and their impacts on material performance also vary. Such variations make site-to-site comparisons of test results and observations difficult. There is no consensus that a single material or system characteristic (e.g., reactor type, burnup, hydrogen content, end-of life stress, alloy type, drying temperature, etc.) is an effective predictor of material response during long term storage or of performance after long term storage. Multi-variable correlations made for one alloy may not represent the behavior of another alloy exposed to

  10. Microstructure and embrittlement of the fine-grained heat-affected zone of ASTM4130 steel

    Science.gov (United States)

    Li, Li-Ying; Wang, Yong; Han, Tao; Li, Chao-Wen

    2011-08-01

    The mechanical properties and microstructure features of the fine-grained heat-affected zone (FGHAZ) of ASTM4130 steel was investigated by optical microscope (OM), scanning electron microscope (SEM), transmission electron microscope (TEM), and welding thermal simulation test. It is found that serious embrittlement occurs in the FGHAZ with an 81.37% decrease of toughness, compared with that of the base metal. Microstructure analysis reveals that the FGHAZ is mainly composed of acicular, equiaxed ferrite, granular ferrite, martensite, and martensite-austenite (M-A) constituent. The FGHAZ embrittlement is mainly induced by granular ferrite because of carbides located at its boundaries and sub-boundaries. Meanwhile, the existence of martensite and M-A constituent, which distribute in a discontinuous network, is also detrimental to the mechanical properties.

  11. Effect of mold preheating on the microstructure of the investment cast ASTM F-75 implant alloy

    International Nuclear Information System (INIS)

    The ASTM F-75 (Co-28%Cr-6%Mo) is widely used as a biocompatible alloy in medicine for manufacturing implants. In this study, effect of mold preheating on the as-cast microstructure of the alloy was investigated using the solid investment casting process. Several mold preheating temperatures of 550, 700, 850 and 1000 degreeC were selected at the same melt superheat. The samples were characterized by optical microscopy, electron microscopy and macro-hardness test. The results showed that the size of grains and secondary carbides of the matrix was increased by increasing the mold preheating temperature. In addition, morphology of the M23C6 carbides was changed from the eutectic carbides precipitated in grain boundaries to the blocky shape precipitated in both carbide interface and dendritic matrix. The appropriate microstructure with nearly fine grains with homogeneous distribution of secondary phases was obtained at mold preheating temperature of about 850 degreeC.

  12. Thermal testing of type B packages in furnaces per ASTM standard practice E 2230

    International Nuclear Information System (INIS)

    ASTM E2230, Standard Practice for Thermal Qualification of Type B Packages for Radioactive Material was written to provide guidance when using any of four different methods for performing the HAC thermal test outlined in 10 CFR 71.73 (c)(4). The guidance provided in the Standard Practice has been used to successfully test four different drum-type packaging designs (ES-2100, DPP-2, MD-1 and ES-3100). There are many considerations that must be dealt with when performing these tests which are a direct result of the wording of 10 CFR 71 HAC thermal test regulations. The Standard Practice offers guidance that helps to deal with each of these considerations in a manner which meets current regulatory requirements

  13. Properties of oxygen free copper (ASTM-F68-Class 1) for particle accelerators

    International Nuclear Information System (INIS)

    In vacuum, materials like stainless steel, aluminum and copper desorb gas molecules. Oxygen free copper (OFC) is widely used for a material of vacuum components. Some components especially for a particle accelerator like electron tubes, waveguides, accelerator cavities have been troubled with rapid pressure rise, discharge breakdown and other vacuum related accidents caused by the enhanced gas desorption in a 'hot' vacuum. Vacuum degassing process applied to a continuous casting plant successfully reduces the content of gases such as hydrogen and oxygen. It is confirmed that the vacuum degassed OFC shows almost no porosity in itself, and thus satisfies ASTM (American Society for Testing and Materials)-F68 specification of Class 1, the highest grade OFC for electron devices. This material also shows less gas desorption yield in some measurements that simulate a dynamic gas desorption likely occurred in accelerators, and higher breakdown field than ordinary OFC. Therefore, OFC-Class 1 is the best copper material for the particle accelerator. (author)

  14. Vanadium Attack with Sigma Phase Occurrence in Fe-CrNi Alloy (ASTM A447)

    International Nuclear Information System (INIS)

    The vanadium attack of sigma phase occurrence in high chromium-nickel steel (ASTM A447) has been studied in fuel oil combustion environment. 80mole% V2O5-20mole% Na2SO4 was used as corrosive synthetic ash. Using metallograph and scanning electron microscope, various changes of microstructure of the specimen were observed in the corrosion process. The vanadium attack was affected by carbide rather than sigma phase in initial period of the test, but in the later period, sigma phase occurrence was more related for the attack. Vanadium attack seemed to be propagated along the boundary of matrix and sigma phase. Finally, sigma phase itself might be flaked out from grain boundary. However, stress corrosion cracking might be propagated through sigma phase which is brittle

  15. Corrosion resistance and microstructure of alloy 625 weld overlay on ASTM A516 grade 70

    Energy Technology Data Exchange (ETDEWEB)

    Moradi, Mohammad J. [Amirkabir Univ. of Technology, Tehran (Iran, Islamic Republic of). Petroleum Engineering Dept.; Ketabchi, Mostafa [Amirkabir Univ. of Technology, Tehran (Iran, Islamic Republic of). Mining and Metallurgical Engineering Dept.

    2016-02-01

    Nickel-based alloys are a crucial class of materials because of their excellent corrosion resistance. In the present study, single layer and two layers alloy 625 weld overlays were deposited by GTAW process on A516 grade 70 carbon steel. The dilution in terms of Fe, Ni, Mo and Nb content was calculated in 30 points of weld overlay. Microstructure observations showed that alloy 625 had austenitic structure with two types of Laves and NbC secondary phases. The uniform and pitting corrosion resistance of alloy 625 weld overlay as casted and as forged were evaluated in accordance with ASTM G48-2011 standard at different temperatures to determine the weight loss and critical pitting temperature. For achieving a better comparison, samples from alloy 625 as casted and as forged were tested under the same conditions. The results point out that single layer alloy 625 weld overlay is not suitable for chloride containing environments, two layers alloy 625 weld overlay and alloy 625 as casted have acceptable corrosion resistance and almost the same critical pitting temperature. Alloy 625 as forged has the best corrosion resistance and the highest critical pitting temperature among all test specimens. Also, the corrosion behavior was evaluated in accordance with ASTM G28 standard. The corrosion rate of single layer weld overlay was unacceptable. The average corrosion rate of two layers weld overlay and in casted condition were 35.82 and 33.01 mpy, respectively. [German] Nickellegierungen sind aufgrund ihres exzellenten Korrosionswiderstandes eine bedeutende Werkstoffklasse. In der diesem Beitrag zugrunde liegenden Studie wurden mittels WIG-Schweissens ein- und zweilagige Schweissplattierungen auf den Kohlenstoffstahl A516 (Grade 70) aufgebracht. Die Vermischung in Form des Fe-, Ni-, Mo- und Nb-Gehaltes wurde an 30 Punkten der Schweissplattierungen berechnet. Die mikrostrukturellen Untersuchungen ergaben, dass die Legierung 625 eine austenitische Struktur mit zwei Arten von

  16. Determination of CTODC in Fibre Metal Laminates by ASTM and Schwalbe Methods

    Directory of Open Access Journals (Sweden)

    Castrodeza E.M.

    2002-01-01

    Full Text Available Fibre Metal Laminates (FMLs have arisen as a demand of the aeronautical industry to use thin sheets with high resistance to fatigue crack growth, high damage tolerance, corrosion resistance and high specific strength. Considering these requirements, FMLs are an advantageous choice when compared to metal alloys currently used. In order to employ FMLs in aircraft structures, designers must hold a deep knowledge of a wide set of their properties including fracture toughness. The aim of this work was to evaluate the available methodologies to measure fracture toughness at instability (CTOD C in unidirectional fibre metal laminates reinforced with aramid fibres (ARALL®. To achieve this, tests were performed to obtain traditional and Schwalbe CTODs by using experimental ASTM based techniques, especially adapted to these laminates. Results achieved point out that Schwalbe method is more appropriate and also that there are differences between both CTOD parameters.

  17. Residual stresses in laser welded ASTM A387 Grade 91 steel plates

    Energy Technology Data Exchange (ETDEWEB)

    Kumar, Santosh, E-mail: santosh@barc.gov.in [Bhabha Atomic Research Centre, Mumbai, Maharashtra 400094 (India); Kundu, A. [Materials Engineering, The Open University, Milton Keynes, MK7 6AA (United Kingdom); Venkata, K.A. [Department of Mechanical Engineering, University of Bristol, Bristol, BS8 1TR (United Kingdom); Evans, A. [Institut Laue Langevin, Grenoble (France); Truman, C.E. [Department of Mechanical Engineering, University of Bristol, Bristol, BS8 1TR (United Kingdom); Francis, J.A. [University of Manchester, Manchester, M13 9PL (United Kingdom); Bhanumurthy, K. [Bhabha Atomic Research Centre, Mumbai, Maharashtra 400094 (India); Bouchard, P.J. [Materials Engineering, The Open University, Milton Keynes, MK7 6AA (United Kingdom); Dey, G.K. [Bhabha Atomic Research Centre, Mumbai, Maharashtra 400094 (India)

    2013-07-15

    Residual stresses in 9 mm thick ASTM A387 Grade 91 steel plates, joined using constant power (8 kW) low and high heat input laser welding processes, are characterised using neutron diffraction. The measured longitudinal and normal components of residual stress show a bimodal distribution across the welded joint with a low tensile or compressive trough at the weld centre flanked by high magnitude tensile peaks in parent metal adjacent to the heat affected zone boundaries. The width of the central trough and spread of the outboard tensile zones are significantly greater for the high heat input weld. In both cases, the stress distributions can be explained by the strains associated with the austenite to martensite solid-state transformation as the joint cools after welding.

  18. Microstructure evolution of ASTM 335 P91 steel, subjected to continuous cooling

    International Nuclear Information System (INIS)

    This paper studies the influence of the cooling rate on an isothermal phase transformations in ASTM A335 P91 steel, by the analysis of the resulting microstructure after several continuous cooling cycles under fixed austenization conditions. The CCT (Continuous Cooling Transformation) diagram of this material has already been reported in the literature, so the main phase fields are known, and they depend on the austenitic grain size and the cooling rate. Five samples were tested in a dilatometer, they were austenized and then cooled at different rates between 50oC/h and 300oC/h. The identification and characterization of the resulting phases was carried out by using Scanning Electron Microscopy, X-ray Diffraction and Mossbauer Spectroscopy. The obtained results allowed to add information about the presence of retained austenite and (Fe,Cr)3C - type carbides to the CCT diagram of the material (author)

  19. Comparisons of ASTM standards cited in the NRC standard review plan, NUREG-0800 and related documents

    International Nuclear Information System (INIS)

    This report provides the results of comparisons of the cited and latest versions of ASTM standards cited in the NRC Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants (NUREG 0800) and related documents. The comparisons were performed by Battelle Pacific Northwest Laboratories in support of the NRC's Standard Review Plan Update and Development Program. Significant changes to the standards, from the cited version to the latest version, are described and discussed in a tabular format for each standard. Recommendations for updating each citation in the Standard Review Plan are presented. Technical considerations and suggested changes are included for related regulatory documents (i.e., Regulatory Guides and the Code of Federal Regulations) citing the standard. The results and recommendations presented in this document have not been subjected to NRC staff review

  20. Determination of ASTM 1016 structural welded joints fracture toughness through J integral

    International Nuclear Information System (INIS)

    Fracture toughness is an important parameter for studies of materials behavior in nuclear and conventional industry. Crack propagation resistance is, in general, evaluate using one of the fracture mechanics parameters KIC, for the case of the materials that exhibits a linear elastic behavior, the CTOD (crack tip opening displacement) and JIC, the critical value of J Integral, for the case of materials with elastic-plastic behavior. On this work the fracture mechanics parameters of the ASTM 1016 structural steel welded joints were obtained, using the J Integral. Charpy V tests at several temperatures were also obtained, with the purpose to obtain the curves of ductile-brittle of the regions of the welded joints: Base Metal, (MB), and Melted Zone (MZ). The joints were welded by Gas Metal Arc Welding (GMAW) with V bevel for evaluation the MZ toughness properties. The tests were accomplished at temperatures varying from -100 deg C to 100 deg C using the technical of compliance variation for JIC determination, the critical value that defines the initial stable crack growth, that applies to brittle and ductile materials. The J Integral alternative specimens has square cross section 10mmX10mm, according ASTM E 1820, with notch localized respectively at the BM and MZ. After the tests, the specimens fractured were analyzed in a scanning microscopic electronic (SME) for verification of the fracture surface. The fractography of the specimens at elevated temperatures presented dimples at the region of stable crack growth, characteristic of ductile fracture. The results of J Integral and Charpy V presented a good correlation between these two parameters. From these correlations it can be concluded that in some applications, the use Charpy V energy to infer fracture toughness can be substitute the Integral J tests. (author)

  1. Application of probability distribution functions in the ASTM RBCA framework for use in California

    International Nuclear Information System (INIS)

    Currently, Environmental Protection Agency (EPA, 1989b) and other conventional methodologies of risk assessment, such as the American Society for Testing and Materials--risk-based corrective action (ASTM/RBCA) format, make use of deterministic, or point numbers in making estimates of risk. The goal of risk assessment is to provide a systematic tool to evaluate hazards and exposures to assist in the management of society's activities. To properly do this, there must be an attempt by the regulator or the responsible party to use information as effectively as possible. The use of historical data and probability distribution functions is a suggested initial approach to dealing with LUFT sites in California, taking into account geophysical, societal, and health based parameters particular to the State. These parameters may be based on results of the CalLUFT HCA, from California Census information, or from other sources, where appropriate. Because of the limitations involved with the use of point sources in the ASTM/RBCA format, probability distribution functions can be used to give regulatory personnel and risk managers more understanding of the actual range of risks involved. Such information will allow the risk manager a higher comfort level in dealing with risks, and will, by detailing the residual risks involved, allow for the potential consequences of decisions to be better known. The above methodology effectively allows the risk manager to choose a level of health risk appropriate for the site, allows for a general prioritizing in regards to other sites, and removes some of the restrictions in applying remedial action necessitated by MCLs or deterministic risk estimates

  2. 77 FR 2456 - Incorporation of Revised ASTM Standards That Provide Flexibility in the Use of Alternatives to...

    Science.gov (United States)

    2012-01-18

    ... the use of mercury alternatives, EPA encourages ASTM, in the spirit of pollution prevention, to... Standards That Provide Flexibility in the Use of Alternatives to Mercury-Containing Industrial Thermometers... regulations that provide flexibility to use alternatives to mercury- containing industrial thermometers....

  3. 76 FR 2056 - Incorporation of Revised ASTM Standards That Provide Flexibility in the Use of Alternatives to...

    Science.gov (United States)

    2011-01-12

    ... products to help prevent unnecessary human and environmental exposures to elemental mercury. EPA is... ASTM Standards That Provide Flexibility in the Use of Alternatives to Mercury-Containing Thermometers; Solicitation of Public Comment on the Required Use of Mercury- Containing Thermometers in EPA...

  4. Heat treatment temperature influence on ASTM A890 GR 6A super duplex stainless steel microstructure

    International Nuclear Information System (INIS)

    Duplex and super duplex stainless steels are ferrous alloys with up to 26% chromium, 8% nickel, 5% molybdenum and 0.3% nitrogen, which are largely used in applications in media containing ions from the halogen family, mainly the chloride ion (Cl-). The emergence of this material aimed at substituting Copper-Nickel alloys (Cupro-Nickel) that despite presenting good corrosion resistance, has mechanical properties quite inferior to steel properties. The metallurgy of duplex and super duplex stainless steel is complex due to high sensitiveness to sigma phase precipitation that becomes apparent, due to the temperatures they are exposed on cooling from solidification as well as from heat treatment processes. The objective of this study was to verify the influence of heat treating temperatures on the microstructure and hardness of ASTM A890/A890M Gr 6A super duplex stainless steel type. Microstructure control is of extreme importance for castings, as the chemical composition and cooling during solidification inevitably provide conditions for precipitation of sigma phase. Higher hardness in these materials is directly associated to high sigma phase concentration in the microstructure, precipitated in the ferrite/austenite interface. While heat treatment temperature during solution treatment increases, the sigma phase content in the microstructure decreases and consequently, the material hardness diminishes. When the sigma phase was completely dissolved by the heat treatment, the material hardness was influenced only due to ferrite and austenite contents in the microstructure

  5. European experiences of the proposed ASTM test method for crack arrest toughness of ferritic materials

    International Nuclear Information System (INIS)

    The proposed ASTM test method for measuring the crack arrest toughness of ferritic materials using wedge-loaded, side-grooved, compact specimens was applied to three steels: A514 bridge steel, A588 bridge steel, and A533B pressure vessel steel. Five sets of results from different laboratories are discussed here. Notches were prepared by spark erosion, although root radii varied from ∝0.1-1.5 mm. Although fast fractures were successfully initiated, arrest did not occur in a significant number of cases. The results showed no obvious dependence of crack arrest toughness, Ka, (determined by a static analysis) on crack initiation toughness, K0. It was found that Ka decreases markedly with increasing crack jump distance. A limited amount of further work on smaller specimens of the A533B steel showed that lower Ka values tended to be recorded. It is concluded that a number of points relating to the proposed test method and notch preparation are worthy of further consideration. It is pointed out that the proposed validity criteria may screen out lower bound data. Nevertheless, for present practical purposes, Ka values may be regarded as useful in providing an estimate of arrest toughness - although not necessarily a conservative estimate. (orig./HP)

  6. Characterization of laser weld joints in ASTM A387 grade 91 steel

    International Nuclear Information System (INIS)

    Laser welding is a high power - density joining process; well known for its deep penetration, narrow heat affected zone and negligible joint distortion and therefore, it facilitates fabrication of complex structures. ASTM A387 Grade 91 steel is a ferritic/martensitic steel (FMS), which is widely used in super critical thermal power plants as steam generator material. This is also a potential candidate for fast breeder reactor clad material and also forms the basis for development of reduced activation ferritic/martensitic steel (RAFMS), which is an accepted material for fabrication of Test Blanket Material (TBM) for International Thermonuclear Experimental Reactor (ITER). Joining of this material for fabrication of steam generator is routinely done using conventional welding techniques like TIG, SMAW etc. However, there are many limitations associated with conventional welding techniques due to martensitic transformation of this material while cooling, multiple pass requirements, higher heat input, distortion and soft inter-critical microstructure. Besides, there are geometrical constraints associated with conventional welding processes when it comes to fabricate complex structures with limited access to the joint line. Laser welding is a potential solution to overcome most of these limitations; however, not much work has been reported on laser welding of this material. This paper presents detailed analysis and discussion of the microstructural evolution during laser welding and PWHT of the weld joint and also correlates the same with the experimentally measured mechanical properties of the weld joints

  7. Silicon Damage Response Function Derivation and Verification: Assessment of Impact on ASTM Standard E722

    Energy Technology Data Exchange (ETDEWEB)

    Depriest, Kendall [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2016-06-01

    Unsuccessful attempts by members of the radiation effects community to independently derive the Norgett-Robinson-Torrens (NRT) damage energy factors for silicon in ASTM standard E722-14 led to an investigation of the software coding and data that produced those damage energy factors. The ad hoc collaboration to discover the reason for lack of agreement revealed a coding error and resulted in a report documenting the methodology to produce the response function for the standard. The recommended changes in the NRT damage energy factors for silicon are shown to have significant impact for a narrow energy region of the 1-MeV(Si) equivalent fluence response function. However, when evaluating integral metrics over all neutrons energies in various spectra important to the SNL electronics testing community, the change in the response results in a small decrease in the total 1- MeV(Si) equivalent fluence of ~0.6% compared to the E722-14 response. Response functions based on the newly recommended NRT damage energy factors have been produced and are available for users of both the NuGET and MCNP codes.

  8. Repeatability and Reproducibility of Compression Strength Measurements Conducted According to ASTM E9

    Science.gov (United States)

    Luecke, William E.; Ma, Li; Graham, Stephen M.; Adler, Matthew A.

    2010-01-01

    Ten commercial laboratories participated in an interlaboratory study to establish the repeatability and reproducibility of compression strength tests conducted according to ASTM International Standard Test Method E9. The test employed a cylindrical aluminum AA2024-T351 test specimen. Participants measured elastic modulus and 0.2 % offset yield strength, YS(0.2 % offset), using an extensometer attached to the specimen. The repeatability and reproducibility of the yield strength measurement, expressed as coefficient of variations were cv(sub r)= 0.011 and cv(sub R)= 0.020 The reproducibility of the test across the laboratories was among the best that has been reported for uniaxial tests. The reported data indicated that using diametrically opposed extensometers, instead of a single extensometer doubled the precision of the test method. Laboratories that did not lubricate the ends of the specimen measured yield stresses and elastic moduli that were smaller than those measured in laboratories that lubricated the specimen ends. A finite element analysis of the test specimen deformation for frictionless and perfect friction could not explain the discrepancy, however. The modulus measured from stress-strain data were reanalyzed using a technique that finds the optimal fit range, and applies several quality checks to the data. The error in modulus measurements from stress-strain curves generally increased as the fit range decreased to less than 40 % of the stress range.

  9. Tekken testing to determine the preheating temperature on ASTM A514 GR B steel

    International Nuclear Information System (INIS)

    The cold cracking test methods are used to determine the preheating temperature in order to avoid cracking in steel welding.In this work Tekken tests on high strength quenching and tempering (ASTM A514 GrB) structural steel with a thickness of 25 mm have been made.The welds were done using a FCAW process with gas shielding and basic low hydrogen cored wire E 110T5-K4.The welding parameters and joint design applied in this work are similar to the ones used on site production.The base metal, HAZ and weld metal microstructure have been evaluated by optical and SEM microscopy.Thermal cycles records of each welding have been made to relate preheat temperature with the cooling time on the range of 800-500 degC (t8/5) or 800-100degC (t8/1) and the evidence of crack or no crack condition.Finally, a preheat temperature of 150degC and the cooling time larger than 17 s improve a welding integrity without cracks

  10. Processing and properties of superclean ASTM A508 Cl. 4 forgings

    Energy Technology Data Exchange (ETDEWEB)

    Hinkel, A.V.; Handerhan, K.J. [Ellwood City Forge, PA (United States); Manzo, G.J. [Ellwood Group Inc., PA (United States). Steel Division; Simkins, G.P. [Westinghouse Electric Corp., Pittsburgh, PA (United States)

    1988-12-31

    Steels with improved resistance to temper embrittlement are now being produced using ``superclean`` steelmaking technology. This technology involves the use of scrap control, proper electric arc furnace and ladle refining furnace practices to produce steel with very low Mn, Si, P, S and other residual impurities such as Sn, As and Sb. This technology has been applied on a production basis to modified ASTM A508 Cl- 4 material intended for high temperature pressure vessel forgings. Processing and properties of this superclean material are reviewed. In addition, the cleanliness and mechanical properties are compared to conventionally melted A508 Cl. 4 material. The ``superclean`` A508 Cl. 4 mod. was found to meet all specification requirements. In addition, the superclean material was found to possess superior upper shelf CVN properties, a lower FATT{sub 50} and NDTT, along with superior microcleanliness compared to conventional material. Finally, the superclean material was found to be immune to temper embrittlement based on the short-term embrittlement treatments examined.

  11. OPTIMIZACION DE LAS PROPIEDADES DE TRANSPORTE IONICO DEL CONCRETO Y SIMULACION DEL ENSAYO ASTM C1202

    Directory of Open Access Journals (Sweden)

    JUAN LIZARAZO MARRIAGA

    2009-01-01

    Full Text Available En este artículo se presentan los resultados de la simulación computacional del flujo de los principales iones presentes (Cl-, OH-, Na+, y K+ en un ensayo ASTM C1202: "Indicación eléctrica de la resistencia del concreto a la penetración de Iones cloruro". Para la modelación se utilizó un esquema de diferencias finitas definido mediante la ecuación de Nernst - Plank con un campo eléctrico variable, la cual describe los movimientos iónicos en un material poroso saturado. Para lograr esto, los resultados de un nuevo ensayo electroquímico diseñado para medir el potencial de membrana, en compañía de la corriente eléctrica, fueron optimizados para obtener los coeficientes intrínsicos de difusión, la composición inicial de la solución de poros, la capacidad de fijación de cloruros y la porosidad de la mezcla de concreto.

  12. Characterization of ASTM A335 P92 steel in continuous cooling cycles

    International Nuclear Information System (INIS)

    The operating conditions demanded by Generation IV reactors include high temperatures, higher radiation doses and highly corrosive environments. Among the structural materials proposed both for in-core and out-of-core applications, elevated-temperature P91/P92 ferritic/martensitic steels have been considered. This work studies the transformation behavior and microstructural evolution of ASTM A335 P92 steel in continuous cooling cycles (CCT). The material was austenized at 1050 ºC and afterwards cooled down at controlled rates (300, 50 and 15 ºC/h). The determination and characterization of the phases present in the samples was performed by optical microscopy, field emission scanning electron microscopy, Mössbauer spectroscopy and X-ray diffraction. Samples whose cooling rates were on the limits of the studied range (300 and 15 ºC/h) presented completely martensitic and completely ferritic structures, respectively. The sample cooled down at intermediate rate exhibited, though, a mixed structure of martensite and ferrite. Second-phase precipitation has also been observed in all the samples. (author)

  13. Estimation of improved productivity based on materials substitution in high temperature applications. Use of alloy ASTM A-335 P91

    International Nuclear Information System (INIS)

    In ECOPETROL-ICP was carried out an evaluation of the mechanical and micro structural properties of modified 9 Cr-1 Mo alloy, ASTM A-335 Gr. P91, finding higher strength mechanical properties, allowable stresses and creep rupture strength, than the conventional 9 Cr-1 Mo alloy, ASTM A-335 Gr. P9, recommending the alloy P91 as substitute tube material in the radiation zone of the Visbreaking heater of Cartagena's refinery (furnace in revamping process). The results obtained permit a thickness reduction of radiation tubes of material P91 close to 25% and increase the internal volume tube over up 8%, which is a parameter to consider in improving productivity and efficiency process. Also would be obtained a significant savings cost in the material among 5 and 10%. Additionally, expectations of both design and remaining useful life would be seen extensively favored with this change of alloy

  14. High-cycle notch sensitivity of alloy steel ASTM A743 CA6NM used in hydrogenator turbine components

    OpenAIRE

    José Alexander Araújo; Jorge Luiz de Almeida Ferreira; Braitner Lobato da Silva

    2010-01-01

    The presence of notches and other stress concentrations in turbine blades and other notch hydraulic components is a current problem in engineering. It causes a reduction of endurance limit of material. In that sense, specimens of the ASTM A743 CA6NM alloy steel using in several hydrogenator turbine components was tested. The specimens were tested under uniaxial fatigue loading with a load ratio equal to -1, and the considered stress concentration factors, Kt, values, calculated with respect t...

  15. Considerations on the ASTM standards 1789-04 and 1422-05 on the forensic examination of ink.

    Science.gov (United States)

    Neumann, Cedric; Margot, Pierre

    2010-09-01

    The ASTM standards on Writing Ink Identification (ASTM 1789-04) and on Writing Ink Comparison (ASTM 1422-05) are the most up-to-date guidelines that have been published on the forensic analysis of ink. The aim of these documents is to cover most aspects of the forensic analysis of ink evidence, from the analysis of ink samples, the comparison of the analytical profile of these samples (with the aim to differentiate them or not), through to the interpretation of the result of the examination of these samples in a forensic context. Significant evolutions in the technology available to forensic scientists, in the quality assurance requirements brought onto them, and in the understanding of frameworks to interpret forensic evidence have been made in recent years. This article reviews the two standards in the light of these evolutions and proposes some practical improvements in terms of the standardization of the analyses, the comparison of ink samples, and the interpretation of ink examination. Some of these suggestions have already been included in a DHS funded project aimed at creating a digital ink library for the United States Secret Service. PMID:20487143

  16. Low cycle fatigue of steels for nuclear pressure vessels in hot water (ASTM-508 Cl 3)

    International Nuclear Information System (INIS)

    Low cycle fatigue analysis is a very important problem in structural mechanics, especially for nuclear pressure vessels. The design procedure is based on the knowledge of the experimental results on test specimen. The design curves are based on tests in air at room temperature. But the fatigue behavior may be affected by hot water environment when light water reactors are concerned. A general program on low cycle fatigue in hot water is in progress at Saclay in order to assess the conservatism of design fatigue curves. In order to keep control of water chemistry, the test rig is connected with the Primeau loop and therefore a constant flow of water is get through the specimens. Tested samples are small strips of rectangular cross section (2x10x61 mm). They are loaded in circular bending with controlled deflection. Practically they are placed between four supports, two moving and two fixed. The water temperature is kept near 2650C while the oxygen and hydrogen contents and the pH are monitored. A frequency as low as 0.1 cpm has been choosed in order to take into account time effects. Calibration tests in air at room temperature are also made with the same type of device. The steel is the french steel for light water reactor vessels, its specification is roughly according with the specification ASTM 508 (Cl 3), but with special requirements. For these tests results, the best fit curve can be written: epsilon a=5.6Nsup(-0.30) with epsilon a=strain amplitude, N=number of cycles at failure. There is no noticeable difference between hot water test results and air-room temperature results

  17. Sulfide Stress Corrosion Cracking Resistance of Modified ASTM A694 F60 Low Alloy Steel for Subsea Applications

    OpenAIRE

    Stridsklev, Camilla A

    2013-01-01

    The resistance to sulfide stress corrosion cracking (SSC) of modified ASTM A694 F60 low alloy steel, produced by two different manufacturers, was studied by four-point bend-testing. The two materials are named material A and material B in this report. Both materials were tested in two different environments with different severity, one ?sweet-transition region? test and one ?sour service? test. The test conditions were controlled by the H2S partial pressure (pH2S) and pH. These parameters wer...

  18. Effect of crack length and side grooves on the ductile fracture toughness properties of ASTM A533 steel

    International Nuclear Information System (INIS)

    The ductile fracture toughness, J/sub Ic/, and tearing modulus, T, of ASTM A533, Grade B, Class 1 steel were evaluated by the unloading compliance method for determining J-R curves. These properties were measured for a matrix of 1T specimens in which the relative crack length, a/W, and the depth of side grooving were systematically varied to determine their individual effects. In addition, the applicability of an LVDT extensometer system was investigated for use in the unloading compliance method for J-R curve determination

  19. Cor ASTM: um método simples e rápido para determinar a qualidade do biodiesel produzido a partir de óleos residuais de fritura ASTM color: a simple and fast method for determining quality of biodiesel produced from used cooking oils

    Directory of Open Access Journals (Sweden)

    Verônica Santos de Morais

    2013-01-01

    Full Text Available In this study, 23 biodiesel samples were produced, 20 from used cooking oil and the remaining 3 from refined soybean oil. The following properties were determined in all of the samples (oil and its respective biodiesel: density; viscosity; total acid number and ASTM color. The results indicated high correlation (R > 0.6 between ASTM color of used cooking oil and total acid number of its resultant biodiesel. This high correlation allows prediction of the quality of the biodiesel produced using a simple and fast procedure such as ASTM color.

  20. Microestructura de una unión disímil AISI 321 y una aleación A 351 grado HK-40 obtenida mediante soldadura manual por arco eléctrico

    Directory of Open Access Journals (Sweden)

    Reilis Fuentes-Guilarte

    2016-05-01

    Full Text Available El objetivo fue establecer el comportamiento microestructural de una unión disímil de acero inoxidable austenítico AISI 321 y de la aleación A 351 grado HK 40 obtenida por fundición mediante soldadura manual por arco eléctrico y electrodos revestidos del tipo E 309 L-16. La estructura ferrita–austeníta que se forma en la unión del acero con la aleación es resultado del elevado contenido de carbono de la segunda. La baja velocidad de enfriamiento del cordón de soldadura revela ausencia de discontinuidades en el retículo cristalino de la zona afectada térmicamente y atenúa la formación de carburos de cromo del tipo Cr23C6, que puede formar la aleación A 351 grado HK 40 durante la difusión del volumen de fracción en masa del cromo.

  1. Uptakes of Cs and Sr on San Joaquin soil measured following ASTM method C1733.

    Energy Technology Data Exchange (ETDEWEB)

    Ebert, W.L.; Petri, E.T. (Chemical Sciences and Engineering Division)

    2012-04-04

    Series of tests were conducted following ASTM Standard Procedure C1733 to evaluate the repeatability of the test and the effects of several test parameters, including the solution-to-soil mass ratio, test duration, pH, and the concentrations of contaminants in the solution. This standard procedure is recommended for measuring the distribution coefficient (K{sub d}) of a contaminant in a specific soil/groundwater system. One objective of the current tests was to identify experimental conditions that can be used in future interlaboratory studies to determine the reproducibility of the test method. This includes the recommendation of a standard soil, the range of contaminant concentrations and solution matrix, and various test parameters. Quantifying the uncertainty in the distribution coefficient that can be attributed to the test procedure itself allows the differences in measured values to be associated with differences in the natural systems being studied. Tests were conducted to measure the uptake of Cs and Sr dissolved as CsCl and Sr(NO{sub 3}){sub 2} in a dilute NaHCO{sub 3}/SiO{sub 2} solution (representing contaminants in a silicate groundwater) by a NIST standard reference material of San Joaquin soil (SRM 2709a). Tests were run to measure the repeatability of the method and the sensitivity of the test response to the reaction time, the mass of soil used (at a constant soil-to-solution ratio), the solution pH, and the contaminant concentration. All tests were conducted in screw-top Teflon vessels at 30 C in an oven. All solutions were passed through a 0.45-{mu}m pore size cellulose acetate membrane filter and stabilized with nitric acid prior to analysis with inductively-coupled plasma mass spectrometry (ICP-MS). Scoping tests with soil in demineralized water resulted in a solution pH of about 8.0 and the release of small amounts of Sr from the soil. Solutions were made with targeted concentrations of 1 x 10{sup -6} m, 1 x 10{sup -5} m, 2.5 x 10{sup -5} m, 5

  2. Development of ASTM Standard for SiC-SiC Joint Testing Final Scientific/Technical Report

    Energy Technology Data Exchange (ETDEWEB)

    Jacobsen, George [General Atomics, San Diego, CA (United States); Back, Christina [General Atomics, San Diego, CA (United States)

    2015-10-30

    As the nuclear industry moves to advanced ceramic based materials for cladding and core structural materials for a variety of advanced reactors, new standards and test methods are required for material development and licensing purposes. For example, General Atomics (GA) is actively developing silicon carbide (SiC) based composite cladding (SiC-SiC) for its Energy Multiplier Module (EM2), a high efficiency gas cooled fast reactor. Through DOE funding via the advanced reactor concept program, GA developed a new test method for the nominal joint strength of an endplug sealed to advanced ceramic tubes, Fig. 1-1, at ambient and elevated temperatures called the endplug pushout (EPPO) test. This test utilizes widely available universal mechanical testers coupled with clam shell heaters, and specimen size is relatively small, making it a viable post irradiation test method. The culmination of this effort was a draft of an ASTM test standard that will be submitted for approval to the ASTM C28 ceramic committee. Once the standard has been vetted by the ceramics test community, an industry wide standard methodology to test joined tubular ceramic components will be available for the entire nuclear materials community.

  3. Prediction of the Coefficient of Thermal Expansion of Naphtha for ASTM Distillation Curve [Predição do Coeficiente de Dilatação Térmica de Naftas pela Curva de Destilação ASTM

    Directory of Open Access Journals (Sweden)

    Carlos Enrique de M. Jerônimo

    2012-08-01

    Full Text Available This paper describes a calculation mechanism obtained from experimental data of ASTM and d20/4 curves to determine the volumetric expansion of naphtha. The study included historical data (experimental of naphtha from directly distillation samples produced in a Brazilian refinery for a period of one year processing, considering the different loads used for this production. The data selection and calculations were performed at idealized routine in Excel®, with values of process streams. The results were within the ranges indicated by the literature in terms of magnitude, but with deviations of less than 15% of the values listed for consideration in the projects. The adoption of this calculation mechanism is quite simple (as it considers data already available in the refineries’ control systems and adds a good adjustment for the parameters prediction to be used in design and sizing of safety valves (PSV - Pressure Safety and Relief Valve.

  4. Kinetic and morphological differentiation of Ettringites in plain and blended Portland cements using Metakaolin and the ASTM C 452-68 test. Part I: kinetic differentiation

    OpenAIRE

    Talero, R.

    2008-01-01

    In this first part of the study, the results obtained in prior research with XRD and SEM, as well as the Le Chatelier-Ansttet test were confirmed with the ASTM C 452-68 test. To this end, 20%, 30% and 40% metakaolin (MK) was added to ten Portland cements, six OPCs and four SRPCs. Both the ten plain PCs and the 30 metakaolin (MK) blends were tested for two years under ASTM C 452-68 specifications, determining not only the percentage increase in length, ΔL(%), of the specimens, but also the sul...

  5. Corrosion of Steel Reinforcements in Fly Ash- and Kaolin-based Geopolymer Concrete Immersed in Distilled Water and ASTM Seawater

    Directory of Open Access Journals (Sweden)

    Astutiningsih S.

    2013-01-01

    Full Text Available Corrosion behavior of steel bar in fly ash- and kaolin-based geopolymer concrete immersed in aggressive media of distilled water and ASTM seawater was compared to Portland cement concrete having similar mix design. An accelerated corrosion by applying 3 V potential on the steel bar was performed to obtain reasonable test results in a relatively short time. The potential and pH of the immersing media were measured from day 1 to day 10 and then plotted on Pourbaix diagram to predict passivation or corrosion state. At day 10, steel bar in Portland cement concrete were in corroded state both in distilled water and seawater. The best corrosion performance was for kaolin- based geopolymer concrete in which at day-10 the steel bar was passivated in both media. Steel bar in fly ash- based geopolymer concrete was passivated in distilled water but corroded in seawater.

  6. Analysis of upper-nose temper embrittlement phenomena in ASTM A533 Type B Class 1 Mn-Mo-Ni pressure vessel steel

    International Nuclear Information System (INIS)

    Upper-nose temper embrittlement processes that occur during tempering of ASTM A533 Type B Class 1 low alloy steel is described. This embrittlement is related to microstructural phenomena, which include grain growth, carbide coarsening and sub-critical phase transformation. The effect of embrittlement on the mechanical properties is presented by means of time-temperature property diagrams. (author)

  7. Standard specification for hot-rolled and cold-finished zirconium and zirconium alloy bars, rod, and wire for nuclear application. ASTM standard

    International Nuclear Information System (INIS)

    This specification is under the jurisdiction of ASTM Committee B-10 on Reactive and Refractory Metals and Alloys and is the direct responsibility of Subcommittee B10.02 on Zirconium and Hafnium. Current edition approved Oct. 10, 1997. Published February 1998. Originally published as B 351-60T. Last previous edition B 351-92

  8. WILL THE MOUSE BIOASSAY FOR ESTIMATING SENSORY IRRITANCY OF AIRBORNE CHEMICALS (ASTM E 981-84) BE USEFUL FOR EVALUATION OF INDOOR AIR CONTAMINANTS

    Science.gov (United States)

    For many toxic inhalants, sensory irritation is the first detectable response. tandardized bioassay, ASTM E 981-84, that quantitates irritancy as a reduction in breathing rate of the mouse during inhalation exposure, has been developed. he validation of this screen for detecting ...

  9. Narrow groove gas tungsten arc welding of ASTM A508 Class 4 steel for improved toughness properties

    Energy Technology Data Exchange (ETDEWEB)

    Penik, M.A. Jr. [Rensselaer Polytechnic Inst., Troy, NY (United States)

    1997-04-01

    Welding of heavy section steel has traditionally used the automatic submerged arc welding (ASAW) process because of the high deposition rates achievable. However, the properties, particularly fracture toughness, of the weld are often inferior when compared to base material. This project evaluated the use of narrow groove gas tungsten arc welding (GTAW) to improve weld material properties. The welding procedures were developed for ASTM A508 Class 4 base material using a 1% Ni filler material complying to AWS Specification A.23-90-EF3-F3-N. A narrow groove joint preparation was used in conjunction with the GTAW process so competitive fabrication rates could be achieved when compared to the ASAW process. Weld procedures were developed to refine weld substructure to achieve better mechanical properties. Two heaters of weld wire were used to examine the effects of minor filler metal chemistry differences on weld mechanical properties. Extensive metallographic evaluations showed excellent weld quality with a refined microstructure. Chemical analysis of the weld metal showed minimal weld dilution by the base metal. Mechanical testing included bend and tensile tests to ensure weld quality and strength. A Charpy impact energy curve versus temperature and fracture toughness curve versus temperature were developed for each weld wire heat. Results of fracture toughness and Charpy impact testing indicated an improved transition temperature closer to that of the base material properties.

  10. High-cycle notch sensitivity of alloy steel ASTM A743 CA6NM used in hydrogenator turbine components

    Directory of Open Access Journals (Sweden)

    José Alexander Araújo

    2010-10-01

    Full Text Available The presence of notches and other stress concentrations in turbine blades and other notch hydraulic components is a current problem in engineering. It causes a reduction of endurance limit of material. In that sense, specimens of the ASTM A743 CA6NM alloy steel using in several hydrogenator turbine components was tested. The specimens were tested under uniaxial fatigue loading with a load ratio equal to -1, and the considered stress concentration factors, Kt, values, calculated with respect to net area, were 1.55, 2.04 and 2.42. In order to determine the fatigue limit for such notch type, a reduction data method by Dixon and Mood, Staircase method was used. This approach is based on the assumed target distribution of the fatigue limit. For such geometry at least 8 specimens were tested. In addition, the Peterson and Neuber’s notch fatigue factor were compared through fatigue notch reduction factor, Kf, obtained from experimental data. According to results obtained it was possible to conclude that the tested material is less sensitive to notches than the prediction of the Peterson and Neuber’s empirical models.

  11. Caracterização microestrutural de soldas dissimilares dos aços ASTM A-508 e AISI 316L Characterization of dissimilar metal weld between low alloy steel ASTM A-508 and 316L stainless steel

    Directory of Open Access Journals (Sweden)

    Luciana Iglésias Lourenço Lima

    2010-06-01

    Full Text Available As soldas dissimilares (dissimilar metal welds - DMWs são utilizadas em diversos segmentos da indústria. No caso específico de usinas nucleares, tais soldas são necessárias para conectar tubulações de aço inoxidável com componentes fabricados em aços baixa liga. Os materiais de adição mais utilizados neste tipo de solda são as ligas de níquel 82 e 182. Este trabalho consistiu na soldagem de uma junta dissimilar de aço baixa liga ASTM A-508 G3 e aço inoxidável austenítico AISI 316L utilizando as ligas de níquel 82 e 182 como metais de adição. A soldagem foi realizada manualmente empregando os processos de soldagem ao arco SMAW (Shielded Metal Arc Welding e GTAW (Gas Tungsten Arc Welding. Os corpos de prova foram caracterizados microestruturalmente utilizando-se microscópio óptico e microscópio eletrônico de varredura com microanálise por dispersão de energia de raios X (EDS e ensaios de microdureza Vickers. Observou-se uma microestrutura constituída de dendritas de austenita com a presença de precipitados com formas e dimensões definidas pelo aporte térmico e pela direção de soldagem. Não houve variação significativa da dureza ao longo da junta soldada, demonstrando a adequação dos parâmetros de soldagem utilizados.The dissimilar metal welds (DMWs are used in several areas of the industries. In the nuclear power plant, this weld using nickel alloy welding wires is used to connect stainless steel pipes to low alloy steel components on the reactor pressured vessels. The filler materials commonly used in this type of weld are nickel alloys 82 and 182.. In this study, dissimilar metal welds composed of low alloy steel ASTM A-508 G3, nickel alloys 82 e 182 as weld metals, and austenitic stainless steel AISI 316L were prepared by manual shielded metal arc welding (SMAW and gas tungsten arc welding techniques (GTAW. Samples were microstructural characterized by optical microscopy and scanning electron microscopy

  12. The USCG[United States Coast Guard]/Environment Canada/ASTM[American Society for Testing and Materials] standards development program

    International Nuclear Information System (INIS)

    The US Coast Guard and the American Society for Testing and Materials (ASTM) Committee F-20, in cooperation with Environment Canada, have embarked on an ambitious program of standards development in the area of marine oil spills. Standards development will proceed in the areas of barriers, skimmers, pumps, beach cleanup, sorbents, bioremediation, in-situ burning, temporary storage devices, communications, and remote sensing. The methodology of standards development and the progress to date are reported

  13. Microstructural evolution of ASTM P91 after 100,000 hours exposure at 550 C and 600 C

    Energy Technology Data Exchange (ETDEWEB)

    Cipolla, L.; Venditti, D.; Di Gianfrancesco, A. [Centro Sviluppo Materiali SpA, Rome (Italy); Caminada, S. [TenarisDalmine, Dalmine (Italy); Danielsen, H.K. [Technical Univ. of Denmark, Lyngby (Denmark)

    2010-07-01

    ASTM A335 P91 samples were investigated after creep testing at 550 C and 600 C for over 10{sup 5} h. X-Ray Diffraction, Scanning and Transmission Electron Microscopy were adopted to assess the microstructural evolution of the material in terms of precipitation changes during high temperature exposure. Mean equivalent diameters and average chemical compositions of MX and M{sub 23}C{sub 6} precipitates and Laves phases were assessed through the analysis of a large number of particles. Their growth and coarsening kinetics were determined at 600 C on many samples with increasing exposure times up to 100,000 hours. Also the presence of modified Z-phase, Cr(V, Nb)N, was investigated. The high microstructural stability of Grade 91 is related to the presence of fine and distributed MX carbonitrides, always present even after very long term temperature exposure. The mean size of MX carbonitrides remains almost constant and stays below 45 nm after 10{sup 5} h at 600 C. Although MX particles exhibit a Cr enrichment with increasing ageing times, indicating that they are absorbing Cr atoms from the surrounding matrix, their transformation into Z-phase is still at a very preliminary stage: only a few hybrid MX/Z particles and a few Z-phase precipitates were identified in the most aged sample after 10{sup 5} at 600 C. Coarsening of M{sub 23}C{sub 6} occurs during thermal exposure, but their average equivalent diameter, initially of 140 nm in the as-treated material, remains below 200 nm after 10{sup 5} h at 600 C. Laves particles form at grain boundaries after a relatively short time and soon become the largest precipitates. (orig.)

  14. Computer program for obtaining thermodynamic and transport properties of air and products of combustion of ASTM-A-1 fuel and air

    Science.gov (United States)

    Hippensteele, S. A.; Colladay, R. S.

    1978-01-01

    A computer program for determining desired thermodynamic and transport property values by means of a three-dimensional (pressure, fuel-air ratio, and either enthalpy or temperature) interpolation routine was developed. The program calculates temperature (or enthalpy), molecular weight, viscosity, specific heat at constant pressure, thermal conductivity, isentropic exponent (equal to the specific heat ratio at conditions where gases do not react), Prandtl number, and entropy for air and a combustion gas mixture of ASTM-A-1 fuel and air over fuel-air ratios from zero to stoichiometric, pressures from 1 to 40 atm, and temperatures from 250 to 2800 K.

  15. Final Report, Volume 5, Data Package for ASTM A923 Supporting Inclusion of A890-5A Super Duplex Stainless Steel ( Cast Equivalent of 2507)

    Energy Technology Data Exchange (ETDEWEB)

    Hariharan, Vasudevan; Lundin, Carl, D.

    2005-09-30

    Volume 5 is the Data Package for the evaluation of Super Duplex Stainless Steel Castings prepared at the end of work comprised in volumes 3 and 4. The document deals with the various evaluation methods used in the work documented in volume 3 and 4. This document covers materials regarding evaluation of the A890-5A material in terms of inclusion in ASTM A923. The various tests which were conducted on the A890-5A material are included in this document.

  16. Final Report, Volume 5, Data Package for ASTM A923 Supporting Inclusion of A890-5 Super Duplex Stainless Steel (Cast Equivalent of 2507)

    Energy Technology Data Exchange (ETDEWEB)

    Hariharan, Vasudevan; Lundin, Carl, W.

    2005-09-30

    Volume 5 is the Data Package for the evaluation of Super Duplex Stainless Steel Castings prepared at the end of work comprised in volumes 3 and 4. The document deals with the various evaluation methods used in the work documented in volume 3 and 4. This document covers materials regarding evaluation of the A890-5A material in terms of inclusion in ASTM A923. The various tests which were conducted on the A890-5A material are included in this document.

  17. Metalurgia de uniones soldadas de aceros disímiles (astm a240-a537) y comportamiento mecánico ante cargas monotónica y cíclica Metallurgy of dissimilar steels welded unions (astm a240-a537) and mechanical behavior under monotonic and cyclic loads

    OpenAIRE

    Andrés García; Rafael Salas; Leiry Centeno; Alberto Velázquez del Rosario

    2012-01-01

    En el presente estudio se caracterizaron las propiedades mecánicas en uniones soldadas de aceros disímiles: un acero estructural (ASTM A537/A537M:95) soldado a tope con un acero inoxidable austenítico 304L (ASTM A240/A240M:01) mediante proceso por arco eléctrico con protección inerte de gas argón (GMAW) y un acero inoxidable austenítico ER- 308L como material aporte (ANSI/AWS A5.9/A5.9M:2006). Las muestras se ensayaron en condición sin soldadura, con el objeto de caracterizar los materiales i...

  18. Welding Procedure for Crushers' Castings with Material of ASTM A487 6A%铸钢件ASTMA4876A粉碎盘焊接修复工艺

    Institute of Scientific and Technical Information of China (English)

    苗晋娟; 张金凤

    2012-01-01

    针对铸钢件ASTM A487 6A粉碎盘在生产过程中产生的裂纹、缩松、缩孔等缺陷的问题,对粉碎盘铸钢件可焊性进行了分析,提出了修复方案和合理的工艺参数.通过采用合理的焊补工艺,实现了该类铸钢件的缺陷修复.%Aimed at existing cast defects of ASTM A487 6A steel bowl castings used in Crusher in production, such as crack, shrinkage, sinkhole, the weldability of the steel castings of ASTM A487 6A was analyzed, and the reasonable welding repair scheme and the optimized weld parameter were put forward. Using the optimized welding repair process can realize the repair of the defect's steel castings.

  19. Diferenciación cinética y morfológica de Ettringitas mediante Metakaolín, cementos Portland y el ensayo ASTM C 452-68. Parte I: diferenciación cinética

    OpenAIRE

    Talero, R.

    2014-01-01

    [EN]In this first part of the study, the results obtained in prior research with XRD and SEM, as well as the Le Chatelier- Ansttet test were confirmed with the ASTM C 452-68 test. To this end, 20%, 30% and 40% metakaolin (MK) was added to ten Portland cements, six OPCs and four SRPCs. Both the ten plain PCs and the 30 metakaolin (MK) blends were tested for two years under ASTM C 452-68 specifications, determining not only the percentage increase in length, ΔL(%), of th...

  20. A modified ASTM C1012 procedure for qualifying blended cements containing limestone and SCMs for use in sulfate-rich environments

    Energy Technology Data Exchange (ETDEWEB)

    Barcelo, Laurent, E-mail: laurent.barcelo@lafarge.com [Lafarge Canada Inc., 334 Avro, Pointe Claire, QC H9R 5W5 (Canada); Lafarge Centre de Recherche, 95 rue du Montmurier, 38291 St Quentin Fallavier (France); Gartner, Ellis; Barbarulo, Rémi [Lafarge Centre de Recherche, 95 rue du Montmurier, 38291 St Quentin Fallavier (France); Hossack, Ashlee [University of New Brunswick, Fredericton, New Brunswick E3B 5A3 (Canada); Ahani, Reza [University of Toronto, 35 St. George Street, Toronto, Ontario M5S 1A4 (Canada); Thomas, Michael [University of New Brunswick, Fredericton, New Brunswick E3B 5A3 (Canada); Hooton, Doug [University of Toronto, 35 St. George Street, Toronto, Ontario M5S 1A4 (Canada); Brouard, Eric [Lafarge Centre de Recherche, 95 rue du Montmurier, 38291 St Quentin Fallavier (France); Delagrave, Anik [Lafarge Canada Inc., 334 Avro, Pointe Claire, QC H9R 5W5 (Canada); Lafarge North-America, 12018 Sunrise Valley Drive, Suite 500, Reston, VA 20191 (United States); Blair, Bruce [Lafarge North-America, 12018 Sunrise Valley Drive, Suite 500, Reston, VA 20191 (United States)

    2014-09-15

    Blended Portland cements containing up to 15% limestone have recently been introduced into Canada and the USA. These cements were initially not allowed for use in sulfate environments but this restriction has been lifted in the Canadian cement specification, provided that the “limestone cement” includes sufficient SCM and that it passes a modified version of the CSA A3004-C8 (equivalent to ASTM C1012) test procedure run at a low temperature (5 °C). This new procedure is proposed as a means of predicting the risk of the thaumasite form of sulfate attack in concretes containing limestone cements. The goal of the present study was to better understand how this approach works both in practice and in theory. Results from three different laboratories utilizing the CSA A3004-C8 test procedure are compared and analyzed, while also taking into account the results of thermodynamic modeling and of thaumasite formation experiments conducted in dilute suspensions.

  1. Prediction methods for the calculation of the flammability properties of gases and vapors: CHETAH and ASTM software. Part 1. Esters and Ethers

    International Nuclear Information System (INIS)

    After the law by decree of the 12. June 2003, N 233 (ATEX Directive) and REACH regulation (Regulation EC n. 2907/2006 of the European Parliament), several industrial fields, also not chemical, need the flammability data for the substances used. Perhaps, many of these data, especially for compounds with not common uses, are not easy to collect. It would be helpful to provide prediction methods in order to calculate these data without any experimentation that sometimes results time consuming, expensive and practically impossible for all the commercial compounds. In this research the ASTM software CHETAH (CHEmical Thermodynamic And Hazard evaluation) has been used in order to compute the lower flammability limit (Li), the limiting oxygen concentration (LOC, using nitrogen as inert gas) as a function of temperature, the adiabatic flame temperature Tflame, the fundamental burning velocity (Su), the quenching distance (Qd), the minimum ignition energy (MIE) for esters and ethers, substances highly used in industry.

  2. Kinetic and morphological differentiation of Ettringites in plain and blended Portland cements using Metakaolin and the ASTM C 452-68 test. Part I: kinetic differentiation

    Directory of Open Access Journals (Sweden)

    Talero, R.

    2008-12-01

    Full Text Available In this first part of the study, the results obtained in prior research with XRD and SEM, as well as the Le Chatelier-Ansttet test were confirmed with the ASTM C 452-68 test. To this end, 20%, 30% and 40% metakaolin (MK was added to ten Portland cements, six OPCs and four SRPCs. Both the ten plain PCs and the 30 metakaolin (MK blends were tested for two years under ASTM C 452-68 specifications, determining not only the percentage increase in length, ΔL(%, of the specimens, but also the sulphate content in the curing water. Other parameters studied included: chemical analysis of the cementitious materials used and specific properties of some of the cements tested.The experimental results, ΔL(% versus time, re-confirmed that the formation rate of ettringite from the reactive alumina, Al2O3r-, present in the pozzolan must be substantially higher than the formation rate of ettringite from the C3A present in the PC. This was verified by the variation of the sulphate content in the specimen curing water throughout the test. In light of those findings, in this article these two types of ettringite are denominated rapid forming ettringite or ett-rf, and slow forming ettringite or ett-lf.En esta Parte I de la investigación, se han logrado verificar mediante el ensayo ASTM C 452-68, los resultados obtenidos en anteriores investigaciones realizadas con DRX y SEM y el ensayo Le Chatelier-Ansttet. Para ello, a 10 cementos Portland –6 CPO y 4 CPRS– se les añadió 20%, 30% y 40% de metakaolín (MK. Tanto los 10 CP como los 30 de sus mezclas con metakaolín (MK, se ensayaron durante 2 años, mediante dicho método ASTM C 452-68, y a sus probetas no sólo se les determinó su incremento porcentual de longitud, ΔL(%, sino además, el contenido de sulfatos de sus aguas de conservación. Otras determinaciones complementarias fueron: análisis químico de los materiales cementiceos utilizados y propiedades específicas de algunos cementos ensayados

  3. A modified ASTM C1012 procedure for qualifying blended cements containing limestone and SCMs for use in sulfate-rich environments

    International Nuclear Information System (INIS)

    Blended Portland cements containing up to 15% limestone have recently been introduced into Canada and the USA. These cements were initially not allowed for use in sulfate environments but this restriction has been lifted in the Canadian cement specification, provided that the “limestone cement” includes sufficient SCM and that it passes a modified version of the CSA A3004-C8 (equivalent to ASTM C1012) test procedure run at a low temperature (5 °C). This new procedure is proposed as a means of predicting the risk of the thaumasite form of sulfate attack in concretes containing limestone cements. The goal of the present study was to better understand how this approach works both in practice and in theory. Results from three different laboratories utilizing the CSA A3004-C8 test procedure are compared and analyzed, while also taking into account the results of thermodynamic modeling and of thaumasite formation experiments conducted in dilute suspensions

  4. Characterization of HANARO neutron radiography facility in accordance with ASTM standard E545-91/E803-91 for KOLAS/ISO17025.

    Science.gov (United States)

    Cheul-Muu, Sim; Ki-Yong, Nam; In-Cheol, Lim; Chang-Hee, Lee; Ha-Lim, Choi

    2004-10-01

    As neutron radiography is even more in demand for industrial applications of aircraft, turbine blade, automobile, explosive igniters, etc, it is necessary to review the standards which are the most appropriate for preparing the procedures for setting up the QA system. Recently, Korea Of Lab Accreditation Scheme (KOLAS) was originated from ISO 17025. It is widely recognized by research peer groups for conducting valid tests. The neutron radiography facility (NRF) of High Flux Advanced Neutron Application Reactor (HANARO), which started ion 1996, is the preliminary stages of KOLAS. The HANARO NRF is not only characterized using ASTM standards E545-91/E803-91 to satisfy the requirements of KOLAS, but in the design phase of the tomography system. PMID:15246410

  5. Stress corrosion (Astm G30-90 standard) in 08x18H10T stainless steel of nuclear fuel storage pool in WWER reactors

    International Nuclear Information System (INIS)

    At the water storage of the irradiated nuclear fuel has been an important factor in its management. The actual pools have its walls covered with inoxidable steel and heat exchangers to dissipate the residual heat from fuel. It is essential to control the water purity to eliminate those conditions which aid to the corrosion process in fuel and at related components. The steel used in this research was obtained from an austenitic inoxidizable steel standardized with titanium 08x18H10T (Type 321) similar to one of the two steel coatings used to cover walls and the pools floor. the test consisted in the specimen deformation through an U ply according to the Astm G30-90 standard. The exposition of the deformed specimen it was realized in simulated conditions to the chemical regime used in pools. (Author)

  6. Development of skimmer testing protocol based on ASTM standards by Minerals Management Service and U.S. Coast Guard at Ohmsett facility

    Energy Technology Data Exchange (ETDEWEB)

    Guarino, A.; Delgado, J.E.; Schmidt, W. [MAR Inc., Leonardo, NJ (United States)]|[Ohmsett Test Facility, Leonardo, NJ (United States); Crickard, M. [United States Coast Guard, National Strike Force, Elizabeth City, NC (United States); Midkiff, B.N. [United States Coast Guard, Portsmouth, VA (United States)

    2007-07-01

    This paper described a joint effort between the United States Coast Guard and the Ohmsett National Oil Spill Response Test Facility operated by the United States Minerals Management Services, in which a skimmer testing protocol was developed based on ASTM Standard F631, the standard guide for collecting skimmer performance data in a controlled environment. The protocol will be used to obtain an effective daily recovery capacity (EDRC) for skimmers. In turn, the EDRC will be used in oil spill response planning. A series of stationary skimmer tests were performed at Ohmsett in the fall of 2004 using the new draft test protocol. The objective was to measure actual oil recovery rate (ORR) of skimming systems under simulated oil spill conditions. Drum skimmers and brush skimmers were used to test the protocol. A total of 7 skimmers from 5 different manufacturers were used. Six condition sets formed the test matrix as derived from the targeted variables of oil type, oil slick thickness, and water surface conditions. Two types of oil were used in the Ohmsett Test set-up, notably ASTM type 1 and type 3 oils. The test area was large enough to maintain a uniform oil slick thickness during skimmer testing. Sufficient oil was used to run the skimmer for 3 minutes or recover 900 litres of oil. Tests were performed under calm conditions and also with waves. The affect of salinity on interfacial tension was also examined. According to the results, the draft test protocol produced reliable, reproducible data that can be used to compare skimmer performance for a given set of conditions as long as ambient variables such as temperature and wind effect are constant. Correlations and trends were not observable for tests conducted at different ambient conditions. Several suggestions were proposed to improve the procedure, as a more comprehensive protocol will facilitate regulators in classifying response organizations according to their oil recovery capabilities. 4 refs., 2 tabs., 3

  7. Changes of the mechanical properties of ASTM A 533 type B class 1 (JRQ) steel used in pressure vessels of nuclear power plants

    International Nuclear Information System (INIS)

    The steels used in pressure vessels generally present a non-homogenous microstructure across the thickness of their walls due to their manufacturing process. Average thickness being between 200-250 mm also makes the problem more serious. These facts lead us to think that the variation affects not only microstructure, but also mechanical properties. For this reason the methodology for the evaluation of materials should be standardized for their use before and after radiation by means of a surveillance program which allows us to verify the conditions of the steel of the pressure vessel by using Charpy-v, tensile and fracto-mechanics specimens inside the reactor to obtain information about the condition of the pressure vessel material. In order to analyze these changes, tests were carried out using Charpy-v specimens with different orientation inside the block representing the wall thickness and the corresponding ductile-to-brittle transition curves were made for each direction. The orientations to be considered will be four in all and will be those called TL, LT, ST and LS by ASTM E 399 (1993). The conclusions reached arise from a comparative analysis of the results obtained for each orientation under study and confirm the recommendation by Standards regarding the selection of the TL orientation as the most conservative. (author)

  8. Manufacturing and fabricating status of ASTM A533 GrB C12 steel plates for EBW for PWR-steam generator

    International Nuclear Information System (INIS)

    There are plans to install or replace many PWR-steam generators. The welding period must be reduced because of its length. The use of electron beam welding (EBW) can greatly reduce the welding period compared to conventional welding methods (narrow-gap GMAW and SAW). The problem in applying EBW is to improve the toughness of the weld metal. The authors investigated the factors that deteriorate weld metal toughness of EBW and made clear the manufacturing process which utilizes a new secondary refining process and a high-torque mill in actual mass production. The actual fabrication was evaluated and approved by an EBW quality assurance committee including neutral members. As a result, application of EBW to PWR-steam generators has become possible and large amounts of ASTM A533 GrB C12 (JIS SQV2B) steel plates for EBW have come to be produced. The authors evaluated EBW base metal and weld joints including fracture toughness, and also reported on the status of fabricating steam generators

  9. ASTM D395 Short-Term Compression Set of Solid (Non-Porous) Siloxanes: SE 1700, Sylgard 184, and "New" M9787

    Energy Technology Data Exchange (ETDEWEB)

    Small, Ward [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Pearson, Mark A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Jensen, Wayne A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-09-13

    Compression set of solid (non-porous) Dow Corning SE 1700, Sylgard 184, and “new” M9787 siloxane elastomers was measured according to ASTM D395 Method B. Specimens of SE 1700 were made using (1) the manufacturer’s suggested cure of 150°C for 30 min and (2) an extended cure of 60°C for 6 h and 150°C for 1 h followed by a post-cure under nitrogen purge at 125°C for 12 h. Four specimens of each material were aged at 25-27% compressive strain at 70°C under nitrogen purge for 70 h. Final thickness of each specimen was measured after a 30-min cooling/relaxation period, and compression set relative to deflection was calculated. The average compression set relative to deflection was 6.0% for SE 1700 made using the extended cure and post-cure, 11.3% for SE 1700 made using the manufacturer’s suggested cure, 12.1% for Sylgard 184, and 1.9% for M9787. The extended cure and post-cure reduced the amount of compression set in SE 1700.

  10. Aplicação da norma astm A923-Prática a para identificação de fases intermetálicas em junta soldada de aço inoxidável superduplex UNS 32750 ASTM A923-Practice A application to identify intermetallic phases in a UNS S32750 superduplex welded joint

    Directory of Open Access Journals (Sweden)

    Sérgio Duarte Brandi

    2010-03-01

    Full Text Available Os aços inoxidáveis duplex e superduplex apresentam propriedades superiores aos aços inoxidáveis convencionais. Essa superioridade é baseada na composição química e em uma microestrutura balanceada (aproximadamente 50% de ferrita. Durante a soldagem podem ocorrer alterações, tanto na composição química, como na fração volumétrica das fases presentes, que podem gerar a presença de fases intermetálicas, que alteram as propriedades originais desses aços. O objetivo deste trabalho é de aplicar a norma ASTM A923-Prática A para verificar a presença de fases intermetálicas na junta soldada de aço inoxidável superduplex UNS 32750. Foram soldados tubos de UNS 32750 com diâmetros externos de 18 e 44 mm e espessura de 1,5 mm. O processo utilizado foi o TIG orbital, com adição de 25Cr-10Ni-4Mo e diâmetro de 0,8 mm. O metal de base e as juntas soldadas foram caracterizados tanto em microscopia óptica como em microscopia eletrônica de varredura. Os resultados mostraram que não houve a precipitação de fases intermetálicas detectadas pela norma ASTM A923, porém na ZAC dos dois tubos estudados apareceram pequenas regiões com precipitação de nitretos de cromo, que também podem alterar as propriedades das juntas soldadas.Duplex and superduplex stainless steels present superior mechanical and corrosion properties when compared to usual stainless steels. This superiority is based on chemical composition when in a balanced microstructure (approximately 50% of ferrite. During welding, changes may occur in both, the chemical composition and volume fraction of phases in the material, which may generate the presence of intermetallic phases and, as a consequence, modify the mechanical and corrosion properties of this group of stainless steels. The objective of this work is to apply ASTM A923- Practice A to verify the presence of intermetallic phases in welded joints of UNS 32750 su-perduplex stainless steel. Tubes of UNS 32750, with

  11. A report on the Round Robin Program conducted to evaluate the proposed ASTM standard test method for determining the plane strain crack arrest fracture toughness, K/sub Ia/, of ferritic materials

    International Nuclear Information System (INIS)

    This report summarizes the results from a Round Robin Program that was conducted during 1983-1985 to evaluate a proposed ASTM Test Method for Crack Arrest Fracture Toughness of Ferritic Materials. The Round Robin attracted a total of twenty-seven participants from the United States, Canada, Europe and Japan, each of whom agreed to test three specimens of A514 bridge steel, three specimens of A588 bridge steel, and six specimens of A533 Grade B Class 1 reactor pressure vessel steel. Twenty-one participants completed their testing and forwarded test results for inclusion and discussion in this report. Modifications to the proposed test method that are called for in the light of the experience gained from the Round Robin are also discussed. The test method has been revised and is currently in the process of being considered by ASTM Committee E-24 on Fracture Testing as a Proposed Standard Test Method. 20 refs., 44 figs., 6 tabs

  12. Comparison of the corrosion resistance of DIN W. Nr. 1.4970 (15%Cr-15%Ni-1.2%Mo-Ti) and ASTM F-138 (17%Cr-13%Ni-2.5%Mo) austenitic stainless steels for biomedical applications

    OpenAIRE

    Maysa Terada; Renato Altobelli Antunes; Angelo Fernando Padilha; Hercílio Gomes de Melo; Isolda Costa

    2006-01-01

    The resistance to localised corrosion of the full austenitic 15%Cr-15%Ni-1.2%Mo titanium stabilized stainless steel (DIN W. Nr. 1.4970) was investigated by electrochemical methods including electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and potentiostatic polarization measurements in a phosphate-buffered solution (PBS). The low carbon and non-stabilized austenitic stainless steel, AISI 316L (ASTM F-138), widely used for surgical implants, was also tested for compar...

  13. Research on UNS S32101 Duplex Stainless Steel SMAW Welding Process%ASTM A240UNS S32101双相不锈钢SMAW焊接工艺研究

    Institute of Scientific and Technical Information of China (English)

    朱金胜; 廖素萍

    2013-01-01

    In this article, the properties and welding characteristics of ASTM A240 UNS S32101 duplex stainless steel were introduced. By using SMAW process, selecting appropriate welding material, adjusting welding process and technical measures, and strictly controlling the interlayer temperature and heat input, the ferrite with proper proportions and austenite dual-phase structure in weld and HAZ were obtained, and the welded joint is with good mechanical properties. Through welding procedure qualification test, the feasibility and effectiveness of SMAW were verified, and the reasonable SMAW welding process for ASTM A240 UNS S32101 duplex stainless steel was determined, thus it will provide instruction to site welding.%针对ASTM A240 UNS S32101双相不锈钢的性能特点和焊接特性,采用手工电弧焊接(SMAW),选用合理的焊接材料,调整焊接工艺和技术措施,严格控制层间温度和焊接热输入,焊接后焊缝及热影响区获得了与母材较为相近、比例适当的铁素体和奥氏体双相组织,焊接接头具有良好的力学性能.并通过焊接工艺评定试验,验证了SMAW焊接方法的可行性和有效性,确定了ASTM A240 UNS S32101双相不锈钢合理的SMAW焊接工艺,为现场焊接提供了指导.

  14. Laboratory Study on Prevention of CaO-Containing ASTM "D-Type" Inclusions in Al-Deoxidized Low-Oxygen Steel Melts During Basic Slag Refining

    Science.gov (United States)

    Jiang, Min; Wang, Xin-Hua; Yang, Die; Lei, Shao-Long; Wang, Kun-Peng

    2015-12-01

    Present work was attempted to explore the possibility of preventing CaO-containing inclusions in Al-deoxidized low-oxygen special steel during basic slag refining, which were known as ASTM D-type inclusions. Based on the analysis on formation thermodynamics of CaO-containing inclusions, a series of laboratory experiments were designed and carried out in a vacuum induction furnace. During the experiments, slag/steel reaction equilibrium was intentionally suppressed with the aim to decrease the CaO contents in inclusions, which is different from ordinary concept that slag/steel reaction should be promoted for better control of inclusions. The obtained results showed that high cleanliness of steel was obtained in all the steel melts, with total oxygen contents varied between 0.0003 and 0.0010 pct. Simultaneously, formation of CaO-containing inclusions was successfully prohibited, and all the formed oxide inclusions were MgO-Al2O3 or/and Al2O3 in very small sizes of about 1 to 3 μm. And 90 pct to nearly 98 pct of them were wrapped by relative thicker MnS outer surface layers to produce dual-phased "(MgO-Al2O3) + MnS" or "Al2O3 + MnS" complex inclusions. Because of much better ductility of MnS, certain deformability of these complex inclusions can be expected which is helpful to improve fatigue resistance property of steel. Only very limited number of singular MnS inclusions were with sizes larger than 13 μm, which were formed during solidification because of. In the end, formation of oxide inclusions in steel was qualitatively evaluated and discussed.

  15. Determination of the sensitization of two coatings by steel welding 308l by the EPR-Dl and Astm A-262 practice A techniques; Determinacion de la sensibilizacion de dos revestimientos por soldadura de acero 308L por las tecnicas EPR-DL y ASTM A-262 practica A

    Energy Technology Data Exchange (ETDEWEB)

    Arganis J, C. R.; Zenteno S, J. C.; Robles F, J. L.; Rodriguez M, E.; Vazquez P, A., E-mail: carlos.arganis@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2014-10-15

    A stainless steel 308l coating was deposited by the shielded metal arc welding (SMAW) on steel A36 with a thickness of 4.726 mm in three layers. The sensitization was measured with the technique of Electrochemical Potentiodynamic Reactivation of Double-loop (EPR-Dl), using a portable cell and other of conventional window. The standard Astm A-262, practice A was used to verify the sensitization values. Two samples were used, a welding on a plate of 323 x 172 x 76.2 mm and the second welding on the end of a plate of 12.7 mm of thickness and 280 mm of longitude, with a post-welding process with gas tungsten arc welding (GTAW) with electrode ERNiCr{sub 3} and a process SMAW with electrode ENICRFe{sub 3}. The coating on the plate showed low values of sensitization grade (DOS) in all the points, indicating a very quick heat extraction and an inter dendritic structure type step. The second sample presented DOS values that are related with a structure of low sensitization and the influence of the heat of the post-welding process and a structure of recrystallized grains. (Author)

  16. Influencia del modo de transferencia por arco pulsado en el proceso de soldadura GMAW con alambre compuesto con núcleo metálico sobre la soldabilidad del acero ASTM A 131 grado AH32

    OpenAIRE

    Romero Nieto, Sandra Patricia

    2012-01-01

    Este trabajo estudia la influencia de la transferencia de arco pulsado en el proceso de soldadura GMAW con alambre compuesto de núcleo metálico, en uniones soldadas de acero ASTM A131 grado AH 32 utilizando dos composiciones de gas de protección y los modos de transferencia de arco pulsado y corto circuito. Las propiedades mecánicas y la microestructura se evaluaron y los resultados indican que se logra mayor resistencia a la tensión y un perfil de dureza más homogéneo utilizando el modo de t...

  17. Kinetic and morphological differentiation of ettringites in plain and blended Portland cements with metakaolin and the ASTM C 452-68 test. Part II: Morphological differentiation by SEM and XRD analysis

    Directory of Open Access Journals (Sweden)

    Talero, R.

    2009-03-01

    Full Text Available The same cementitious materials (OPCs, SRPCs and matekaolin, MK, the same blended cements and the same ASTM C 452-68 test than in Part I, were used. Other complementary determinations were: chemical analysis of cementing materials, SEM and XRD analysis of ettringites and specific properties of some cement tested and of their pastes.The experimental results have also demonstrated that when 7.0% SO3, equivalent to 15.05% of gypsum, was added to the M pozzolan-containing Portland cement and tested with the ASTM C 452-68 method, it was not found to behave aggressively but rather as “setting regulator ”, because the increase in mechanical strengths over time and setting times in these mixes were, therefore, similar to the pattern observed in any PC. However, when the gypsum content was raised to triple than that amount (21.0% SO3, it behaved aggressively. In both cases, logically, ettringite from both origins were involved in the resulting beneficial or adverse behavior.En esta Parte II se utilizaron los mismos materiales cementíceos (CPO, CPRS, y metakaolín, MK, los mismos cementos de mezcla y el mismo método de ensayo ASTM C 452-68 que en la Parte I. Otras determinaciones complementarias fueron: análisis químico de los materiales cementíceos, análisis por DRX y SEM de ettringitas y propiedades específicas de algunos cementos ensayados y de sus pastas.Los resultados experimentales obtenidos han demostrado también que, el 7.0% de SO3 presente en los 30 cementos de mezcla con MK, ensayados conforme el método ASTM C 452-68, no se comporta como agresivo sino como ”regulador de fraguado”, porque los tiempos de fraguado y el aumento de resistencias mecánicas fueron como los de cualquier CP. De aquí que algunos de esos cementos de mezcla puedan ser considerados “cementos hidráulicos expansivos”, el resto, no. Sin embargo, cuando la cantidad de yeso aportada fue el triple (21,0% SO3, se comportó como agresivo, motivo por el cual

  18. Diferenciación cinética y morfológica de Ettringitas mediante Metakaolín, cementos Portland y el ensayo ASTM C 452-68. Parte I: diferenciación cinética.

    OpenAIRE

    Talero Morales, Rafael

    2008-01-01

    [ES] En esta Parte I de la investigación, se han logrado verifi- car mediante el ensayo ASTM C 452-68, los resultados obtenidos en anteriores investigaciones realizadas con DRX y SEM y el ensayo Le Chatelier-Ansttet. Para ello, a 10 cementos Portland –6 CPO y 4 CPRS– se les añadió 20%, 30% y 40% de metakaolín (MK). Tanto los 10 CP como los 30 de sus mezclas con metakaolín (MK), se ensayaron durante 2 años, mediante dicho método ASTM C 452-68, y ...

  19. Identificación y cuantificación de fases en acero inoxidable ASTM A743 grado CA6NM mediante la técnica de difracción de rayos x

    OpenAIRE

    Rojas Marín, Jessika Viviana

    2009-01-01

    La técnica de difracción de rayos X a altas temperaturas fue aplicada al estudio de las transformaciones de fase en el acero inoxidable martensítico ASTM A743 grado CA6NM, material ampliamente usado en la fabricación de componentes hidráulicos por las excelentes propiedades mecánicas que ofrece. Mediante la técnica de difracción de rayos X y en el intervalo de temperaturas entre 25-860°C se estudió la dilatación térmica del acero durante el calentamiento, se identificaron las temperaturas de ...

  20. Comparison of the corrosion resistance of DIN W. Nr. 1.4970 (15%Cr-15%Ni-1.2%Mo-Ti and ASTM F-138 (17%Cr-13%Ni-2.5%Mo austenitic stainless steels for biomedical applications

    Directory of Open Access Journals (Sweden)

    Maysa Terada

    2006-09-01

    Full Text Available The resistance to localised corrosion of the full austenitic 15%Cr-15%Ni-1.2%Mo titanium stabilized stainless steel (DIN W. Nr. 1.4970 was investigated by electrochemical methods including electrochemical impedance spectroscopy (EIS, potentiodynamic polarization and potentiostatic polarization measurements in a phosphate-buffered solution (PBS. The low carbon and non-stabilized austenitic stainless steel, AISI 316L (ASTM F-138, widely used for surgical implants, was also tested for comparison. The tests were conducted at room temperature after a stable potential had been reached. After the electrochemical measurements, the surfaces of the specimens were observed using SEM to evaluate the presence of pits. Potentiodynamic polarization results showed that both steels are prone to localized corrosion. Larger pits were found on the surface of AISI 316L specimens after the electrochemical tests. EIS response has indicated the duplex structure of the passive oxides. The results showed that the electrochemical behaviour of the DIN W. Nr. 1.4970 is better than of AISI 316L steel. Therefore, their application as an implant material may be considered.

  1. Contribución al análisis y estudio de las posibilidades de variación de la cantidad de yeso, CaSO4.2 H2O, como agresivo, del método acelerado de ensayo ASTM C 452. Parte I A

    OpenAIRE

    Talero Morales, Rafael

    1988-01-01

    This research work, which will include four publications, was done as a result of the discussions, doubts and controversies which were originated some time ago about the ASTM C 452 method and specially on its 7.0% SO3 content. To clarify this two portland cements P-1 (14.11% C3A) and P-31 (7.62% C3), all it industriéis, were tested and a pozzolanic cement PUZ-8, by the ASTM C 452-68 method, but using gypsum, CaSO4. 2 H2O, with aggressive contents of 5.0%, 7.0%, 10.0%, 12.0% and 14.0% SO3, re...

  2. Biodiesel Fuel Quality and the ASTM Standard

    Science.gov (United States)

    Biodiesel is usually produced from vegetable oils, animal fats and used cooking oils with alternative feedstocks such as algae receiving increasing interest. The transesterification reaction which produces biodiesel also produces glycerol and proceeds stepwise via mono- and diacylglycerol intermedia...

  3. 水泥标准应有利于充分利用矿物掺和料─水泥性能标准ASTM C1157的启示

    Institute of Scientific and Technical Information of China (English)

    赵筠; 廉慧珍

    2014-01-01

    水泥和混凝土工业为消纳和利用工业固体废料做出了巨大贡献。在全球节能减排的紧迫要求下,需要进一步的技术创新深挖潜力,更高效地发挥矿物掺和料的作用。加拿大Malhotra教授及其同事们开发和推广应用的大掺量粉煤灰(HVFA)混凝土,为建造比用传统的硅酸盐水泥更耐久、更有效地利用资源的混凝土结构提供了新技术途径。在加拿大,已将大掺量矿物掺和料列入2004年发布的标准《混凝土材料和混凝土施工方法》(CSAA23.1-04)中,其中粉煤灰和矿渣粉总掺量最大可达65%~95%。欧洲水泥标准EN 197-1所列5个水泥类型系列中,除了CEM I外,都涉及对矿物掺和料最大限度的利用问题。然而,大多数现行水泥标准对化学成分和组成的限制,束缚了掺和料的有效利用。EN 197-1虽然通过较宽松的掺和料允许掺量范围,适应技术的发展创新和促进水泥的绿色化,但仍然是传统的性能要求加组分和化学指标的限制。第一个水泥性能标准-发布于1992年的美国《水泥标准性能规范》(ASTM C1157),取消了对水泥的组分、化学成分和矿物组成以及细度的限制,只规定了水泥的性能指标,包括安定性、凝结时间、强度、水化热、耐久性和选择性性能指标。这个性能标准体现了水泥应用的本质,可较好地克服标准规范对高效利用掺和料的阻碍,值得借鉴。

  4. NIF pointing and centering systems and target alignment using a 351 nm laser source

    International Nuclear Information System (INIS)

    The operational requirements of the National Ignition Facility (NIF) place tight constraints upon its alignment system. In general, the alignment system must establish and maintain the correct relationships between beam position, beam angle, laser component clear apertures, and the target. At the target, this includes adjustment of beam focus to obtain the correct spot size. This must be accomplished for all beamlines in a time consistent with planned shot rates and yet, in the front end and main laser, beam control functions cannot be initiated until the amplifiers have sufficiently cooled so as to minimize dynamic thermal distortions during and after alignment and wavefront optimization. The scope of the task dictates an automated system that implements parallel processes. We describe reticle choices and other alignment references, insertion of alignment beams, principles of operation of the Chamber Center Reference System 2048 and Target Alignment Sensor, and the anticipated alignment sequence that will occur between shots

  5. Contribución al análisis y estudio de las posibilidades de variación de la cantidad de yeso, CaS04.2 H2O, como agresivo, del método acelerado de ensayo ASTM C 452 (1 (2 y (3. Parte IIB

    Directory of Open Access Journals (Sweden)

    Talero Morales, Rafael

    1989-09-01

    Full Text Available The reader should first refer to the summary of the IA(1, IB(2 and IIA(3 parts of this work (published in Materiales de Construcción nos. 209, 211 and 212, respectively in order to have a clearer idea of the subject being dealt with herein. The use of the larger quantities of gypsum as aggressive agent than the 15.05% (≃ 7.0 % SO3 specified by the ASTM C 452 method has shown its possible interest to users of cement and those who have to judge and/or recommend, or otherwise, its employment. In general the DEGREE OF RESPONSE of the parameter ΔL (% in the case of the 21.0 % SO3 and 14 days age test, continued by the 12.0% and 28 days age test, appear to be more appropiated to evaluate more precisely the Portland and pozzolanic cements which are tested thus. The 21.0% SO3 content test has shown that not ALL THE POZZOLANIC CEMENTS have high or moderate sulphate resistance against seleniteuse water attack in contrast to the response shown by the rest of the cements with smaller SO3 contents tested. It is recommended to carry out a appropriate, rational and representative investigation of pozzolanic cements to confirm, or otherwise, these last conclusion on those cements.En primer lugar el lector debe remitirse a los resúmenes de las partes lA, IB y HA de este trabajo (publicadas en los Nos 209. 211 y 212, respectivamente, de Materiales de Construcción con objeto de que pueda tener una idea más clara del tema que se desarrolla. El empleo de mayores cantidades de yeso, como agresivo, que el 15,05% (≃7,0% de SO3 especificado por el método ASTM C 452, ha demostrado un interés cierto por parte de los usuarios de cemento y de aquellos que hayan de juzgar y/o aconsejar y/o decidir el empleo, o no, de un determinado cemento en base a su dictamen. En general, el grado de respuesta del parámetro empleado en el caso del 21,0% de SO3 y edad de las probetas de 14 días, seguido del 12,0% de SO3 y edad de 28 días, parecen ser los más apropiados para

  6. Contribución al análisis y estudio de las posibilidades de variación de la cantidad de yeso, CaS04.2 H2O, como agresivo, del método acelerado de ensayo ASTM C452 [Continuación (1] Parte I B

    Directory of Open Access Journals (Sweden)

    Talero Morales, Rafael

    1988-09-01

    Full Text Available The reader should first refer to the summary of the first part of this work (published in Materials de Construction, no. 209 in order to have a clearer idea of the subject being dealt with herein. In this part of the work, the experimental results of the ECO parametre (Evolution of Organoleptic Characteristics of the Test Pieces are given, in order that they be interpreted along with those of the " Δ L (% and Δ L (%/g cement parametres, given in Part IA (1. These experimental results have shown that: 1.° The pozzolanic cement PUZ-8 withstood plaster aggression better than the P-1 (14.11% C3A and the P-31 (7.62% C3A. This better behaviour should not, cannot, be extended de facto to all other pozzolanic cements, nor to all quantities greater than 30.11 % plaster (~ 14.0% SO3 used as aggressive agents. 2.° The use as aggressive agents of quantities of plaster greater than 15.05% (7.0% SO3, specified expressly by the ASTM C 452 method, has proved of possible interest to those who must judge necessary and/or advise the use of a given cement resulting from their judgement. 3.° The degree of response — of the Δ L (% parametre, in the case of 12.0% SO3 and test pieces aged 28 days, and — of the Δ L (%/g cement parametre, in the case of 14.0% SO3 and test pieces aged 14 days, appear to be the most appropriate for grading more precisely cements being tested in this way.En primer lugar el lector debe remitirse al resumen de la primera parte de este trabajo (publicada en el n.° 209 de Materiales de Construcción con objeto de que pueda tener una idea más clara del tema que se desarrolla. En esta parte se exponen los resultados experimentales del parámetro ECO (Evolución de las Características Organolépticas de las probetas para su interpretación junto con los de los parámetros Δ L (% e Δ L (%/g cemento, expuestos en la parte IA (1. Tales resultados experimentales han demostrado que: 1° El cemento puzolánico PUZ-8 mostró un mejor

  7. Astmed ja hüpped / Meelis Friedenthal

    Index Scriptorium Estoniae

    Friedenthal, Meelis, 1973-

    2010-01-01

    Dan Gordoni näidend "Vihmamees" (Rain Man) samanimelise filmi põhjal, filmistsenaariumi autorid Ronald Bass ja Barry Morrow, stsenaariumi aluseks Barry Morrow jutustus, lavastaja Georg Malvius. Esietendus 20. novembril Vanemuise väikeses majas

  8. FENOTIPOVI ASTME I POREMEĆAJ HOMEOSTAZE IMUNOLOŠKOG SUSTAVA

    OpenAIRE

    STIPIĆ MARKOVIĆ, ASJA

    2011-01-01

    Danas razumijemo mnoge regulatorne putove u signalizaciji koja se odvija prije i poslije sinteze IgE i poznajemo učinke mnogobrojnih medijatora u alergijskog kaskadi, ali astma ipak i dalje ostaje klinički i znanstveni problem. Suvremena civilizacija zbunjuje imunološki sustav pa nastaje kompleksna interakcija između epigenetske regulacije, varijabilnih vanjskih čimbenika i različitih kombinacija parova utjecaja: gena, antigena i razdoblja života. Stoga će biti potrebno odgovoriti na pitanje ...

  9. Transferability of ASTM/NIST alanine-polyethylene recipe at ISS

    International Nuclear Information System (INIS)

    Alanine-polyethylene solid state dosimeters were prepared at Istituto Superiore di Sanita (ISS) following the recipe proposed by National Institute of Standards and Technology (NIST) with the goal of testing its transferability. Dosimeters were prepared using 95% alanine and 5% polyethylene, by weight. They are rugged and of increased sensitivity, repeatability and reproducibility as respect to the ISS alanine-paraffin pellets. Reproducibility of about 1% was obtained at 10 Gy and at 3 Gy if one single pellet or a stack of five dosimeters were used, respectively

  10. ASTM F1717 standard for the preclinical evaluation of posterior spinal fixators: can we improve it?

    Science.gov (United States)

    La Barbera, Luigi; Galbusera, Fabio; Villa, Tomaso; Costa, Francesco; Wilke, Hans-Joachim

    2014-10-01

    Preclinical evaluation of spinal implants is a necessary step to ensure their reliability and safety before implantation. The American Society for Testing and Materials reapproved F1717 standard for the assessment of mechanical properties of posterior spinal fixators, which simulates a vertebrectomy model and recommends mimicking vertebral bodies using polyethylene blocks. This set-up should represent the clinical use, but available data in the literature are few. Anatomical parameters depending on the spinal level were compared to published data or measurements on biplanar stereoradiography on 13 patients. Other mechanical variables, describing implant design were considered, and all parameters were investigated using a numerical parametric finite element model. Stress values were calculated by considering either the combination of the average values for each parameter or their worst-case combination depending on the spinal level. The standard set-up represents quite well the anatomy of an instrumented average thoracolumbar segment. The stress on the pedicular screw is significantly influenced by the lever arm of the applied load, the unsupported screw length, the position of the centre of rotation of the functional spine unit and the pedicular inclination with respect to the sagittal plane. The worst-case combination of parameters demonstrates that devices implanted below T5 could potentially undergo higher stresses than those described in the standard suggestions (maximum increase of 22.2% at L1). We propose to revise F1717 in order to describe the anatomical worst case condition we found at L1 level: this will guarantee higher safety of the implant for a wider population of patients. PMID:25319550

  11. Slow strain rate behavior of TiCode 12 (ASTM Gr.12) in aqueous chloride solutions

    International Nuclear Information System (INIS)

    Slow strain rate testing has shown that the macroscopic tensile properties of mill-annealed TiCode 12 are not affected by exposure to either a synthetic seawater or high chloride brine environment. However, microscopic examination indicates that the fracture mode may be sensitive to environment. This sensitivity appears to be related to hydrogen ingress during prolonged exposure

  12. A PROBABALISTIC ANALYSIS TO DETERMINE ECOLOGICAL RISK DRIVERS, 10TH VOLUME ASTM STP 1403

    Science.gov (United States)

    A probabilistic analysis of exposure and effect data was used to identify chemicals most likely responsible for ecological risk. The mean and standard deviation of the natural log-transformed chemical data were used to estimate the probability of exposure for an area of concern a...

  13. An Experimental Study of Thermal Fatigue on ASTM A 213 Grade T-23 Steel Tube

    OpenAIRE

    Jinu, G. R.; P.Sathiya; Ravichandran, G; Rathinam, A.

    2009-01-01

    Super heater tubes are subjected to alternate heating and cooling in power plants causes crack and eventually fail. This phenomenon is termed as thermal fatigue. In this paper, a laboratory simulation for reproducing thermal fatigue phenomenon is developed to determine the number of cycles of failure occurs in super heater tubes. Thermal fatigue tests are conducted in Non-Destructive Tested T23 base and SMAW welded tubes separately. The tubes are subjected to thermal cycles from 800∘C (accele...

  14. Comparison of thermal fatigue behaviour of ASTM A 213 grade T-92 base and weld tubes

    International Nuclear Information System (INIS)

    Super-heater tubes are subjected to alternate heating and cooling in power plants causing them to crack and eventually fail. This phenomenon is referred to as 'thermal fatigue.' In this paper, a laboratory simulation for reproducing the thermal fatigue phenomenon is developed to determine the number of cycles necessary before failure occurs in super-heater tubes. The temperature and strain distributions along the specimen were computed theoretically using ANSYS software for the applied temperature condition. The thermal fatigue test was conducted for both base and shielded metal arc (SMA) welded tubes separately and both passed in the non-destructive tests. These tubes were subjected to thermal cycles from 800 .deg. C (accelerated temperature) to room temperature. Oxy-acetylene heating setup was utilized as a heating source, and a water bath was utilized for quenching purposes. The tests were carried out until open cracks were identified. Surface cracks were identified in the base and weld tubes after 90 and 60 cycles respectively. This study reveals that heating and cooling cause thermal fatigue, initiate cracks in the tubes

  15. Hydrogen Cracking and Stress Corrosion of Pressure Vessel Steel ASTM A543

    Science.gov (United States)

    AlShawaf, Ali Hamad

    The purpose of conducting this research is to develop fundamental understanding of the weldability of the modern Quenched and Tempered High Strength Low Alloy (Q&T HSLA) steel, regarding the cracking behavior and susceptibility to environmental cracking in the base metal and in the heat affected zone (HAZ) when welded. A number of leaking cracks developed in the girth welds of the pressure vessel after a short time of upgrading the material from plain carbon steel to Q&T HSLA steel. The new vessels were constructed to increase the production of the plant and also to save weight for the larger pressure vessel. The results of this research study will be used to identify safe welding procedure and design more weldable material. A standardized weldability test known as implant test was constructed and used to study the susceptibility of the Q&T HSLA steel to hydrogen cracking. The charged hydrogen content for each weld was recorded against the applied load during weldability testing. The lack of understanding in detail of the interaction between hydrogen and each HAZ subzone in implant testing led to the need of developing the test to obtain more data about the weldability. The HAZ subzones were produced using two techniques: standard furnace and GleebleRTM machine. These produced subzones were pre-charged with hydrogen to different levels of concentration. The hydrogen charging on the samples simulates prior exposure of the material to high humidity environment during welding process. Fractographical and microstructural characterization of the HAZ subzones were conducted using techniques such as SEM (Scanning Electron Microscopy). A modified implant test using the mechanical tensile machine was also used to observe the effects of the hydrogen on the cracking behavior of each HAZ subzone. All the experimental weldability works were simulated and validated using a commercial computational software, SYSWELD. The computational simulation of implant testing of Q&T HSLA with the previously used plain carbon steel and other currently used pressure vessel steels was successfully completed. The experimental and computational results of the Q&T HSLA steel agreed well with each other. The susceptibility of the Q&T A543 steel to stress corrosion cracking was investigated using the slow strain rate testing under different environments and conditions. Also, advanced corrosion study using the electrochemical impedance spectroscopy was done at different conditions. The corrosion study revealed that this A543 steel is prone to form pits in most of the conditions. The model results in the corrosion study were validated with the Gamry Echem Analyst software that A543 steel tends to form pits in the tested environment.

  16. Hardness and microstructural response to thermal annealing of irradiated ASTM A533B class 1 plate steel

    Energy Technology Data Exchange (ETDEWEB)

    Reinhart, D.E. [SMS Concast, Inc., Pittsburgh, PA (United States); Kumar, A.S. [Univ. of Missouri, Rolla, MO (United States); Gelles, D.S.; Hamilton, M.L. [Pacific Northwest Lab., Richland, WA (United States); Rosinski, S.T. [Electric Power Research Inst., Charlotte, NC (United States)

    1999-10-01

    Hardness measurements were used to determine the post-irradiation annealing response of A533B class 1 plate steel irradiated to a fluence of 1 {times} 10{sup 19} n/cm{sup 2} (E > 1 MeV) at 150 C. Rockwell hardness measurements indicated that the material had hardened by 6.6 points on the B scale after irradiation. The irradiation induced hardness increase was associated with a decrease in upper shelf energy from 63.4 J to 5-1.8 J and a temperature shift in the Charpy curve at the 41 J level from 115 C to 215 C. Specimens were annealed after irradiation at temperatures of 343 C (650 F), 399 C (750 F), and 454 C (850 F) for durations of up to one week (168 h). Hardness measurements were made to chart recovery of hardness as a function of time and temperature. Specimens annealed at the highest temperature 454 C recovered the fastest, fully recovering within 144 h. Specimens annealed at 399 C recovered completely within 168 h. Specimens annealed at the lowest temperature, 343 C recovered only {approximately}70% after 168 h of annealing. After neutron irradiation, a new feature of black spot damage was found to be superimposed on the unirradiated microstructure. The density of black spots was found to vary from 2.3 {times} 10{sup 15}/cm{sup 3} to 1.1 {times} 10{sup 16}/cm{sup 3} with an average diameter of 2.85 nm. Following annealing at 454 C for 24 h the black spot damage was completely annealed out. It was concluded that the black spot damage was responsible for 70% of the irradiation-induced hardness.

  17. Hardness and microstructural response to thermal annealing of irradiated ASTM A533B class 1 plate steel

    International Nuclear Information System (INIS)

    Hardness measurements were used to determine the post-irradiation annealing response of A533B class 1 plate steel irradiated to a fluence of 1 x 1019 n/cm2 (E > 1 MeV) at 150 C. Rockwell hardness measurements indicated that the material had hardened by 6.6 points on the B scale after irradiation. The irradiation induced hardness increase was associated with a decrease in upper shelf energy from 63.4 J to 5-1.8 J and a temperature shift in the Charpy curve at the 41 J level from 115 C to 215 C. Specimens were annealed after irradiation at temperatures of 343 C (650 F), 399 C (750 F), and 454 C (850 F) for durations of up to one week (168 h). Hardness measurements were made to chart recovery of hardness as a function of time and temperature. Specimens annealed at the highest temperature 454 C recovered the fastest, fully recovering within 144 h. Specimens annealed at 399 C recovered completely within 168 h. Specimens annealed at the lowest temperature, 343 C recovered only ∼70% after 168 h of annealing. After neutron irradiation, a new feature of black spot damage was found to be superimposed on the unirradiated microstructure. The density of black spots was found to vary from 2.3 x 1015/cm3 to 1.1 x 1016/cm3 with an average diameter of 2.85 nm. Following annealing at 454 C for 24 h the black spot damage was completely annealed out. It was concluded that the black spot damage was responsible for 70% of the irradiation-induced hardness

  18. Toxicity Tests of Whole Sediment Samples Using the Hyallella (H. azteca) Survival and Growth Tests (ASTM E 1283-93)

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — 10-day toxicity tests using Hyalella azteca were conducted with sediment samples collected by the U.S. Fish & Wildlife Service, Bloomington, Indiana facility to...

  19. Studi Eksperimen perbandingan Laju Korosi pada Plat ASTM (American Society For Testing and Material A36 dengan Menggunakan Variasi Sudut Bending

    Directory of Open Access Journals (Sweden)

    Amri Royan Hidayat

    2013-03-01

    Full Text Available Proses pembentukan plat baja dalam industri kelautan diketahui bervariasi proses pengerjaannya, tidak hanya pengelasan saja, namun dapat pula konstruksi bending (bengkok. Bending, mempunyai dua variasi metode yaitu hot bending dan cold bending. Untuk mengetahui metode mana yang lebih tepat digunakan pada industri kelautan, dilakukan penelitian dengan menggunakan perbandingan kedua metode bending tersebut menggunakan variasi sudut yakni 90° dan 135°. Masing-masing sudut yang digunakan dibagi menjadi tiga spesimen yang akan mempengaruhi laju korosi pada plat tersebut. Uji laboratorium dengan menggunakan NaCl 2% dilakukan untuk mengetahui berapa laju korosi dari metode hot bending dan metode cold bending. Perhitungan kemudian dilakukan setelah hasil laju korosi didapat, untuk menentukan grafik laju  korosi dari variasi bending tersebut. Hasil uji laju korosi pada metode cold bending dengan sudut bending 90° adalah 0,54 mm/year, dan untuk sudut bending 135° adalah 0,32 mm/year. Sedangkan hasil uji laju korosi pada metode hot bending dengan sudut bending 90° adalah 0,53 mm/year, dan untuk sudut bending 135° adalah 0,24 mm/year. Metode cold bending diketahui mempunyai nilai laju korosi lebih besar dibandingkan metode hot bending. Morfologi permukaan spesimen dianalisa dengan menggunakan Scanning Electron Microscopy (SEM. Permukaan spesimen dengan metode cold bending diketahui mengalami perubahan yang cukup besar dibanding spesimen dengan metode hot bending.

  20. Creep and microstructural processes in a low-alloy 2.25%Cr1.6%W steel (ASTM Grade 23)

    Czech Academy of Sciences Publication Activity Database

    Kuchařová, Květa; Sklenička, Václav; Kvapilová, Marie; Svoboda, Milan

    2015-01-01

    Roč. 109, NOV (2015), s. 1-8. ISSN 1044-5803 R&D Projects: GA TA ČR TA02010260; GA MŠk(CZ) ED1.1.00/02.0068 Institutional support: RVO:68081723 Keywords : Bainitic steel * Low- alloy steel * Creep strength * Microstructural changes * Carbide precipitation Subject RIV: JG - Metallurgy Impact factor: 1.845, year: 2014

  1. Modifications of ASTM E 813-81 standard test method for an improved definition of Jlc using new blunting-line equation

    International Nuclear Information System (INIS)

    A test procedure for determining the fracture resistance of ductile metallic materials under stable crack growth conditions is described. The procedure consists of the determination of a J-Δa curve with particular emphasis on the near-initiation region. In our proposal, JIc is defined as the fracture resistance at 0.2-mm stable ductile tearing. It is determined by the intersection of the J-Δa curve with an intercept line which is parallel to and 0.2 mm off the blunting line. The blunting-line formula is improved by accounting for the strain hardening behavior of the material. A simple determination of the blunting-line equation is shown, and its applicability is checked using a broad range of materials. (orig.)

  2. 20,000-hour stress-corrosion cracking tests on ASTM A36 and A387-9 steels in simulated Hanford groundwater

    International Nuclear Information System (INIS)

    Modified WOL specimens were employed to evaluate the susceptibility of two candidate container materials, A36 and A387-9 steels, to SCC in simulated groundwater at 2500C. The test duration was 20,000 hours. Post-test measurements of specimen compliance were not possible because significant build-up of corrosion products and/or mineral deposits on the fracture faces prevented a linear relationship between load and displacement. Considerable load was ''lost'' due to time-independent plasticity, time-dependent deformation and crack-face wedging, but the amounts lost were comparable to similar short-term tests conducted earlier. A number of direct and indirect observations suggested that no crack extension occurred during the environmental exposure. One indirect observation, the initial pre-test compliance measurements, suggested a possibility of crack extension occurred, but it is believed that these measurements were in error because of the experimental test set-up used in the program

  3. Influencia de la microestructura en el comportamiento a desgaste abrasivo evaluado bajo norma ASTM G 65 de depósitos de soldadura antidesgaste aplicados sobre sustratos de acero de baja aleación y bajo carbono / Influence of microstructure on the behavior abrasive wear tested under ASTM G 65 weld deposits on substrates used wear low alloy steel and low carbon

    OpenAIRE

    Pérez Cepeda, Jaime Andrés

    2011-01-01

    En la reconstrucción de piezas de maquinarias es esencial el poder determinar la mejor opción en cuanto a material depositado por soldadura para recuperación de geometrías perdidas se refiere. El presente trabajo se desarrolló para mejorar las aplicaciones de recubrimientos duros y material de relleno para la reconstrucción de “sprockets”, pero que se pueda extrapolar al uso en industrias de diferente tipo. Se tomaron en cuenta tres (3) factores, material depositado, temperatur...

  4. Efeito da temperatura interpasse na microestrutura, tenacidade ao impacto e propagação de trinca por fadiga de uniões soldadas por GTAW do aço ASTM A743-CA6NM Interpass temperature influence on the microstructure, impact toughness and fatigue crack propagation in ASTM A743-CA6NM GTAW welded joints

    Directory of Open Access Journals (Sweden)

    Ruimar Rubens de Gouveia

    2013-06-01

    Full Text Available Atualmente os aços inoxidáveis martensíticos tem sido utilizados para a fabricação de turbinas hidráulicas, devido principalmente a sua elevada tenacidade. Entretanto, estes aços apresentam algumas restrições com relação à regiões recuperadas por soldagem, principalmente em razão da formação de martensita não revenida, a qual gera redução na tenacidade. Considerando as aplicações de reparo de turbinas hidráulicas, há grande interesse em desenvolver procedimentos de soldagem que elevem a tenacidade ao impacto e evitem os tratamentos térmicos pós-soldagem (TTPS. O presente trabalho busca analisar a influência da temperatura de interpasse na microestrutura, tenacidade ao impacto e propagação de trincas por fadiga nas uniões soldadas multipasse do aço inoxidável martensitico CA6NM usando AWS410NiMo como metal de adição, e processo TIG (tungsten inert gas. Observou-se a influência da temperatura de interpasse na formação de ferrita d, com formação intergranular no campo bifásico δ+γ, na amostra com temperatura interpasse de 80ºC, enquanto que na amostra soldada a 150ºC a formação de ferrita d ocorreu principalmente no campo monofásico. A alteração na formação da ferrita d, com a menor temperatura, promoveu um aumento na tenacidade ao impacto e uma diminuição na velocidade de propagação de trinca, quando comparada com a amostra soldada com maior temperatura de soldagem. Os resultados obtidos indicam que o processo TIG apresenta-se como uma excelente alternativa para o reparo do aço CA6NM, observando-se também uma influência significativa da temperatura de interpasse.Martensitic stainless steels have been used for hydraulic turbines manufacturing, because its high toughness. However, these steels have some restrictions regarding regions recovered by welding, mainly by non-tempered martensite formation, promoting toughness reduction. Concerning hydraulic turbine repairs, there is a great interest in welding procedures development that promotes a better toughness, without post welding heat treatment (PWHT. The mainly objective of this paper is analyze the influence of interpass temperature on the microstructure, impact toughness and fatigue crack propagation in CA6NM martensitic stainless steel multipass welded joints, with AWS410NiMo filler metal, with GTAW (gas tungsten arc welding. It was observed the interpass temperature influence on ferrite δ formation, observing intergranular ferrite d formation on the d+g field in 80 ºC interpass temperature, while the sample welded at 150 ºC the formation of ferrite d occurs mainly in the δ monophase field. Ferrite d formation with the lowest temperature interpass promoted an increase in impact toughness and a decrease in the fatigue crack propagation when compared with 150ºC interpass temperature sample. It was observed that GTAW process can be an excellent alternative for CA6NM hydraulic turbine repair, it was also observed a significant interpass temperature influence.

  5. Efeito da temperatura interpasse na microestrutura, tenacidade ao impacto e propagação de trinca por fadiga de uniões soldadas por GTAW do aço ASTM A743-CA6NM Interpass temperature influence on the microstructure, impact toughness and fatigue crack propagation in ASTM A743-CA6NM GTAW welded joints

    OpenAIRE

    Ruimar Rubens de Gouveia; Anderson Geraldo Marenda Pukasiewicz; André Ricardo Capra; Sérgio Luiz Henke; Paulo Cesar Okimoto

    2013-01-01

    Atualmente os aços inoxidáveis martensíticos tem sido utilizados para a fabricação de turbinas hidráulicas, devido principalmente a sua elevada tenacidade. Entretanto, estes aços apresentam algumas restrições com relação à regiões recuperadas por soldagem, principalmente em razão da formação de martensita não revenida, a qual gera redução na tenacidade. Considerando as aplicações de reparo de turbinas hidráulicas, há grande interesse em desenvolver procedimentos de soldagem que elevem a tenac...

  6. Estrutura e propriedades do aço inoxidável austenítico AISI 316L Grau ASTM F138 nitretado sob plasma à baixa temperatura Structure and properties of an austenitic stainless steel AISI 316L grade ASTM F138 after low temperature plasma nitriding

    Directory of Open Access Journals (Sweden)

    André Paulo Tschiptschin

    2010-03-01

    Full Text Available Os aços inoxidáveis austeníticos possuem restrições para a nitretação nas temperaturas convencionais, próximas de 550ºC, devido à precipitação intensa de nitretos de cromo na zona de difusão. Essa precipitação eleva a dureza, mas deteriora as propriedades de corrosão. O uso do processo de nitretação sob plasma permite introduzir nitrogênio em temperaturas inferiores a 450ºC, levando à formação de uma fina camada de austenita expandida pelo nitrogênio (gN. Essa fase possui uma estrutura cristalina mais bem representada pelo reticulado triclínico, com elevada concentração de nitrogênio em solução sólida supersaturada, a qual promove um estado de tensões residuais de compressão capaz de elevar a dureza do substrato de 4 GPa para valores próximos de 14 GPa. O Módulo de Elasticidade mantém-se próximo de 200 GPa após a nitretação.Austenitic stainless steels cannot be conventionally nitrided at temperatures near 550°C due to the intense precipitation of chromium nitrides in the diffusion zone. The precipitation of chromium nitrides increases the hardness but severely impairs corrosion resistance. Plasma nitriding allows introducing nitrogen in the steel at temperatures below 450°C, forming pre-dominantly expanded austenite (gN, with a crystalline structure best represented by a special triclinic lattice, with a very high nitrogen atomic concentration promoting high compressive residual stresses at the surface, increasing substrate hardness from 4 GPa up to 14 GPa on the nitrided case.

  7. Phase Transformation in Cast Superaustenitic Stainless Steels

    Energy Technology Data Exchange (ETDEWEB)

    Nathaniel Steven Lee Phillips

    2006-12-12

    Superaustenitic stainless steels constitute a group of Fe-based alloys that are compositionally balanced to have a purely austenitic matrix and exhibit favorable pitting and crevice corrosion resistant properties and mechanical strength. However, intermetallic precipitates such as sigma and Laves can form during casting or exposure to high-temperature processing, which degrade the corrosion and mechanical properties of the material. The goal of this study was to accurately characterize the solid-solid phase transformations seen in cast superaustenitic stainless steels. Heat treatments were performed to understand the time and temperature ranges for intermetallic phase formations in alloys CN3MN and CK3MCuN. Microstructures were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy and wavelength dispersive spectroscopy (EDS, WDS). The equilibrium microstructures, composed primarily of sigma and Laves within purely austenitic matrices, showed slow transformation kinetics. Factors that determine the extent of transformation, including diffusion, nucleation, and growth, are discussed.

  8. Energy Saving Melting and Revert Reduction (E-SMARRT): Optimization of Heat Treatments on Stainless Steel Castings for Improved Corrosion Resistance and Mechanical Properties

    Energy Technology Data Exchange (ETDEWEB)

    John N. DuPont; Jeffrey D. Farren; Andrew W. Stockdale; Brett M. Leister

    2012-06-30

    It is commonly believed that high alloy steel castings have inferior corrosion resistance to their wrought counterparts as a result of the increased amount of microsegregation remaining in the as-cast structure. Homogenization and dissolution heat treatments are often utilized to reduce or eliminate the residual microsegregation and dissolve the secondary phases. Detailed electron probe microanalysis (EPMA) and light optical microscopy (LOM) were utilized to correlate the amount of homogenization and dissolution present after various thermal treatments with calculated values and with the resultant corrosion resistance of the alloys.The influence of heat treatment time and temperature on the homogenization and dissolution kinetics were investigated using stainless steel alloys CN3MN and CK3MCuN. The influence of heat treatment time and temperature on the impact toughness and corrosion reistance of cast stainless steel alloys CF-3, CF-3M, CF-8, and CF-8M was also investigated.

  9. Laboratory testing of hemolytic properties of materials that come in contact with blood: Comparative application testing method’s two variants according to the standard ASTM F756 in accordance with ISO 10993-4

    Directory of Open Access Journals (Sweden)

    Pavlović Katarina B.

    2010-01-01

    Full Text Available The presence of hemolytic material in contact with blood may produce increased levels of blood cell lysis and increased levels of plasma hemoglobin. This may induce toxic effects or other effects which may stress the kidneys or other organs. In this paper two variants of in vitro method and obtained results’ comparison were presented for testing of hemolytic properties of six raw materials (Polipropylene Moplen EP 540 P, Policarbonate colorless 164 R-112, Policarbonate brown 164 R-51918, Polietylene NG 3026 K, Polietylene NG - Purell GB 7250, Polietylene VG - Hiplex 5502 for medical device manufacturing and one raw material (Polietylen NG granulate used for infusion solutions’s plastic bottles manufacturing. One of method’s variants relies on raw material direct contact with swine blood and the other on extract of the material contact with swine blood. Both method’s variants imply reading of the absorbance of the supernatant after tubes were incubated and centrifuged. According to values obtained and using the standard curve free hemoglobin concentration is determined and based on this percentage hemolysis of raw material. Positive and negative controls were used in both variants where water for injection (WFI was used as positive control in which partial or complete hemolysis of erythrocytes occurs due to osmotic shock and phosphate buffer saline was used as negative control with no hemolytic property. In this paper comparison of results obtained by both method’s variants for testing of seven raw materials was presented, while these conclusions can not be used neither for all materials, nor for all applications without preliminary testing using both variants and then choosing more sensitive and more reliable one. It was shown and stated in the paper as well that incubation time being 3, 15 or 24 h, had no impact on the variant’s with direct contact sensitivity. This comparative approach was used for drawing conclusions in terms of suitability for application of one or the other method’s variant, as well as for defining relevant incubation time and finally for choosing more sensitive and more reliable variant for assessment of hemolytic properties of raw materials. Variant with direct contact was chosen from the aspect of less complexity regarding necessary laboratory equipment which makes it economically more favorable and fit for the purpose.

  10. V&V methodology comparissons: AIAA G-077(1998), ASME V&V 20 (2009), ASTM E1355-05a(2005), NEA/CSNI/R(2007), and NRC CSAU(1988)

    International Nuclear Information System (INIS)

    The AIAA, ASME, NRC, NEA and NIST approaches to V&V are reviewed with emphasis on common elements and discussion of differences in intent. The AIAA, ASME, and NEA standards and guidelines apply specifically to CFD. The NIST standard as applicable to fire modeling using the Fire Dynamics Simulation (FDS) large eddy simulation CFD code as adopted by the USNRC is reviewed. The CSAU methodology was developed for reactor system simulations during anticipated transients and hypothetical accidents. CSAU is well established in the US nuclear safety community for providing best estimate simulation outcomes, with quantified uncertainties for prescribed confidence intervals. (author)

  11. Test Methods for Vertebrate Pest Control and Management Materials. A Symposium Sponsored by ASTM Committee E-35 on Pesticides, American Society for Testing and Materials, Monterey, California, March 8, 1976.

    Science.gov (United States)

    Jackson, W. B., Ed.; Marsh, R. E., Ed.

    The first symposium on "Test Methods for Vertebrate Pest Management" was held in March, 1976. Much of the thrust was toward explaining and defining the "state of the art." Concerns included rodents and rabbits, predators, scavengers, and large game animals, and a variety of bird species. Environments were as restricted as a laboratory cage or pen…

  12. 78 FR 73692 - Revisions to Safety Standards for Infant Bath Seats, Toddler Beds, and Full-Size Baby Cribs

    Science.gov (United States)

    2013-12-09

    ...)); toddler beds (76 FR 22030 (April 20, 2011)); and full-size cribs (75 FR 81789 (December 28, 2010)). The... to make the standard more stringent. (75 FR 31691). On May 16, 2012, ASTM notified the CPSC that ASTM... FR 4542 (July 31, 2012). Subsequently, ASTM notified us on September 25, 2013, that ASTM has...

  13. 77 FR 38523 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe...

    Science.gov (United States)

    2012-06-28

    ....standardmethods.org .) ASTM International. 1999. ASTM D1179-99 B. Standard Test Methods for Fluoride Ion in Water... International. 2010b. ASTM D1179-10 B. Standard Test Methods for Fluoride Ion in Water. ASTM International, 100... SPADNS 2 (Arsenic-free) Fluoride Method 10225--Spectrophotometric Measurement of Fluoride in Water......

  14. 27 CFR 30.24 - Specific gravity hydrometers.

    Science.gov (United States)

    2010-04-01

    ... conform to the standard specifications of the American Society for Testing and Materials (ASTM) for such...) Incorporation by reference. The “Standard Specification for ASTM Hydrometers,” (E 100-72 (1978)), published in the “1980 Annual Book of ASTM Standards” (STP 25 1062 (1980)), is incorporated by reference in...

  15. 76 FR 58167 - Safety Standard for Play Yards

    Science.gov (United States)

    2011-09-20

    ..., lost their balance, and fell. ASTM F 406-11 does include product warnings that address the need to..., ``Standard Consumer Safety Specification for Non-Full-Size Baby Cribs/Play Yards'' (``ASTM F 406- 11''). The... establish ASTM F 406-11, ``Standard Consumer Safety Specification for Non-Full-Size Baby Cribs/ Play...

  16. 76 FR 54218 - Third Party Testing for Certain Children's Products; Toys: Requirements for Accreditation of...

    Science.gov (United States)

    2011-08-31

    ... does not need to incorporate ASTM F 963 by reference. We also note that certain provisions of ASTM F... F 963-07e1 version of the standard (``ASTM F 963-07e1''), which are the consumer product safety... F 963-07 shall be considered a consumer product safety standard issued by the Commission...

  17. 77 FR 45242 - Revisions to Safety Standards for Durable Infant or Toddler Products: Infant Bath Seats and Full...

    Science.gov (United States)

    2012-07-31

    ... stringent. 75 FR 31691. ASTM notified us that the current version of the ASTM standard for infant bath seats..., with two modifications to ] make the standard more stringent. 75 FR 81766. ASTM notified us that the..., family child care homes, and places of public accommodation. 75 FR 81786-87. The crib rule...

  18. 40 CFR 94.108 - Test fuels.

    Science.gov (United States)

    2010-07-01

    ... the ultra low-sulfur diesel test fuel specified in 40 CFR part 1065. (b) Other fuel types. For... Distillation Range: Initial boiling point, °C ASTM D 86-01 171-204 10% point, °C ASTM D 86-01 204-238 50% point, °C ASTM D 86-01 243-282 90% point, °C ASTM D 86-01 293-332 End point, °C ASTM D 86-01...

  19. Performance Concept in Buildings. Volume 1: Invited Papers. Proceedings of a Symposium Jointly Sponsored by the International Union of Testing and Research Laboratories for Materials and Structures (RILEM), the American Society for Testing and Materials (ASTM), and the International Council for Building Research Studies and Documentation (CIB) (Philadelphia, Pennsylvania, May 2-5, 1972).

    Science.gov (United States)

    Foster, Bruce E., Ed.

    Volume 1 contains all the invited papers accepted for the symposium. The subject matter covered in the papers includes physiological, anthropometrical, psychological, sociological, and economic human requirements and methods of evaluation; physical requirements and methods of evaluation in mechanical, acoustical, thermal, dimensional stability,…

  20. 对GB/T 13096.2-1991中弓形试样截面惯性矩计算公式的再讨论%Re-discussion of the Calculating Formula of Moment of Inertia for Bow-Shaped Test Piece in GB/T 13096.2-1991

    Institute of Scientific and Technical Information of China (English)

    马林泉; 李秋

    2009-01-01

    本文认为GB/T 13096.2-1991及 ASTM D4476-85 、ASTM D4476-97 、ASTM D4476-03中计算弓形试样截面惯性矩的公式均有误,同时给出纠正后的计算公式,并与2001年公开报道的公式及美国ASTM D4476-03中的计算公式进行了比较.结果表明,纠正后的计算公式与2001年公开报道的公式计算结果相近,而与ASTM D4476-85及 ASTM D4476-03中的计算公式计算结果相差较大.

  1. Standard Guide for Absorbed-Dose Mapping in Radiation Processing Facilities

    CERN Document Server

    American Society for Testing and Materials. Philadelphia

    2003-01-01

    1.1 This document provides guidance in determining absorbed-dose distributions in products, materials or substances irradiated in gamma, X-ray (bremsstrahlung) and electron beam facilities. Note 1—For irradiation of food and the radiation sterilization of health care products, other specific ISO and ISO/ASTM standards containing dose mapping requirements exist. For food irradiation, see ISO/ASTM 51204, Practice for Dosimetry in Gamma Irradiation Facilities for Food Processing and ISO/ASTM 51431, Practice for Dosimetry in Electron and Bremsstrahlung Irradiation Facilities for Food Processing. For the radiation sterilization of health care products, see ISO 11137: 1995, Sterilization of Health Care Products Requirements for Validation and Routine Control Radiation Sterilization. In those areas covered by ISO 11137, that standard takes precedence. ISO/ASTM Practice 51608, ISO/ASTM Practice 51649, and ISO/ASTM Practice 51702 also contain dose mapping requirements. 1.2 Methods of analyzing the dose map data ar...

  2. 49 CFR 179.102-4 - Vinyl fluoride, stabilized.

    Science.gov (United States)

    2010-10-01

    ... paragraph (a)(1) or (a)(2) of this section. (1) Stainless steel, ASTM A 240/A 240M (IBR, see § 171.7 of this... with ASTM Specification A 516 (IBR, see § 171.7 of this subchapter); Grade 70; ASTM Specification A 537 (IBR, see § 171.7 of this subchapter), Class 1; or AAR Specification TC 128, Grade B, in which...

  3. 40 CFR Table 6 to Subpart Ddddd of... - Fuel Analysis Requirements

    Science.gov (United States)

    2010-07-01

    ... samples * * * Procedure in § 63.7521(c) or ASTM D2234-D2234M-03 (for coal) (IBR, see § 63.14(b)) or ASTM D6323-98 (2003) (for biomass) (IBR, See § 63.14(b)) or equivalent. b. Composite fuel samples... samples) or SW-846-3020A (for liquid samples) or ASTM D2013-04 (for coal) (IBR, see § 63.14(b)) or...

  4. Properties of Concrete with Tire Derived Aggregate Partially Replacing Coarse Aggregates

    OpenAIRE

    Gideon Siringi; Ali Abolmaali; Aswath, Pranesh B.

    2015-01-01

    Tire derived aggregate (TDA) has been proposed as a possible lightweight replacement for mineral aggregate in concrete. The role played by the amount of TDA replacing coarse aggregate as well as different treatment and additives in concrete on its properties is examined. Conventional concrete (without TDA) and concrete containing TDA are compared by examining their compressive strength based on ASTM C39, workability based on ASTM C143, splitting tensile strength based on ASTM C496, modulus of...

  5. USING LABORATORY TESTS TO PREDICT OXIDATION IN TODAY'S ENGINES

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    Laboratory bench tests are used to predict lubricant performance in modern engines. The evolution of ASTM (American Society of Testing and Materials) engine Sequence tests and associated laboratory bench tests is reviewed. Several oxidation screening tests are described. Correlation of oxidation screening tests with ASTM Sequence Ⅲ high temperature oxidation engine test is addressed, using both European and ASTM reference oils. Modification of the oxidation screening test methods is attempted in order to improve the correlation as the Sequence Ⅲ test method evolves.

  6. Task group to develop list of environmental standards

    Science.gov (United States)

    A new task group designed to develop a list of existing and potential standards that are applicable to environmental contamination problems in soil, rock, and groundwater has been established by the American Society for Testing a n d Materials (ASTM) Subcommittee on Geotechnics of Waste Management. The list currently includes over 60 existing and draft ASTM standards from ASTM committees in the areas of site characterization, construction evaluation, and geosynthetics.

  7. Halduskohtumenetluse seadustiku eelnõu olulisematest muudatustest menetluses / Kalle Merusk

    Index Scriptorium Estoniae

    Merusk, Kalle, 1949-

    1998-01-01

    Protsessiosalistest, esimese astme menetlusest (sh. tuvastus- ja otsustusmenetlus), apellatsioonimenetlusest, kohtukuludest ning kohtulahendi täitmisest vastavalt halduskohtumenetluse seadustiku eelnõule

  8. Esimest korda Eestis - kokk III eksam!

    Index Scriptorium Estoniae

    2009-01-01

    Restorani Dominic peakokk Rudolf Visnapuu ja presidendi kantselei peakokk Indrek Kivisalu sooritasid 7. mail 2009. a. restoranis Dominic esimest korda Eestis kokkade kutsestandardi viimase astme eksami

  9. The Chemical Composition and Physical Properties of the Light and Heavy Tar Resulted from Coconut Shell Pyrolysis

    OpenAIRE

    Uswatun Hasanah; Bambang Setiaji3); Triyono Triyono; Chairil Anwar

    2012-01-01

    The tar resulted from pyrolysis of coconut shell is a waste. It is important to be clarified their chemical composition and physical properties in order to find out their feasibility as source of a fuel. This research was resulted two immiscible organic fractions, and these were further determined their physical properties such as water composition by using ASTM D-95 methods, ash composition (ASTM D-482), flash point C.O.C (ASTM D-92), kinematics of viscosity (ASTM D-445), and caloric valued ...

  10. Õigusstatistika [1995] = Justice

    Index Scriptorium Estoniae

    1996-01-01

    Statistilised tabelid: politseis registreeritud kuriteod; politseis registreeritud kuriteod jaoskonniti, 1995; kuritegude avastamine; esimese astme kohtute poolt kriminaalkuritegudes süüdimõistetute arv

  11. 24 CFR 3280.706 - Oil piping systems.

    Science.gov (United States)

    2010-04-01

    ... described in § 3280.706(b) (1) through (4). (1) Steel or wrought-iron pipe shall comply with ANSI B 36.10-1979, Welded and Seamless Wrought Steel Pipe. Threaded copper or brass pipe in iron pipe sizes may be... the Standard Specification for Seamless Copper Water Tube, ASTM B88-93, or shall comply with ASTM...

  12. 24 CFR 3280.604 - Materials.

    Science.gov (United States)

    2010-04-01

    .... Welding and Seamless Wrought Steel Pipe—ANSI/ASME B36.10-1979. Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless—ASTM A53-93. Pipe Threads, General Purpose (Inch... Seamless Copper Pipe, Standard Sizes—ASTM B42-93. Standard Specification for General Requirements...

  13. 78 FR 63164 - Certain Small Diameter Carbon and Alloy Seamless Standard, Line and Pressure Pipe From Romania...

    Science.gov (United States)

    2013-10-23

    .... Specifically included within the scope are seamless pipes and redraw hollows, less than or equal to 4.5 inches... for fire protection uses (ASTM A-795) are used for the conveyance of water. Seamless pipes are... the subject seamless pipes. However, ASTM A-106 pipes may be used in some boiler applications....

  14. 76 FR 62762 - Certain Large Diameter Carbon and Alloy Seamless Standard, Line and Pressure Pipe From Japan...

    Science.gov (United States)

    2011-10-11

    ... this order are seamless pipes greater than 4.5 inches (114.3 mm) up to and including 16 inches (406.4... finish. The seamless pipes subject to this order are currently classifiable under the subheadings 7304.10.... Seamless pipes are commonly produced and certified to meet ASTM A- 106, ASTM A-53, API 5L-B, and API...

  15. 75 FR 38781 - Certain Large Diameter Carbon and Alloy Seamless Standard, Line, and Pressure Pipe From Japan...

    Science.gov (United States)

    2010-07-06

    .... Specifically included within the scope of this review are seamless pipes greater than 4.5 inches (114.3 mm) up... threaded and coupled), or surface finish. The seamless pipes subject to this review are currently.... Seamless pipes are commonly produced and certified to meet ASTM A- 106, ASTM A-53, API 5L-B, and API...

  16. 77 FR 13079 - Certain Large Diameter Carbon and Alloy Seamless Standard, Line, and Pressure Pipe (Over 41/2

    Science.gov (United States)

    2012-03-05

    .... Specifically included within the scope of the order are seamless pipes greater than 4.5 inches (114.3 mm) up to... and coupled), or surface finish. The seamless pipes subject to the order are currently classifiable.... Seamless pipes are commonly produced and certified to meet ASTM A- 106, ASTM A-53, API 5L-B, and API...

  17. 75 FR 8575 - Testing of Certain High Production Volume Chemicals; Third Group of Chemicals

    Science.gov (United States)

    2010-02-25

    ...). Method B (ASTM E 1147-92(2005)--liquid chromatography) (Ref. 20). Method C (40 CFR 799.6756--generator... Method B: ASTM E or C. 1147-92(2005) log Kow range > 4- (liquid 6: Method B or C. chromatography). log... substances, benzene, 1,2-dimethyl-3-nitro-acetaldehyde (CAS No. 83-41-0); tar oils, coal (CAS No....

  18. 40 CFR 98.144 - Monitoring and QA/QC requirements.

    Science.gov (United States)

    2010-07-01

    ... certified laboratory using ASTM D3682-01 (Reapproved 2006) Standard Test Method for Major and Minor Elements... standard. This chemical analysis must be conducted using an x-ray fluorescence test or other enhanced testing method published by an industry consensus standards organization (e.g., ASTM, ASME, API, etc.)....

  19. 40 CFR 80.46 - Measurement of reformulated gasoline fuel parameters.

    Science.gov (United States)

    2010-07-01

    ... Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization Detection, approved November 1, 2005... documents listed in this section as prescribed in 5 U.S.C. 552(a) and 1 CFR 51. Anyone may inspect copies at... Electrochemical Detection, approved December 1, 2007. (xiii) ASTM standard method D3120-06 1 (“ASTM...

  20. American Society for Testing and Materials

    CERN Document Server

    ASTM is a not-for-profit organization that provides a forum for the development and publication of voluntary consensus standards for materials, products, systems and services. ASTM develops standard test methods, specifications, practices, guides, classifications, and terminology in 130 areas covering subjects such as metals, paints, plastics, textiles, petroleum, construction, energy, the environment, computerized systems, consumer products, electronics, and many others.

  1. 21 CFR 177.1430 - Isobutylene-butene copolymers.

    Science.gov (United States)

    2010-04-01

    ...-78, “Standard Test Method for Bromine Index of Aromatic Hydrocarbons by Coulometric Titration,” which... Materials (ASTM) method D2503-82, “Standard Test Method for Molecular Weight (Relative Molecular Mass) of... determined by ASTM method D445-74, “Test for Kinematic Viscosity of Transparent and Opaque Liquids,” which...

  2. 78 FR 21850 - Federal Motor Vehicle Safety Standards; Matters Incorporated by Reference

    Science.gov (United States)

    2013-04-12

    ... E274/E274M-11, ``Standard Test Method for Skid Resistance of Paved Surfaces Using a Full-Scale Tire... reference. * * * * * (d) * * * (28) ASTM E274-65T, ``Tentative Method of Test for Skid Resistance of... No. 301, Fuel System Integrity, reference ASTM E274-65T, ``Tentative Method of Test for...

  3. 7 CFR 1755.370 - RUS specification for seven wire galvanized steel strand.

    Science.gov (United States)

    2010-01-01

    ...(a) and 1 CFR part 51 on January 19, 1990). Copies of ASTM A475-78 are available for inspection... strand. 1755.370 Section 1755.370 Agriculture Regulations of the Department of Agriculture (Continued... steel strand. (a) RUS incorporates by reference ASTM A475-78, Standard Specification for...

  4. 76 FR 55890 - Nationwide Categorical Waivers Under Section 1605 (Buy American) of the American Recovery and...

    Science.gov (United States)

    2011-09-09

    ..., Ends: flanged, Seats: PTFE or TFE; ASTM A126); (2) Low Temperature Thermostat (range of 15-55... (Standard: Mss SP-72, CWP Rating: 200 psig, Ends: flanged, Seats: PTFE or TFE; ASTM A126); (2) Low... SP-72, CWP Rating: 200 psig, Ends: Flanged, Seats: PTFE or TFE). Neither MEP nor DOE was able...

  5. Mechanical properties of porous, electrosprayed calcium phosphate coatings

    NARCIS (Netherlands)

    Leeuwenburgh, S.C.G.; Wolke, J.G.C.; Lommen, L.; Pooters, T.; Schoonman, J.; Jansen, J.A.

    2006-01-01

    Mechanical properties of calcium phosphate coatings (CaP), deposited using the electrostatic spray deposition (ESD) technique, have been characterized using a range of analytical techniques, including tensile testing (ASTM C633), fatigue testing (ASTM E855), and scratch testing using blunt and sharp

  6. Methods to Use Surface Infiltration Tests in Permeable Pavement Systems to Determine Maintenance Frequency

    Science.gov (United States)

    Currently, there is limited guidance on selecting test sites to measure surface infiltration rates in permeable pavement systems to determine maintenance frequency. The ASTM method (ASTM C1701) for measuring infiltration rate of in-place pervious concrete suggest to either (1) p...

  7. Evaluation of Surface Infiltration Testing Procedures in Permeable Pavement Systems

    Science.gov (United States)

    The ASTM method (ASTM C1701) for measuring infiltration rate of in-place pervious concrete provides limited guidance on how to select testing locations, so research is needed to evaluate how testing sites should be selected and how results should be interpreted to assess surface ...

  8. 46 CFR 160.055-3 - Materials-standard life preservers.

    Science.gov (United States)

    2010-10-01

    ... requirements in Table 160.055-3(j): Table 160.055-3(j) Property Test method Requirement Tensile strength ASTM... hours at 221 °F 8 percent, maximum. Adhesion to foam—Tensile pull ASTM-D413, machine method, 12 in. per... Foam, Adult and Child, for Merchant Vessels § 160.055-3 Materials—standard life preservers. (a)...

  9. 40 CFR 761.19 - References.

    Science.gov (United States)

    2010-07-01

    ... (ASTM), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. References CFR Citation ASTM D 93 - 90... 40 Protection of Environment 30 2010-07-01 2010-07-01 false References. 761.19 Section 761.19... § 761.19 References. (a) (b) Incorporation by reference. The following material is incorporated...

  10. 78 FR 37706 - Safety Standards for Infant Walkers and Infant Swings

    Science.gov (United States)

    2013-06-24

    ... for Infant Walkers, with 22 modifications to make the standard more stringent. 75 FR 35266. ASTM... assessment bodies for testing infant walkers (75 FR 35282 (June 21, 2010)) and infant swings (78 FR 15836..., with two modifications to make the standard more stringent. 77 FR 66703. ASTM notified CPSC that...

  11. 78 FR 32558 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe...

    Science.gov (United States)

    2013-05-31

    ... Water Act; Analysis and Sampling Procedures. 74 FR 38348. August 3, 2009. USEPA. 2013. EPA Method 524.4.... Fluoride. B. Preliminary Distillation Step. C. Ion-Selective Electrode Method. D. SPADNS Method. E.... ASTM D516-02. Standard Test Method for Sulfate Ion in Water. ASTM International, 100 Barr Harbor...

  12. Properties of Concrete with Tire Derived Aggregate Partially Replacing Coarse Aggregates

    Directory of Open Access Journals (Sweden)

    Gideon Siringi

    2015-01-01

    Full Text Available Tire derived aggregate (TDA has been proposed as a possible lightweight replacement for mineral aggregate in concrete. The role played by the amount of TDA replacing coarse aggregate as well as different treatment and additives in concrete on its properties is examined. Conventional concrete (without TDA and concrete containing TDA are compared by examining their compressive strength based on ASTM C39, workability based on ASTM C143, splitting tensile strength based on ASTM C496, modulus of rupture (flexural strength based on ASTM C78, and bond stress based on ASTM C234. Results indicate that while replacement of coarse aggregates with TDA results in reduction in strength, it may be mitigated with addition of silica fume to obtain the desired strength. The greatest benefit of using TDA is in the development of a higher ductile product while utilizing recycled TDA.

  13. Current and future neutron radiography standards

    International Nuclear Information System (INIS)

    Only two organizations are actively producing standards which are used in neutron radiology (NR): the American Society of Testing and Materials (ASTM) and the International Organization for Standardization (ISO). Six ASTM standards exist that address the neutron radiography method. Two of the ASTM standards have been extensively used world-wide. ISO has a working group which is developing three standards that also address the neutron radiography method. Two of these are currently making their way through the ISO approval system. No ASTM or ISO standards exist for the neutron radioscopic method. Future ASTM standards will address the neutron radioscopic method and neutron radiologic system characterization. It is expected that similar efforts will be undertaken in ISO. Given the relatively small community providing neutron radiologic services, international cooperation and the need for ISO standards will most likely continue to grow.(author)

  14. Final Report, Volume 2, The Development of Qualification Standards for Cast Duplex Stainless Steel

    Energy Technology Data Exchange (ETDEWEB)

    Russell, Steven, W.; Lundin, Carl, D.

    2005-09-30

    The scope of testing cast Duplex Stainless Steel (DSS) required testing to several ASTM specifications, while formulating and conducting industry round robin tests to verify and study the reproducibility of the results. ASTM E562 (Standard Test Method for Determining Volume Fraction by Systematic manual Point Count) and ASTM A923 (Standard Test Methods for Detecting Detrimental Intermetallic Phase in Wrought Duplex Austenitic/Ferritic Stainless Steels) were the specifications utilized in conducting this work. An ASTM E562 industry round robin, ASTM A923 applicability study, ASTM A923 industry round robin, and an ASTM A923 study of the effectiveness of existing foundry solution annealing procedures for producing cast DSS without intermetallic phases were implemented. In the ASTM E562 study, 5 samples were extracted from various cast austenitic and DSS in order to have varying amounts of ferrite. Each sample was metallographically prepared by UT and sent to each of 8 participants for volume fraction of ferrite measurements. Volume fraction of ferrite was measured using manual point count per ASTM E562. FN was measured from the Feritescope{reg_sign} and converted to volume fraction of ferrite. Results indicate that ASTM E562 is applicable to DSS and the results have excellent lab-to-lab reproducibility. Also, volume fraction of ferrite conversions from the FN measured by the Feritescope{reg_sign} were similar to volume fraction of ferrite measured per ASTM E562. In the ASTM A923 applicability to cast DSS study, 8 different heat treatments were performed on 3 lots of ASTM A890-4A (CD3MN) castings and 1 lot of 2205 wrought DSS. The heat treatments were selected to produce a wide range of cooling rates and hold times in order to study the suitability of ASTM A923 to the response of varying amounts on intermetallic phases [117]. The test parameters were identical to those used to develop ASTM A923 for wrought DSS. Charpy V-notch impact samples were extracted from the

  15. Final Report, Volume 2, The Development of Qualification Standards for Cast Duplex Stainless Steel

    Energy Technology Data Exchange (ETDEWEB)

    Russell, Steven, W.; Lundin, Carl, W.

    2005-09-30

    The scope of testing cast Duplex Stainless Steel (DSS) required testing to several ASTM specifications, while formulating and conducting industry round robin tests to verify and study the reproducibility of the results. ASTM E562 (Standard Test Method for Determining Volume Fraction by Systematic manual Point Count) and ASTM A923 (Standard Test Methods for Detecting Detrimental Intermetallic Phase in Wrought Duplex Austenitic/Ferritic Stainless Steels) were the specifications utilized in conducting this work. An ASTM E562 industry round robin, ASTM A923 applicability study, ASTM A923 industry round robin, and an ASTM A923 study of the effectiveness of existing foundry solution annealing procedures for producing cast DSS without intermetallic phases were implemented. In the ASTM E562 study, 5 samples were extracted from various cast austenitic and DSS in order to have varying amounts of ferrite. Each sample was metallographically prepared by UT and sent to each of 8 participants for volume fraction of ferrite measurements. Volume fraction of ferrite was measured using manual point count per ASTM E562. FN was measured from the Feritescope® and converted to volume fraction of ferrite. Results indicate that ASTM E562 is applicable to DSS and the results have excellent lab-to-lab reproducibility. Also, volume fraction of ferrite conversions from the FN measured by the Feritescope® were similar to volume fraction of ferrite measured per ASTM E562. In the ASTM A923 applicability to cast DSS study, 8 different heat treatments were performed on 3 lots of ASTM A890-4A (CD3MN) castings and 1 lot of 2205 wrought DSS. The heat treatments were selected to produce a wide range of cooling rates and hold times in order to study the suitability of ASTM A923 to the response of varying amounts on intermetallic phases [117]. The test parameters were identical to those used to develop ASTM A923 for wrought DSS. Charpy V-notch impact samples were extracted from the castings and wrought

  16. Síntesis de espumas rígidas de poliuretano obtenidas a partir de aceite de castor y poliglicerol empleando calentamiento por microondas Synthesis of rigid polyurethane foams obtained from castor oil and polyglycerol using microwave heating

    Directory of Open Access Journals (Sweden)

    Paula Mazo

    2011-01-01

    Full Text Available En este trabajo se realizó la síntesis de espumas rígidas de poliuretano utilizando un macropoliol sintetizado a partir de aceite de castor y poliglicerol, se optimizó mediante un análisis de superficie de respuesta, empleando un diseño factorial 32, los factores evaluados fueron: cantidad de agua y de ácido tartárico, el cual actúa como agente entrecruzante y catalizador; se evalúaron las propiedades mecánicas de las espumas como: densidad aparente (ASTM D1622-08, resistencia a la compresión (ASTM D1621, conductividad térmica (ASTM C177-04 y friabilidad (ASTM C421-8; se realizó Microscopia Electrónica de Barrido (SEM y Análisis de Calorimetría Diferencial de Barrido (DSC. El macropoliol fue obtenido desde fuentes renovables, mediante la transesterificación de Aceite de Castor (CO ó Aceite de Castor Maleinizado (MACO con Poliglicerol (PG. Se evalúo el efecto de las microondas en las reacciones, donde se encuentra una disminución del tiempo; el seguimiento y la caracterización de los productos intermedios se realiza mediante la cuantificación de valor ácido por titulación (ASTM D4662-03 y número de hidroxilos (ASTM D4274-05.In this work we showed the polyurethane rigid foams synthesis using a macropolyol synthesized from castor oil and polyglycerol. This process is optimized employing a response surface analysis and using a 3² factorial design. The factors evaluated were: amount of water and tartaric acid, where tartaric acid acts as crosslinking agent and catalyst; mechanical properties of foams were evaluated as bulk density (ASTM D1622-08, compressive strength (ASTM D1621, thermal conductivity (ASTM C177-04, and friability (ASTM C421-8; scanning electronic microscopic (SEM and differential scanning calorimetry (DSC. The macropolyol was obtained from renewable sources by the transesterification of castor oil (CO or maleinized castor oil (MACO and polyglycerol (PG. The effect of microwaves on the reactions was

  17. STA 449 F3 Jupiter

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    新型STA 449 F3 Jupiter能够对一个样品同时进行热重分析(TG)和差示扫描量热分析(DSC)。完全符合所有TG与DSC系统的测试与应用标准,包括:ISO11357,ISO11358,ASTME967,ASTME968,ASTME793,ASTMD3895,DINS1004,DIN51006,DTN 51007。

  18. Guide for use of radiation-sensitive indicators. 2. ed.

    International Nuclear Information System (INIS)

    This guide covers the use of radiation-sensitive indicators in radiation processing. These indicators may be labels, papers, inks or packaging materials which undergo a color change or become colored when exposed to ionizing radiation. The purpose of these indicators is to determine visually whether or not a product has been irradiated, rather than to measure different dose levels. Such materials are not dosimeters and should not be used as a substitute for proper dosimetry. Information about dosimetry systems for ionizing radiation is provided in other ASTM and ISO/ASTM documents (see ISO/ASTM Guide 51261

  19. Sol-gel coatings for protection and bioactivation of metals used in orthopaedic devices

    OpenAIRE

    Durán, A; Conde, A. (Ana); Gómez Coedo, Aurora; Dorado, Teresa,; Garcia, C.; Ceré, S.

    2004-01-01

    The aim of this work is the production and characterisation of sol-gel coatings for protection and bioactivation of metals used as standard surgical implant materials, such as stainless steel 316 L (ASTM F138), Co based alloys (ASTM F75) and titanium alloy Ti-6A1-4V (ASTM F67). These films should both prevent degradation of the substrates by wear or corrosion, and bioactivate the material for inducing the formation of a hydroxyapatite (HA) rich layer onto the material surface, thereby permitt...

  20. Soils Project Risk-Based Corrective Action Evaluation Process with ROTC 1 and ROTC 2, Revision 0

    Energy Technology Data Exchange (ETDEWEB)

    Matthews, Patrick; Sloop, Christina

    2012-04-01

    This document formally defines and clarifies the NDEP-approved process the NNSA/NSO Soils Activity uses to fulfill the requirements of the FFACO and state regulations. This process is used to establish FALs in accordance with the risk-based corrective action (RBCA) process stipulated in Chapter 445 of the Nevada Administrative Code (NAC) as described in the ASTM International (ASTM) Method E1739-95 (NAC, 2008; ASTM, 1995). It is designed to provide a set of consistent standards for chemical and radiological corrective actions.

  1. Properties of Combustion Gases

    Science.gov (United States)

    Wear, J. D.; Jones, R. E.; Trout, A. M.; Mcbride, B. J.

    1986-01-01

    New series of reports: First report lists data from combustion of ASTM Jet A fuel and dry air; second report presents tables and figures for combustion-gas properties of natural-gas fuel and dry air, and equivalent ratios.

  2. 46 CFR 56.01-10 - Plan approval.

    Science.gov (United States)

    2010-10-01

    ... GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) MARINE ENGINEERING PIPING SYSTEMS AND APPURTENANCES.... (b) Piping materials and appliances, such as pipe, tubing, fittings, flanges, and valves, except... pipe diameters, wall thicknesses, design pressure, fluid temperature, applicable ASTM material or...

  3. Results of the 2007 B100 Quality Survey

    Energy Technology Data Exchange (ETDEWEB)

    Alleman, T. L.; McCormick, R. L.

    2008-03-01

    In a 2007 analysis of samples from 52% of U.S. biodiesel (B100) producers, 90% met ASTM and other specifications for critical engine performance properties and for elements that harm emission controls.

  4. 46 CFR 164.008-3 - Testing procedure.

    Science.gov (United States)

    2010-10-01

    ... to approximately constant weight with the air being maintained at a relative humidity of 40 to 70... further definition of the time-temperature curve, see Appendix I of the ASTM Standard E119, “Fire Tests...

  5. 78 FR 47703 - Food and Drug Administration Modernization Act of 1997: Modifications to the List of Recognized...

    Science.gov (United States)

    2013-08-06

    ... notice published in the Federal Register of February 25, 1998 (63 FR 9561), FDA announced the........... 11-255 ASTM F1717-13 Withdrawn and Standard Test replaced with Methods for Spinal a newer...

  6. Final Report, Volume 3, Guidance Document for the Evaluation of Cast Super Duplex Stainless Steel

    Energy Technology Data Exchange (ETDEWEB)

    Hariharan, Vasudevan; Lundin, Carl, W.

    2005-09-30

    Volume 3 is comprised of the Development of Qualification Standards for Cast Super Duplex Stainless Steel (A890-5A) which is equivalent to wrought 2507. The objective of this work was to determine the suitability of ASTM A923 Standard Test methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic-Ferritic Stainless Steels for 25 Cr Cast Super Duplex Stainless Steels (ASTM A890-5A). The various tests which were carried out were ASTM A923 Test Method A, B and C (Sodium Hydroxide Etch Test, Charpy Impact Test and Ferric Chloride Corrosion Test), ferrite measurement using Feritscope®, ASTM E562 Manual Point Count Method and X-Ray Diffraction, hardness measurement using Rockwell B and C and microstructural analysis using SEM and EDS.

  7. Final Report, Volume 3, Guidance Document for the Evaluation of Cast Super Duplex Stainless Steel

    Energy Technology Data Exchange (ETDEWEB)

    Hariharan, Vasudevan; Lundin, Carl, D.

    2005-09-30

    Volume 3 comprises of the Development of Qualification Standards for Cast Super Duplex Stainless Steel (A890-5A) which is equivalent to wrought 2507. The objective of this work was to determine the suitability of ASTM A923 Standard Test methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic-Ferritic Stainless Steels for 25 Cr Cast Super Duplex Stainless Steels (ASTM A890-5A). The various tests which were carried out were ASTM A923 Test Method A, B and C (Sodium Hydroxide Etch Test, Charpy Impact Test and Ferric Chloride Corrosion Test), ferrite measurement using Feritscope{reg_sign}, ASTM E562 Manual Point Count Method and X-Ray Diffraction, hardness measurement using Rockwell B and C and microstructural analysis using SEM and EDS.

  8. 21 CFR 177.1950 - Vinyl chloride-ethylene copolymers.

    Science.gov (United States)

    2010-04-01

    ... deciliter per gram as determined by ASTM method D1243-79, “Standard Test Method for Dilute Solution... nitrate using standard potentiometric titration techniques with a silver electrode as indicator and...

  9. 78 FR 63019 - Safety Standard for Bassinets and Cradles

    Science.gov (United States)

    2013-10-23

    ... on the product's function. For instance, ASTM standards include a handheld carrier standard, an... Commission recognizes that some manufacturers will be required to redesign, test new prototype products, and... information in supporting educational materials and product advertisements. Response: Although CPSC...

  10. Microstructural evolution and response to double-loop reactivation testing of heat-treated PH 13-8 Mo martensitic stainless steel

    International Nuclear Information System (INIS)

    Compared to the austenitic stainless steels, relatively few studies have been reported of the intergranular corrosion suceptibility of martensitic stainless steels, particularly those containing 0.05 corresponds to a ditch structure in ASTM A 262-A (oxalic acid)

  11. Joonatani triloogia : Joonatani teekond; Joonatani öö; Joonatani armastus / Karl Ristikivi

    Index Scriptorium Estoniae

    Ristikivi, Karl, 1912-1977

    1996-01-01

    Arvustus: Kangro, Bernard. Joonatan, kadunud veli. Lund : Eesti Kirjanike Kooperatiiv, 1971; Kangro, Bernard. Öö astmes X. Lund : Eesti Kirjanike Koopeatiiv, 1973; Kangro, Bernard. Puu saarel on alles. Lund : Eesti Kirjanike Kooperatiiv, 1973

  12. 低ラムダ条件での転動疲労のメカニズと転動疲労試験の寿命データの解析に関する研究

    OpenAIRE

    藤田, 工

    2016-01-01

    要旨Abstract 以下に掲載:1.Journal of ASTM International ASTM STP 1524,7 pp.179-198 2010. ASTM. 共著者:T.Fujita 2.トライボロジスト 59(10) pp.667 2014. 日本トライボロジー学会. 共著者:藤田工,佐々木敏彦 3.トライボロジスト 60(11) pp.741-751 2015. 日本トライボロジー学会. 共著者:藤田工,長谷川直哉,嘉村直哉,佐々木敏彦 4.Material performance and characterization 5 pp.23-36 2016. ASTM. 共著者:T. Fujita, N. Kamura, Y. Maruyama and T. Sasaki...

  13. 78 FR 77427 - Proposed Information Collection; Comment Request; Building for Environmental and Economic...

    Science.gov (United States)

    2013-12-23

    ... performance of building products. Known as BEES (Building for Environmental and Economic Sustainability), the..., installation, use, and recycling and waste management. Economic performance is measured using the ASTM... for Environmental and Economic Sustainability (BEES) Please AGENCY: National Institute of...

  14. Integrirovanije urokov estetitsheskogo tsokla na I-oi shkolnoi stupeni / Viktorija Frolenkova

    Index Scriptorium Estoniae

    Frolenkova, Viktorija

    2003-01-01

    Loominguliste ainete põimimisest põhiainete hulka kooli esimeses astmes, mis hõlbustaks põhiainete omandamist. Ettekanne konverentsil "Õppeprotsessi innovatsioon tänases koolis. Narva koolide kogemus" : Narva, 2002

  15. 78 FR 32713 - Distribution of Continued Dumping and Subsidy Offset to Affected Domestic Producers

    Science.gov (United States)

    2013-05-31

    ... Offset to Affected Domestic Producers) in the Federal Register (66 FR 48546) on September 21, 2001, which.... Revere Copper Products. United Steelworkers of America. A-122-605......... 731-TA-367........ Color.... Stockham Valves & Fittings. U-Brand. Ward Manufacturing. A-351-602......... 731-TA-308........ Carbon...

  16. 75 FR 23240 - Initiation of Five-Year (“Sunset”) Review

    Science.gov (United States)

    2010-05-03

    ... Antidumping and Countervailing Duty Orders, 63 FR 13516 (March 20, 1998) and 70 FR 62061 (October 28, 2005... (``Sunset'') Reviews of Antidumping and Countervailing Duty Orders: Policy Bulletin, 63 FR 18871 (April 16...-001 731-TA-125 PRC Potassium Jennifer Moats, Permanganate (3rd (202) 482-5047. Review). A-351-503...

  17. 40 CFR 80.1468 - Incorporation by reference.

    Science.gov (United States)

    2010-07-01

    ... Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. To enforce any edition other than.../code_of_federal_regulations/ibr_locations.html. This material is also available for inspection at the... Tables, Approved 2008; IBR approved for § 80.1426(f)(8)(ii)(B). (2) ASTM D 4442-07 (“ASTM D...

  18. Porosity Defect Remodeling and Tensile Analysis of Cast Steel

    OpenAIRE

    Linfeng Sun; Ridong Liao; Wei Lu; Sibo Fu

    2016-01-01

    Tensile properties on ASTM A216 WCB cast steel with centerline porosity defect were studied with radiographic mapping and finite element remodeling technique. Non-linear elastic and plastic behaviors dependent on porosity were mathematically described by relevant equation sets. According to the ASTM E8 tensile test standard, matrix and defect specimens were machined into two categories by two types of height. After applying radiographic inspection, defect morphologies were mapped to the mid-s...

  19. Bromine number should replace FIA in gasoline olefins testing

    International Nuclear Information System (INIS)

    Fluorescent indicator adsorption (FIA) analysis, the ASTM test method proposed by the U.S. Environmental Protection Agency (EPA) for monitoring olefins in reformulated gasoline, is subject to significant bias and imprecision. This paper reports on a more accurate, environmentally pertinent measure of olefin content in reformulated gasoline is bromine number another ASTM method. Petroleum chemists should therefore work together with the EPA to select and optimize a bromine number procedure specifically designed for reformulated gasoline to replace FIA

  20. USE OF ROUND BAR SPECIMEN IN FRACTURE TOUGHNESS TEST OF METALLIC MATERIALS

    OpenAIRE

    NEELAKANTHA V LONDE,; DR. T.JAYARAJU; DR. P.R.SADANANDA RAO

    2010-01-01

    The fracture toughness of high strength metallic materials is determined by standard test methods like ASTM E 399, ASTM E-1820 using standard specimen geometries such as Compact tension (CT) or Single edge notched bend (SENB) specimens. This paper explains a simple test methodology based on fracture mechanics approach usingcircumferentially cracked round bar (CCRB) specimen. Specimen preparation and fatigue precracking is quite simple, consuming less material and machining time. This CCRB, be...

  1. Kekuatan Tekan dan Flexural Material Komposit Serat Bambu Epoksi

    OpenAIRE

    Agustinus Purna Irawan; I Wayan Sukania

    2013-01-01

    Natural fiber composite to be one good choice to substitute synthetic fiber composite. One of the abundance of natural fiber is bamboo fiber. This study aims to develop and obtain the mechanical characteristics of bamboo fiber composite with epoxy matrix that will be implemented on the socket prosthesis product. Testing was conducted involve the compressive strength according ASTM D 695, flexural strength according ASTM D 730-03, and compressive failure test of socket prototype product accord...

  2. Perspectives of Siberian chemical plant in increasing volumes of uranium concentrates recycling

    OpenAIRE

    Lazarchuk, V. V.; Shikerun, T. G.; Ryabov, A. S.; Shamin, V. I.; Zhiganov, A. N.

    2007-01-01

    The purification technology of uranium concentrate of natural isotopic composition developed at Siberian chemical enterprise is basically universal, allows recycling uranium concentrates with different content of impurities and obtaining uranium nitrate solutions corresponding by quality to the international standards requirements to uranium hexafluoride preparation for isotopes ASTM C 787-03 separation and to ceramic fuel ASTM C 788-02 preparation. Uranium reserves in Russia and abroad were ...

  3. Coating and Interface Degradation of Coated steel, Part 2: Accelerated Laboratory Tests

    International Nuclear Information System (INIS)

    In a previous paper, it was demonstrated that the measurement of cathodic delamination by the Scanning Kelvin Probe can assess the interface stability of poly(vinyl butyral) (PVB) coated steel after field exposure. This technique was utilized to characterize the degradation of the polymer/metal interface in several outdoor climates. In this paper, the effects of environmental factors on the interface degradation were investigated in the laboratory. The mechanisms measured in the field were reproduced to provide input in the development of an appropriate accelerated test for PVB coated steel. The ASTM B117 and G154 standardized tests were investigated individually and sequentially. The interface stability improved after 24 h of ASTM G154 exposure. After 144 h of exposure to ASTM G154 exposure, polymer oxidation took place simultaneously with interface degradation. The condensation phase of the ASTM G154 test was responsible for the interface improvement while the ultraviolet radiation triggered the interface degradation. Pre-exposure to ASTM G154 delayed wet de-adhesion during ASTM B117 exposure. After wet de-adhesion caused by 6 h of ASTM B117, exposure to ASTM G154 for 24 h increased the interface stability. The effects of ultraviolet radiation, relative humidity, temperature and environment on interface degradation were investigated in a special chamber. Humidity was the primary factor found to influence the interface improvement during G154 exposure. A wet/dry salt fog cycle with irradiation by an ultraviolet or filtered xenon arc lamp around room temperature was suggested to reproduce the competition between the interface improvement and the interface degradation that takes place in the field

  4. Sequestration Coating Performance Requirements for Mitigation of Contamination from a Radiological Dispersion Device

    International Nuclear Information System (INIS)

    Immediate action would be necessary to minimize the effects of a radiological 'dirty bomb' detonation in a major city. After a dirty bomb has been detonated, vehicular and pedestrian traffic, as well as weather effects, would increase the spread of loose contamination, making control and recovery more difficult and costly. While contaminant migration and chemical binding into surface materials can be relatively rapid, the immediate treatment of surfaces with large quantities of an appropriate compound could alleviate much of the difficulty in decontamination. The EPA's National Homeland Security Research Center (NHSRC), in collaboration with ASTM International, is currently developing performance standards for materials which could be applied to exterior surfaces contaminated by an RDD to mitigate the spread and migration of radioactive contamination. These performance standards are being promulgated via an ASTM Standard Specification to be published by ASTM International. Test methods will be developed to determine if candidate coatings meet the performance requirements stipulated in the ASTM performance standard. These test methods will be adapted from existing standard methods, or will be devised through laboratory research. The final set of test methods will be codified in an ASTM or other standard test method. The principal market for products described in the ASTM performance standard would be federal, state and local government emergency responders and response planners, decontamination service providers and those whose interests include protection and recovery of real estate potentially at risk from radiological terrorism. (authors)

  5. Regulatory perspectives on the use of remediation by natural attenuation for petroleum fuel releases from underground storage tanks

    International Nuclear Information System (INIS)

    This paper presents a comprehensive general explanation of remediation of hydrocarbon fuels in the subsoil and ground water by natural attenuation. Attention is focused on the aromatic hydrocarbons benzene, toluene, ethylbenzene, and xylene (BTEX) and the oxygenated fuel additive methyl tertiary butyl ether (MTBE), as these are the most important and the most prevalent ground water contaminants from fuel. The draft American Society for Testing and Materials for Risk-Based Corrective Action (ASTM) Standard Guide for Remediation by Natural Attenuation at Petroleum Release Sites, hereafter referred to as the draft ASTM RNA Guide, is described as it appeared in April of this year. Endorsement of the ASTM RNA Guide by USEPA may be forthcoming as EPA's involvement with RNA has been similar to their participation in the development of the ASTM RBCA Guide. An integration of ASTM RBCA and the ASTM RNA Guide, adapted for local use, may help resolve the complex and difficult UST fuel release problem. The combination of scientific observation by sampling and analysis of appropriate chemicals, combined with reasonable efforts to predict the movement and fate of contaminants based on scientific principles, certainly presents us with the best means of defensible site evaluation

  6. Arsenic transformation predisposes human skin keratinocytes to UV-induced DNA damage yet enhances their survival apparently by diminishing oxidant response

    International Nuclear Information System (INIS)

    Inorganic arsenic and UV, both human skin carcinogens, may act together as skin co-carcinogens. We find human skin keratinocytes (HaCaT cells) are malignantly transformed by low-level arsenite (100 nM, 30 weeks; termed As-TM cells) and with transformation concurrently undergo full adaptation to arsenic toxicity involving reduced apoptosis and oxidative stress response to high arsenite concentrations. Oxidative DNA damage (ODD) is a possible mechanism in arsenic carcinogenesis and a hallmark of UV-induced skin cancer. In the current work, inorganic arsenite exposure (100 nM) did not induce ODD during the 30 weeks required for malignant transformation. Although acute UV-treatment (UVA, 25 J/cm2) increased ODD in passage-matched control cells, once transformed by arsenic to As-TM cells, acute UV actually further increased ODD (> 50%). Despite enhanced ODD, As-TM cells were resistant to UV-induced apoptosis. The response of apoptotic factors and oxidative stress genes was strongly mitigated in As-TM cells after UV exposure including increased Bcl2/Bax ratio and reduced Caspase-3, Nrf2, and Keap1 expression. Several Nrf2-related genes (HO-1, GCLs, SOD) showed diminished responses in As-TM cells after UV exposure consistent with reduced oxidant stress response. UV-exposed As-TM cells showed increased expression of cyclin D1 (proliferation gene) and decreased p16 (tumor suppressor). UV exposure enhanced the malignant phenotype of As-TM cells. Thus, the co-carcinogenicity between UV and arsenic in skin cancer might involve adaptation to chronic arsenic exposure generally mitigating the oxidative stress response, allowing apoptotic by-pass after UV and enhanced cell survival even in the face of increased UV-induced oxidative stress and increased ODD. - Highlights: → Arsenic transformation adapted to UV-induced apoptosis. → Arsenic transformation diminished oxidant response. → Arsenic transformation enhanced UV-induced DNA damage.

  7. Energy Saving Melting and Revert Reduction Technology (Energy SMARRT): Development of CCT Diagrams

    Energy Technology Data Exchange (ETDEWEB)

    Chumbley, L Scott

    2011-08-20

    goal of this study was to accurately characterize the solid-solid phase transformations seen in cast superaustenitic stainless steels. Heat treatments were performed to understand the time and temperature ranges for intermetallic phase formations in alloys CN3MN and CK3McuN. Microstructures were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy and wavelength dispersive spectroscopy (EDS, WDS). In this way TTT and CCT diagrams could be developed for the matrix of samples chosen. As this study consisted of basic research into the development of TTT and CCT diagrams as an aid to the US steel casting industry, there is no formal commercialization plan associated with this task other than presentations and publications via the Steel Founders Society of America to their members. The author is confident that the data contained in this report can be used by steel foundries to refine their casting procedures in such a way as to reduce the amount of waste produced and energy wasted by significantly reducing or eliminating the need for remelting or recasting of material due to unwanted, premature intermetallic formation. This development of high alloy steel CCT diagrams was predicted to result in an average energy savings of 0.05 trillion BTU's/year over a 10 year period (with full funding). With 65% of the proposed funding, current (2011) annual energy saving estimates, based on initial dissemination to the casting industry in 2011and market penetration of 97% by 2020, is 0.14 trillion BTU's/year. The reduction of scrap and improvement in casting yield will also result in a reduction of environmental emissions associated with the melting and pouring of the steel. The average annual estimate of CO2 reduction per year through 2020 is 0.003 Million Metric Tons of Carbon Equivalent (MM TCE)

  8. State of the reactor vessel surveillance programs in Korea and foreign countries

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jeong Kyu; Hwang, Jong Keun; Park, Keon Woo; Kim, Bum Sik; Jeong, Kyung Hoon [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    1996-06-01

    ASTM standards are dominating all over the world in the field of the reactor vessel surveillance program. They are mainly used directly or that the national standards in use correspond quite well with ASTM. According to, however, increasing concerns about the protection of environment and safety of nuclear plant, various approaches to establish and reinforce the national standards are made actively in Europe. In addition, some methods to share the nuclear data by integrating the existing test, analysis procedures and units system are considered. For nuclear plants in Korea, MOST Notice No. 92-20 should be applied for all PWRs after UCN units 3 and 4 since it was promulgated at Dec. 1992. The notice almost reflects the contents of ASTM E 185. But, the notice has much to be desired to provide the technical back-ground for reactor vessel surveillance program because it is not a standard such as ASTM or ASME code but regulation such as CFR or RG. Several Korean Standards are also used in limited area of the surveillance program. Therefore, practical requirements and rules for surveillance program are in accordance with the ASTM and CFR. In this report, the state of application of the standards to the surveillance program in Korea and Europe are reviewed and their national standards re compared with US standards or regulations. Current level and the future prospect of surveillance technology for PWR vessel are discussed at this point of view. 15 tabs., 12 figs., 38 refs. (Author).

  9. Comparison of fracture toughness (KIC) and strain energy release rate (G) of selected nuclear graphites

    Science.gov (United States)

    Chi, Se-Hwan

    2016-08-01

    The fracture behaviors of six nuclear graphite grades for a high-temperature gas-cooled reactor (HTGR), which differed in coke particle size and forming method, were characterized based on the ASTM standard graphite fracture toughness test method (ASTM D 7779-11) at room temperature. The G appeared to show good correlation with the fracture surface roughness and the G-Δa curves appeared to describe the fracture process well from crack initiation to failure. Comparison of the local (KIC) and gross (GIC, G-Δa) fracture parameters showed that the resistance to crack initiation and propagation was higher in the extruded or vibration molded medium particle size grades (PCEA, NBG-17, NBG-18: EVM group) than in the iso-molded fine particle size grades (IG-110, IG-430, NBG-25: IMF group). The ASTM may need to provide a guideline for G-Δa curve analysis. The KIC appeared to increase with specimen thickness (size).

  10. Standard Guide for Testing Polymer Matrix Composite Materials

    CERN Document Server

    American Society for Testing and Materials. Philadelphia

    2011-01-01

    1.1 This guide summarizes the application of ASTM standard test methods (and other supporting standards) to continuous-fiber reinforced polymer matrix composite materials. The most commonly used or most applicable ASTM standards are included, emphasizing use of standards of Committee D30 on Composite Materials. 1.2 This guide does not cover all possible standards that could apply to polymer matrix composites and restricts discussion to the documented scope. Commonly used but non-standard industry extensions of test method scopes, such as application of static test methods to fatigue testing, are not discussed. A more complete summary of general composite testing standards, including non-ASTM test methods, is included in the Composite Materials Handbook (MIL-HDBK-17). Additional specific recommendations for testing textile (fabric, braided) composites are contained in Guide D6856. 1.3 This guide does not specify a system of measurement; the systems specified within each of the referenced standards shall appl...

  11. Pengaruh Pengekstrakan pada Kekuatan Kayu: Damar Batu, Kempas, dan Durian

    Directory of Open Access Journals (Sweden)

    Iskandar Iskandar

    2009-12-01

    Full Text Available The objective of this research is to determine strength rate of Damar Batu/Balau (Shorea spp., Kempas (Kompassia malaccensis, and Durian (Durio spp. before and after extraction. For this purpose, three solvents were used in sequence to extract the wood which are acetone pentane, and mixture of hexane, acetone, and water (HAW with volume ratio 55:44:2. Studies on the wood comprises of tensile, bending, and impact test. The tests are conducted based on method of ASTM D 3500 – 90, ASTM D 3043 – 95, and ASTM D 1e43 – 94 for tensile, bending, and impact test, respectively. The result showed that Damar Batu/Balau has higher strength compared to Kempas and Durian Woods. All the wood samples after extraction show a slight decreasing in tensile strength, tensile extension, and flexural stress, whereby modulus tensile, modulus flexural, and impact strength increases. Keywords: bending, extraction, impact, tensile

  12. Automatic Detection of Pearlite Spheroidization Grade of Steel Using Optical Metallography.

    Science.gov (United States)

    Chen, Naichao; Chen, Yingchao; Ai, Jun; Ren, Jianxin; Zhu, Rui; Ma, Xingchi; Han, Jun; Ma, Qingqian

    2016-02-01

    To eliminate the effect of subjective factors during manually determining the pearlite spheroidization grade of steel by analysis of optical metallography images, a novel method combining image mining and artificial neural networks (ANN) is proposed. The four co-occurrence matrices of angular second moment, contrast, correlation, and entropy are adopted to objectively characterize the images. ANN is employed to establish a mathematical model between the four co-occurrence matrices and the corresponding spheroidization grade. Three materials used in coal-fired power plants (ASTM A315-B steel, ASTM A335-P12 steel, and ASTM A355-P11 steel) were selected as the samples to test the validity of our proposed method. The results indicate that the accuracies of the calculated spheroidization grades reach 99.05, 95.46, and 93.63%, respectively. Hence, our newly proposed method is adequate for automatically detecting the pearlite spheroidization grade of steel using optical metallography. PMID:26754768

  13. Avaliação da resistência à torção em parafusos utilizados em implantes - um panorama brasileiro The torsion strength of orthopedic implant screws - a suvey of brazilian samples

    Directory of Open Access Journals (Sweden)

    Andrea Madeira Kliauga

    2010-03-01

    Full Text Available Desde 2004, o CCDM realiza ensaios mecânicos em implantes ortopédicos. Os componentes mais utilizados - e conseqüentemente ensaiados - são parafusos, comumente fabricados com aço inoxidável ASTM F138, ou liga de titânio ASTM F136. O objetivo desse trabalho é avaliar os resultados referentes aos ensaios de torção em parafusos metálicos, dando um panorama das propriedades médias dos produtos ensaiados. Tais resultados provieram de material fornecido por 15 fabricantes diferentes, num total de 451 ensaios, que cobriram quase todo o espectro de parafusos utilizados em implantes: ortodontia, parafusos pediculares, parafusos para ossos corticais e esponjosos, parafusos de bloqueio e de ancoragem. A dispersão dos resultados de ângulo de ruptura é elevada. A maioria dos resultados, no entanto, apresenta valores acima do mínimo exigido pela norma ASTM F543.Since 2004, the CCDM lab performs tests on orthopedic implants. The most used (and tested implants are screws. These are commonly made either of austenitic stainless steel ASTM F138 or of Ti-6Al-4V alloy ASTM F136. The aim of this study was to evaluate the obtained torsion test results and to present an overview of the average product properties. The results stand for 15 different producers, and 451 samples, covering almost all the screw types utilized in implants: orthodontic, anchor and tibial nail applications, and designs for pedicular, cortical and cancellous bones. The dispersion in angle of rupture was high. Nevertheless the majority of the results lied above the minimum required by the ASTM F543 standard.

  14. Certification of alternative aviation fuels and blend components

    Energy Technology Data Exchange (ETDEWEB)

    Wilson III, George R. (Southwest Research Institute, 6220 Culebra Road, San Antonio, Texas 78238 (United States)); Edwards, Tim; Corporan, Edwin (United States Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio 45433 (United States)); Freerks, Robert L. (Rentech, Incorporated, 1331 17th Street, Denver, Colorado 80202 (United States))

    2013-01-15

    Aviation turbine engine fuel specifications are governed by ASTM International, formerly known as the American Society for Testing and Materials (ASTM) International, and the British Ministry of Defence (MOD). ASTM D1655 Standard Specification for Aviation Turbine Fuels and MOD Defence Standard 91-91 are the guiding specifications for this fuel throughout most of the world. Both of these documents rely heavily on the vast amount of experience in production and use of turbine engine fuels from conventional sources, such as crude oil, natural gas condensates, heavy oil, shale oil, and oil sands. Turbine engine fuel derived from these resources and meeting the above specifications has properties that are generally considered acceptable for fuels to be used in turbine engines. Alternative and synthetic fuel components are approved for use to blend with conventional turbine engine fuels after considerable testing. ASTM has established a specification for fuels containing synthesized hydrocarbons under D7566, and the MOD has included additional requirements for fuels containing synthetic components under Annex D of DS91-91. New turbine engine fuel additives and blend components need to be evaluated using ASTM D4054, Standard Practice for Qualification and Approval of New Aviation Turbine Fuels and Fuel Additives. This paper discusses these specifications and testing requirements in light of recent literature claiming that some biomass-derived blend components, which have been used to blend in conventional aviation fuel, meet the requirements for aviation turbine fuels as specified by ASTM and the MOD. The 'Table 1' requirements listed in both D1655 and DS91-91 are predicated on the assumption that the feedstocks used to make fuels meeting these requirements are from approved sources. Recent papers have implied that commercial jet fuel can be blended with renewable components that are not hydrocarbons (such as fatty acid methyl esters). These are not allowed blend

  15. Beta Testing Implementation of the Purdue Time Domain Reflectometry (TDR) Method for Soil Water Content and Density Measurement

    OpenAIRE

    Drnevich, Vincent P.; Yu, Xiong; Lovell, Janet Elaine

    2003-01-01

    The Purdue TDR method is a new technology for simultaneously measuring soil water content and dry density insitu. An ASTM standard for using TDR to measure soil water content and dry density based on Purdue TDR method was approved during the time span of this project and is designated ASTM D6780. The primary objective of this study was to take the Purdue TDR Method to the point where it is widely field tested by users on a broad spectrum of soils around the country. This goal was achieved by ...

  16. GC fingerprints coupled to pattern-recognition multivariate SIMCA chemometric analysis for Brazilian gasoline quality studies

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues Hatanaka, Rafael; Flumignan, Danilo Luiz; Oliveira, Jose Eduardo de [Sao Paulo State Univ., Araraquara, SP (Brazil). Center for Monitoring and Research of the Quality of Fuels, Biofuels, Crude Oil and Derivatives

    2009-10-15

    ASTM D6729 gas chromatographic fingerprinting coupled to pattern-recognition multivariate soft independent modeling of class analogy (SIMCA) chemometric analysis provides an original and alternative approach to screening Brazilian commercial gasoline quality. SIMCA, was performed on gas chromatographic fingerprints to classify the quality of representative commercial gasoline samples selected by hierarchical cluster analysis and collected over a 5 month period from gas stations in Sao Paulo State, Brazil. Following an optimized ASTM D6729 gas chromatographic-SIMCA algorithm, it was possible to correctly classify the majority of commercial gasoline samples. The method could be employed for rapid monitoring to discourage adulteration. (orig.)

  17. Combustion Properties of Laminated Veneer Lumbers Bonded With PVAc, PF Adhesives and Impregnated With Some Chemicals = Bazi Kimyasallarla Emprenye Edilmiş ve PF ve PVAc Tutkali ile Yapıştırılan Lamine Ağaç Malzemelerin Yanma Özellikleri

    OpenAIRE

    Kurt, Şeref; Uysal, Burhanettin

    2006-01-01

    In this study, it has been investigated that the effects of impregnation materials that are (NH3)2P, Al2(SO4)3, K2CO3, Cacl, Zncl2, on combustion properties of 3 ply laminated veneer lumbers (LVL) produced from fir (Abies bornmülleriana Mattf.) by using of phenol-formaldehyde (PF), polyvinyl acetate (PVAc). The pressure - vacuum method was used for impregnation process. Combustion test was performed according to the procedure of ASTM-E 69 standards. As a result; zinc chloride was found to b...

  18. Bazı kimyasallarla emprenye edilmiş ve PF ve PVAC tutkalı ile yapıştırılan lamine ağaç malzemelerin yanma özellikleri

    OpenAIRE

    Kurt, Şeref; Uysal, Burhanettin

    2006-01-01

    In this study, it has been investigated that the effects of impregnation materials that are (NH3)2P, Al2(SO4)3, K2CO3, Cacl, Zncl2, on combustion properties of 3 ply laminated veneer lumbers (LVL) produced from fir (Abies bornmülleriana Mattf.) by using of phenol-formaldehyde (PF), polyvinyl acetate (PVAc). The pressure - vacuum method was used for impregnation process. Combustion test was performed according to the procedure of ASTM-E 69 standards. As a result; zinc chloride was found to be ...

  19. Pengaruh Pengekstrakan pada Kekuatan Kayu: Damar Batu, Kempas, dan Durian

    OpenAIRE

    Iskandar Iskandar

    2009-01-01

    The objective of this research is to determine strength rate of Damar Batu/Balau (Shorea spp.), Kempas (Kompassia malaccensis), and Durian (Durio spp.) before and after extraction. For this purpose, three solvents were used in sequence to extract the wood which are acetone pentane, and mixture of hexane, acetone, and water (HAW) with volume ratio 55:44:2. Studies on the wood comprises of tensile, bending, and impact test. The tests are conducted based on method of ASTM D 3500 – 90, ASTM D 304...

  20. Thermodynamic and transport properties of air and its products of combustion with ASTMA-A-1 fuel and natural gas at 20, 30, and 40 atmospheres

    Science.gov (United States)

    Poferl, D. J.; Svehla, R. A.

    1973-01-01

    The isentropic exponent, molecular weight, viscosity, specific heat at constant pressure, thermal conductivity, Prandtl number, and enthalpy were calculated for air, the combustion products of ASTM-A-1 jet fuel and air, and the combustion products of natural gas and air. The properties were calculated over a temperature range from 300 to 2800 K in 100 K increments and for pressures of 20, 30 and 40 atmospheres. The data for natural gas and ASTM-A-1 were calculated for fuel-air ratios from zero to stoichiometric in 0.01 increments.

  1. The comparison of corrosion resistance between Baosteel's alloy 690 tube and foreign alloy 690 tube

    International Nuclear Information System (INIS)

    Alloy 690 having excellent corrosion resistance is widely used for SG tubes. The intergranular corrosion and pitting corrosion resistance of Baosteel's alloy 690 tube, Country A alloy 690 tube and Country B alloy 690 tube have been analysed by comparison. It shows that: The intergranular corrosion of Baosteel's alloy 690 tube tested complied with ASTM G28 Standard could satisfy the technical requirement. However.some of Baosteel's alloy 690 tube in intergranular corrosion resistance had less performance than Country A. In addition, pitting corrosion tested with ASTM G48 Standard shown the Baosteel's alloy 690 tube better than Country B. (authors)

  2. Interlaboratory evaluation of a standardized inductively coupled plasma mass spectrometry method for the determination of trace beryllium in air filter samples.

    Science.gov (United States)

    Ashley, Kevin; Brisson, Michael J; Howe, Alan M; Bartley, David L

    2009-12-01

    A collaborative interlaboratory evaluation of a newly standardized inductively coupled plasma mass spectrometry (ICP-MS) method for determining trace beryllium in workplace air samples was carried out toward fulfillment of method validation requirements for ASTM International voluntary consensus standard test methods. The interlaboratory study (ILS) was performed in accordance with an applicable ASTM International standard practice, ASTM E691, which describes statistical procedures for investigating interlaboratory precision. Uncertainty was also estimated in accordance with ASTM D7440, which applies the International Organization for Standardization Guide to the Expression of Uncertainty in Measurement to air quality measurements. Performance evaluation materials (PEMs) used consisted of 37 mm diameter mixed cellulose ester filters that were spiked with beryllium at levels of 0.025 (low loading), 0.5 (medium loading), and 10 (high loading) microg Be/filter; these spiked filters were prepared by a contract laboratory. Participating laboratories were recruited from a pool of over 50 invitees; ultimately, 20 laboratories from Europe, North America, and Asia submitted ILS results. Triplicates of each PEM (blanks plus the three different loading levels) were conveyed to each volunteer laboratory, along with a copy of the draft standard test method that each participant was asked to follow; spiking levels were unknown to the participants. The laboratories were requested to prepare the PEMs by one of three sample preparation procedures (hotplate or microwave digestion or hotblock extraction) that were described in the draft standard. Participants were then asked to analyze aliquots of the prepared samples by ICP-MS and to report their data in units of mu g Be/filter sample. Interlaboratory precision estimates from participating laboratories, computed in accordance with ASTM E691, were 0.165, 0.108, and 0.151 (relative standard deviation) for the PEMs spiked at 0.025, 0

  3. Crack propagation in tough ductile materials. Phase I

    International Nuclear Information System (INIS)

    The report describes and presents the J-resistance curves obtained as a function of crack extension for two representative tough ductile materials namely ASTM516 grade 70 plate steel and SA106 grade B pipe steel. The results were obtained using the ASTM standard method for determining J-R curves, E24.08, 12th Draft, 25th July, 1985. Both compact tension and three point bend tests were employed for the plate steel tests; only compact tension specimens were used to evaluate the pipe steel. All tests were carried out under load control conditions using specimens of different thickness and cut from known orientations within the parent material

  4. National standards for the nuclear industry

    International Nuclear Information System (INIS)

    Standards needs for the nuclear industry are being met by a number of voluntary organizations, such as ANS, ASTM, AWS, ASME, and IEEE. The American National Standards Institute (ANSI) coordinates these activities and approves completed standards as American National Standards. ASTM has two all-nuclear committees, E-10 and C-26. A C-26 subcommittee, Test Methods, has been active in writing analytical chemistry standards for twelve years. Thirteen have been approved as ANSI standards and others are ready for ballot. Work is continuing in all areas of the nuclear fuel cycle

  5. A manufacturing process for tubular blanks made of zircaloy 2 and internally plated with zirconium, with possibility of ultrasonic control of the zirconium thickness

    International Nuclear Information System (INIS)

    In order to be able to carry out ultrasonic measurement of the thickness of the zirconium coating on the inner side of nuclear fuel tubes made of zircaloy 2, a new process for the fabrication of plated tubular blanks is proposed: the plating is thermo-mechanically treated at one or more stages of the blank manufacturing, in order to control the grain size at precise levels on the zircaloy 2 (ASTM Index between 9 and 12) and on the zirconium (6 to 10); the grain size difference between the two material should remain larger than 2 ASTM indexes. 4 refs., 5 figs., 1 tab

  6. Comparative assessment of cyclic J-R curve determination by different methods in a pressure vessel steel

    Science.gov (United States)

    Chowdhury, Tamshuk; Sivaprasad, S.; Bar, H. N.; Tarafder, S.; Bandyopadhyay, N. R.

    2016-04-01

    Cyclic J-R behaviour of a reactor pressure vessel steel using different methods available in literature has been examined to identify the best suitable method for cyclic fracture problems. Crack opening point was determined by moving average method. The η factor was experimentally determined for cyclic loading conditions and found to be similar to that of ASTM value. Analyses showed that adopting a procedure analogous to the ASTM standard for monotonic fracture is reasonable for cyclic fracture problems, and makes the comparison to monotonic fracture results straightforward.

  7. Specimen size-considerations in fatigue crack growth rate testing

    International Nuclear Information System (INIS)

    The effect of specimen size upon the fatigue-crack growth behavior of annealed AISI Type 304 stainless steel was studied at two stress ratios at an elevated temperature. The resulting data were examined in the light of the present ASTM size criterion (based upon monotonic yield stength) as well as a proposed criterion based upon the material flow strength. The flow stress criterion is considerably less restrictive than the present ASTM Criterion, and the results of this study indicate that the flow stress criterion is entirely appropriate for strain-hardening materials such as the austenitic stainless steels

  8. Mode II Interlaminar Fracture Toughness and Fatigue Characterization of a Graphite Epoxy Composite Material

    Science.gov (United States)

    O'Brien, T. Kevin; Johnston, William M.; Toland, Gregory J.

    2010-01-01

    Mode II interlaminar fracture toughness and delamination onset and growth characterization data were generated for IM7/8552 graphite epoxy composite materials from two suppliers for use in fracture mechanics analyses. Both the fracture toughness testing and the fatigue testing were conducted using the End-notched Flexure (ENF) test. The ENF test for mode II fracture toughness is currently under review by ASTM as a potential standard test method. This current draft ASTM protocol was used as a guide to conduct the tests on the IM7/8552 material. This report summarizes the test approach, methods, procedures and results of this characterization effort.

  9. A Comparative Experimental Analysis of Tribological Properties Between Commercial Mineral Oil and Neat Castor Oil using Taguchi Method in Boundary Lubrication Regime

    OpenAIRE

    Bhaumik, S; Pathak, S. D.

    2016-01-01

    The present work aims to carry out a comparative experimental analysis of tribological properties of 372cSt mineral oil and 229cSt castor oil. The antiwear and extreme pressure properties of both the oils have been analysed according to ASTM G 99 and ASTM D-2783 standards. The surfaces of the balls and pins after tribo tests have been analysed using Scanning Electron Microscope (SEM) images. The present test results predict that the antiwear and extreme pressure properties in case of the sele...

  10. Design Of Material Access Shielding Door Of ISFSF Building

    International Nuclear Information System (INIS)

    Base on the planning to maintain of the air pressure in the reactor building, the design of material access shielding door in the ISFSF building has been done. By the installation designed, the air pressure condition in the reactor building well meet the design criteria. The system requires 12 pieces of steel beam L 4 x 3 x 1/2 inches ASTM A36 and 6 pieces steel plate by 2400 x 1200 x 3 mm dimension ASTM A514. This paper concluded that this design is feasible to be realized

  11. Recubrimientos de 560 as producidos con el sistema de proyección térmica por arco

    OpenAIRE

    Vélez Sánchez, Hernando

    2013-01-01

    Atendiendo la importancia en el desarrollo de nuevos recubrimientos para mejorar las propiedades de los materiales, en particular en las aplicaciones expuestas a desgaste abrasivo y corrosión, se ha estudiado el comportamiento del recubrimiento en acero inoxidable AS 560, similar a los aceros de la familia ASTM 420, aplicado sobre sustratos AISI/SAE 1045 y ASTM 316L, utilizando la técnica de rociado térmico por arco, orientado a la potencial recuperación dimensional de piezas u...

  12. Relación microestructura resistencia al desgaste de recubrimientos duros ricos en cromo y tungsteno aplicados por soldadura electrica (SMAW)

    OpenAIRE

    Lisys Margarita León Sevilla; Juan Carlos Gutierrez Pineda; Alejandro Toro

    2004-01-01

    Se comparó la microestructura y resistencia a la abrasión de recubrimientos duros depositados por soldadura sobre placas de acero estructural ASTM A36. Se utilizaron cinco electrodos comerciales, dos de bajo cromo, dos de alto cromo aplicados en una y dos capas y uno rico en tungsteno depositado en una capa La resistencia al desgaste fue evaluada en una máquina de rueda de caucho y arena seca construida según la norma ASTM G65-80. Como material abrasivo se utilizaron partículas de...

  13. Efecto del amperaje en las propiedades de recubrimientos duros resistentes a la abrasión aplicados por soldadura

    OpenAIRE

    Héctor Iván Monsalve Gil; David Alejandro Mena Herrera; Jorge Enrique Giraldo Barrada

    2004-01-01

    Se estudió el efecto del amperaje en la microestructura, la dureza y la resistencia al desgaste abrasivo de dos aleaciones para recubrimientos duros con base hierro, alto Cr y C. Se aplicaron dos y tres capas de cada electrodo mediante el proceso SMAW sobre platinas de acero ASTM A36. La resistencia al desgaste abrasivo se calculó midiendo la masa perdida después de un ensayo de acuerdo al estándar internacional ASTM G65. La microestructura fue analizada usando microscopio óptico ...

  14. Vacuum infusion manufacturing and experimental characterization of Kevlar/epoxy composites

    International Nuclear Information System (INIS)

    Epoxy/Kevlar composites have been manufactured by conventional Vacuum Infusion process and the Pulse Infusion technique. Pulse Infusion allows to control the pressure of the vacuum bag on the dry fiber reinforcement by using a proper designed pressure distributor that induces a pulsed transverse action and promotes the through thickness resin flow. The realized composite panel have been mechanically characterized by performing tensile and short beam shear tests according with the ASTM D3039 and ASTM D2344/D 2344M standard respectively in order to investigate the effect of Pulse Infusion on the tensile strength and ILSS

  15. Application of master curve method to Japanese reactor pressure vessel steels. Effect of specimen size on master curve

    International Nuclear Information System (INIS)

    The Master Curve method to determine fracture toughness in the brittle-to-ductile transition temperature range is provided in the ASTM standard E 1921. In this study, the method was applied to two types of typical Japanese reactor pressure vessel steels. As a result, it was confirmed that valid reference temperatures as well as master curves could be determined based on the ASTM standard. The ability of the statistical size scaling as well as the propriety of the assumption on the statistical distribution of fracture toughness was exerpiementally validated. The relative position between the master curve and the current KIC curves was then compared and discussed. (orig.)

  16. Vaimupuudega koolieelikute (re)habilitatsioonivajaduse määratlemine S/P = PAC formulariga / Kristel Voll

    Index Scriptorium Estoniae

    Voll, Kristel

    2000-01-01

    Artikli autor uuris, kas ja kuidas on võimalik Eestis rakendada PAC (Progress Assessment Chart) formularide spetsiaalselt raskema vaimupuudega astme jaoks loodud varinti S/P=PACd mõõduka, raske ja sügava vaimupuudega koolieelikute sotsiaalsete oskuste taseme määramiseks

  17. 76 FR 66688 - Certain Large Diameter Carbon and Alloy Seamless Standard, Line, and Pressure Pipe (Over 41/2

    Science.gov (United States)

    2011-10-27

    ... seamless pipes greater than 4.5 inches (114.3 mm) up to and including 16 inches (406.4 mm) in outside...) are used for the conveyance of water. Seamless pipes are commonly produced and certified to meet ASTM... applications. A more minor application for large diameter seamless pipes is for use in pressure piping...

  18. 24 CFR 3280.705 - Gas piping systems.

    Science.gov (United States)

    2010-04-01

    ... § 3280.705(b) (1) through (4). (1) Steel or wrought-iron pipe shall comply with ANSI Standard B36.10-1979, Welded and Seamless Wrought Steel Pipe. Threaded brass pipe in iron pipe sizes may be used. Threaded brass pipe shall comply with ASTM B43-91, Standard Specification for Seamless Red Brass Pipe,...

  19. 29 CFR 1910.253 - Oxygen-fuel gas welding and cutting.

    Science.gov (United States)

    2010-07-01

    ... accordance with the regulations of the U.S. Department of Transportation, 49 CFR parts 171-179. (ii...) of this section: (1) Pipe shall be at least Schedule 40 and fittings shall be at least standard... with the Standard Specification for Seamless Copper Water Tube, ASTM B88-66a, which is incorporated...

  20. 24 CFR 3280.703 - Minimum standards.

    Science.gov (United States)

    2010-04-01

    .../ASME B1.20.1-1983. Welding and Seamless Wrought Steel Pipe—ANSI/ASME B36.10-1979. Nonferrous Pipe... 1997 revisions. Ferrous Pipe and Fittings Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless—ASTM A53-93. Standard Specification for...

  1. Practical measurement of silicon in low alloy steels by differential pulse stripping voltammetry

    International Nuclear Information System (INIS)

    A sensitive differential pulse anodic stripping voltammetry has been adapted to allow the determination of Si in low-alloy steels using a hanging mercury drop electrode. The method has been qualified using certified ASTM standards and is now running in routine. The present report describes the experimental details, thereby allowing the reader to carry out the measurements precisely. (author)

  2. 49 CFR 192.191 - Design pressure of plastic fittings.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Design pressure of plastic fittings. 192.191... Components § 192.191 Design pressure of plastic fittings. (a) Thermosetting fittings for plastic pipe must conform to ASTM D 2517, (incorporated by reference, see § 192.7). (b) Thermoplastic fittings for...

  3. 40 CFR 98.74 - Monitoring and QA/QC requirements.

    Science.gov (United States)

    2010-07-01

    ... Distribution and Structural Group Analysis of Petroleum Oils by the n-d-M Method (incorporated by reference... Analysis of Natural Gas by Gas Chromatography (incorporated by reference, see § 98.7). (2) ASTM D1946-90 (Reapproved 2006) Standard Practice for Analysis of Reformed Gas by Gas Chromatography (incorporated...

  4. 76 FR 55056 - Toy Safety Standard: Strategic Outreach and Education Plan

    Science.gov (United States)

    2011-09-06

    ... COMMISSION Toy Safety Standard: Strategic Outreach and Education Plan AGENCY: U.S. Consumer Product Safety... community and other stakeholders learn about testing and certification requirements for children's toys and toy chests and their compliance with ASTM International's (formerly the American Society for...

  5. 21 CFR 177.1990 - Vinylidene chloride/methyl acrylate copolymers.

    Science.gov (United States)

    2010-04-01

    .... (2) The weight average molecular weight of the copolymer is not less than 50,000 when determined by... described in ANSI/ASTM D3536-76, “Standard Test Method for Molecular Weight Averages and Molecular Weight... copolymers contain not more than 15 weight-percent of polymer units derived from methyl acrylate....

  6. 40 CFR 761.60 - Disposal requirements.

    Science.gov (United States)

    2010-07-01

    ..., “Organochlorine Pesticides and PCBs” at 40 CFR part 136, Appendix A;” EPA Method 8082, “Polychlorinated Biphenyls... ACT POLYCHLORINATED BIPHENYLS (PCBs) MANUFACTURING, PROCESSING, DISTRIBUTION IN COMMERCE, AND USE... Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography,” which is available from ASTM. (2)......

  7. 40 CFR 98.84 - Monitoring and QA/QC requirements.

    Science.gov (United States)

    2010-07-01

    ... (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Cement Production § 98.84 Monitoring and QA/QC requirements... from each kiln using ASTM C114-09, Standard Test Methods for Chemical Analysis of Hydraulic Cement... Methods for Chemical Analysis of Hydraulic Cement (incorporated by reference, see § 98.7). The...

  8. 29 CFR Appendix A to Subpart Q of... - References to subpart Q of Part 1926

    Science.gov (United States)

    2010-07-01

    ...). • Standard Test Method for Compressive Strength of Concrete Cylinders Cast In-Place in Cylindrical Molds... (ANSI A10.9-1983). • Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens (ASTM C39-86). • Standard Test Method for Making and Curing Concrete Test Specimens in the Field...

  9. Õppevara kaudu iseseisvalt mõtlema! : iseseisva mõtlemise arendamise võimalusi põhikooli kirjanduse õppevaras / Monica-Linde Klemet

    Index Scriptorium Estoniae

    Klemet, Monica-Linde

    2011-01-01

    Artikkel põhineb uurimusel, mille eesmärk oli selgitada välja iseseisva mõtlemise õpetamise võimalused põhikooli III astme kirjandusõpetuses õppekomplektide "Sõna võlu", "Sõna vägi", "Sõna lugu" ja "Labürint I-III" näitel

  10. 29 CFR 1910.6 - Incorporation by reference.

    Science.gov (United States)

    2010-07-01

    ...(a) and 1 CFR part 51. (4) Copies of standards listed in this section and issued by private standards... (ASAE), 2950 Niles Road, Post Office Box 229, St. Joseph, MI 49085: (1) ASAE Emblem for Identifying Slow... Plastic Sheeting and Cellular Plastics, IBR approved for § 1910.103(c)(1)(v)(d). (19) ASTM D...

  11. 33 CFR 137.20 - May industry standards be used to comply with this regulation?

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false May industry standards be used to... DEFENSE Standards and Practices § 137.20 May industry standards be used to comply with this regulation? The industry standards in ASTM E 1527-05, (Referenced in § 137.15) may be used to comply with...

  12. 33 CFR Appendix A to Part 154 - Guidelines for Detonation Flame Arresters

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Guidelines for Detonation Flame... Appendix A to Part 154—Guidelines for Detonation Flame Arresters This appendix contains the draft ASTM standard for detonation flame arresters. Devices meeting this standard will be accepted by the...

  13. Effects of neutrons and gamma radiation on high polymer epoxy adhesives

    International Nuclear Information System (INIS)

    The effect of irradiation in a SLOWPOKE-2 reactor on the adhesive strength of epoxy resins was studied using the ASTM D897 standard testing procedure. Initial weakening, up to 50%, ascribed to chain-scission, is followed by strengthening, ascribed to radiation-induced crosslinking. 7 refs., 1 tab., 14 figs

  14. 40 CFR 89.6 - Reference materials.

    Science.gov (United States)

    2010-07-01

    ... 19428-2959. Document number and name 40 CFR part 89 reference ASTM D86-97: “Standard Test Method for... 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be inspected at US EPA, OAR, 1200 Pennsylvania Ave... D287-92: “Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products”...

  15. 40 CFR 75.19 - Optional SO2, NOX, and CO2 emissions calculation for low mass emissions (LME) units.

    Science.gov (United States)

    2010-07-01

    ... emission test data that is representative of operation at normal load or historical data from a CEMS... historical emission test data that is representative of operation at normal load. The NOX emission limit... and associated recordkeeping may be performed using a consensus standard (e.g., ASTM, API, etc.)...

  16. 78 FR 23918 - Request for Information Regarding Third Party Testing for Lead Content, Phthalate Content, and...

    Science.gov (United States)

    2013-04-23

    ... From the Federal Register Online via the Government Publishing Office ] CONSUMER PRODUCT SAFETY COMMISSION Request for Information Regarding Third Party Testing for Lead Content, Phthalate Content, and the Solubility of the Eight Elements Listed in ASTM F963-11 Correction In notice document 2013-8858 appearing on pages 22518-22520 in the issue...

  17. Eurodist全自动实沸点蒸馏仪在原油评价中应用研究%Studies on Eurodist Full-automatic True Boiling Point Distillation Instrument Applying in Crude Oil Evaluation

    Institute of Scientific and Technical Information of China (English)

    吴良英; 李建华; 李慧

    2011-01-01

    Operating principle and method of Eurodist full-automatic true boiling point distillation instrument were investigated and used to distill crude oil.After comparing experimental results with ITS Testing Services (UK)Ltd, the conclusion showed that ASTM D2892 and ASTM D5236 is suitable for this instrument, and has applied in crude oil evaluation, and has realized automation for crude oil boiling point distillation.%本文介绍了德国Rofa公司生产的全自动实沸点蒸馏仪的工作原理和操作方法,并利用该仪器在实验室对原油进行蒸馏,其蒸馏的数据与英国Intertek实验室进行了对比,我们对蒸馏的结果进行研究分析,研究结果表明,该仪器完全符合ASTM D2892和ASTM D5236标准方法,已经应用于原油评价工作中,实现了测定原油沸点蒸馏的自动化.

  18. Complete utilization of spent coffee grounds to produce biodiesel, bio-oil and biochar

    Science.gov (United States)

    This study presents the complete utilization of spent coffee grounds to produce biodiesel, bio-oil and biochar. Lipids extracted from spent grounds were converted to biodiesel to evaluate neat and blended (B5 and B20) fuel properties against ASTM and EN standards. Although neat biodiesel displayed h...

  19. 40 CFR 600.011-93 - Reference materials.

    Science.gov (United States)

    2010-07-01

    ... 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be inspected at the U.S. Environmental Protection.... Document number and name 40 CFR part 600 reference ASTM E 29-67 (Reapproved 1973) Standard Recommended... the U.S. and Canada), or at http://www.sae.org. Document No. and name 40 CFR part 600 reference...

  20. 40 CFR 90.7 - Reference materials.

    Science.gov (United States)

    2010-07-01

    ... accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be inspected at U.S. EPA Air and Radiation... 19103. Document number and name 40 CFR part 90 reference ASTM D86-93: Standard Test Method for...., Warrendale, PA 15096-0001. Document number and name 40 CFR part 90 reference SAE J1930 September...

  1. 76 FR 64106 - Certain Welded Stainless Steel Pipe From Korea and Taiwan; Scheduling of Expedited Five-Year...

    Science.gov (United States)

    2011-10-17

    ... COMMISSION Certain Welded Stainless Steel Pipe From Korea and Taiwan; Scheduling of Expedited Five-Year Reviews Concerning the Antidumping Duty Orders on Certain Welded Stainless Steel Pipe From Korea and... duty orders on certain welded stainless steel pipe (specifically ASTM A-312 pipe) from Korea and...

  2. 75 FR 6795 - Designation of Biobased Items for Federal Procurement

    Science.gov (United States)

    2010-02-10

    ... its life-cycle costs. For some items, there may be numerous products available. For other items, there... measures and life-cycle costs (the ASTM Standard D7075, ``Standard Practice for Evaluating and Reporting..., economic and technical feasibility, environmental and public health benefits, and life-cycle costs for...

  3. 75 FR 71491 - Designation of Biobased Items for Federal Procurement

    Science.gov (United States)

    2010-11-23

    ..., and life- cycle costs of even a very small percentage of all products that may exist within an item... measures and life-cycle costs (the ASTM Standard D7075, ``Standard Practice for Evaluating and Reporting... health benefits, and life-cycle costs for each of the designated items. Information on the...

  4. 75 FR 63695 - Designation of Biobased Items for Federal Procurement

    Science.gov (United States)

    2010-10-18

    ... product's biobased content and its profile against environmental and health measures and life- cycle costs... evaluating paper products. Life cycle analysis (LCA) practitioners familiar with paper manufacturing have..., manufacturers wishing to make similar ] life-cycle information available may choose to use the ASTM...

  5. 76 FR 43808 - Designation of Biobased Items for Federal Procurement

    Science.gov (United States)

    2011-07-22

    ... content and its profile against environmental and health measures and life-cycle costs (the ASTM Standard... to aquatic life, the environment, and/or workers. Household cleaning products that are formulated to..., on November 23, 2010, a proposed rule in the Federal Register (FR) for the purpose of designating...

  6. Properties of air and combustion products of fuel with air

    Science.gov (United States)

    Poferl, D. J.; Svehla, R. A.

    1975-01-01

    Thermodynamic and transport properties have been calculated for air, the combustion products of natural gas and air, and combustion products of ASTM-A-1 jet fuel and air. Properties calculated include: ratio of specific heats, molecular weight, viscosity, specific heat, thermal conductivity, Prandtl number, and enthalpy.

  7. 49 CFR 179.102-1 - Carbon dioxide, refrigerated liquid.

    Science.gov (United States)

    2010-10-01

    ....102-1, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed... and anchorage of tanks must be made of carbon steel conforming to ASTM A 516/A 516M (IBR, see § 171.7...) (IBR, see § 171.7 of this subchapter) in the longitudinal direction of rolling. The TC 128 plate...

  8. Differentiating for loyalty / Ivar Soone

    Index Scriptorium Estoniae

    Soone, Ivar, 1975-

    2004-01-01

    Autor väidab, et kui on suudetud tekitada tarbija seotus ja sellel põhinev lojaalsus, saab turundaja võtta kasumit seda enam, mida kõrgema astme lojaalsusega on tegemist. Selline kasumi juhtimine muutub jätkusuutlikkuse ning konkurentsieelise hoidmisel üha olulisemaks. Graafikud. Tabelid

  9. A comparative study of accelerated tests to simulate atmospheric corrosion

    International Nuclear Information System (INIS)

    In this study, specimens coated with five organic coating systems were exposed to accelerated tests for periods up to 2000 hours, and also to weathering for two years and six months. The accelerated tests consisted of the salt spray test, according to ASTM B-117; Prohesion (ASTM G 85-98 annex 5A); Prohesion combined with cyclic exposure to UV-A radiation and condensation; 'Prohchuva' a test described by ASTM G 85-98 using a salt spray with composition that simulated the acid rain of Sao Paulo, but one thousand times more concentrated, and 'Prohchuva' combined with cyclic exposure to UV-A radiation and condensation. The coated specimens were exposed with and without incision to expose the substrate. The onset and progress of corrosion at and of the exposed metallic surface, besides coating degradation, were followed by visual observation, and photographs were taken. The coating systems were classified according to the extent of corrosion protection given to the substrate, using a method based on ASTM standards D-610, D-714, D-1654 and D-3359. The rankings of the coatings obtained from accelerated tests and weathering were compared and contrasted with classification of the same systems obtained from literature, for specimens exposed to an industrial atmosphere. Coating degradation was strongly dependent on the test, and could be attributed to differences in test conditions. The best correlation between accelerated test and weathering was found for the test Prohesion alternated with cycles of exposure to UV-A radiation and condensation. (author)

  10. ETBP (Extended True Boiling Point) curve extension of extra heavy crudes; Extensao da curva PEV (Ponto de Ebulicao Verdadeiro) de petroleos extrapesados por destilacao molecular e ampliacao da caracterizacao

    Energy Technology Data Exchange (ETDEWEB)

    Rocha, Rodrigo S.; Batistella, Cesar B.; Maciel, Maria Regina W.; Maciel Filho, Rubens [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Faculdade de Engenharia Quimica; Medina, Lilian C. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES)

    2008-07-01

    For the determination of the TBP (True Boiling Point) Curve, which defines the yield of petroleum products, the ASTM D2892 method for petroleum distillation and ASTM D5236 method for vacuum distillation of heavy hydrocarbons were applied. Furthermore, from these distillations, cuts that are submitted to several analyses to determine its physical-chemical properties are obtained, and all this information generates the evaluation of petroleum. For heavy petroleum, these conventional methods have been limited, since the total distilled percentage determined for temperatures up to 565 deg C (maximum reached with ASTM D5236 method) is lower for these oils, reducing the points of the curve, limiting its information. To improve this data set for heavy oils, a methodology for the extension of TBP curve through molecular distillation was established. It was possible to reach values up to 700 deg C, representing a considerable progress for the extension of TBP curve. The objective of this work is to present the results of Extended TBP curve for a heavy petroleum and characterization carried out through the cuts and residues obtained in molecular distillation of the residue 'Zeta' 400 deg C+ (fancy name), made by ASTM D2892 method. (author)

  11. 40 CFR 1065.1010 - Reference materials.

    Science.gov (United States)

    2010-07-01

    ... 2001), Standard Test Method for Air Cleaning Performance of a High-Efficiency Particulate Air Filter... Specification for Automotive Spark-Ignition Engine Fuel 1065.701 ASTM D5186-03, Standard Test Method for... Federal Register approved the incorporation by reference as prescribed in 5 U.S.C. 552(a) and 1 CFR...

  12. A simple method for the measurement of reflective foil emissivity

    International Nuclear Information System (INIS)

    Reflective metal foil is widely used to reduce radiative heat transfer within the roof space of buildings. Such foils are typically mass-produced by vapor-deposition of a thin metallic coating onto a variety of substrates, ranging from plastic-coated reinforced paper to 'bubble-wrap'. Although the emissivity of such surfaces is almost negligible in the thermal infrared, typically less than 0.03, an insufficiently thick metal coating, or organic contamination of the surface, can significantly increase this value. To ensure that the quality of the installed insulation is satisfactory, Australian building code AS/NZS 4201.5:1994 requires a practical agreed method for measurement of the emissivity, and the standard ASTM-E408 is implied. Unfortunately this standard is not a 'primary method' and requires the use of specified expensive apparatus and calibrated reference materials. At NMIA we have developed a simple primary technique, based on an apparatus to thermally modulate the sample and record the apparent modulation in infra-red radiance with commercially available radiation thermometers. The method achieves an absolute accuracy in the emissivity of approximately 0.004 (k=2). This paper theoretically analyses the equivalence between the thermal emissivity measured in this manner, the effective thermal emissivity in application, and the apparent emissivity measured in accordance with ASTM-E408

  13. A simple method for the measurement of reflective foil emissivity

    Energy Technology Data Exchange (ETDEWEB)

    Ballico, M. J.; Ham, E. W. M. van der [National Measurement Institute, Lindfield, NSW 2070 (Australia)

    2013-09-11

    Reflective metal foil is widely used to reduce radiative heat transfer within the roof space of buildings. Such foils are typically mass-produced by vapor-deposition of a thin metallic coating onto a variety of substrates, ranging from plastic-coated reinforced paper to 'bubble-wrap'. Although the emissivity of such surfaces is almost negligible in the thermal infrared, typically less than 0.03, an insufficiently thick metal coating, or organic contamination of the surface, can significantly increase this value. To ensure that the quality of the installed insulation is satisfactory, Australian building code AS/NZS 4201.5:1994 requires a practical agreed method for measurement of the emissivity, and the standard ASTM-E408 is implied. Unfortunately this standard is not a 'primary method' and requires the use of specified expensive apparatus and calibrated reference materials. At NMIA we have developed a simple primary technique, based on an apparatus to thermally modulate the sample and record the apparent modulation in infra-red radiance with commercially available radiation thermometers. The method achieves an absolute accuracy in the emissivity of approximately 0.004 (k=2). This paper theoretically analyses the equivalence between the thermal emissivity measured in this manner, the effective thermal emissivity in application, and the apparent emissivity measured in accordance with ASTM-E408.

  14. Limitations, improvements and alternatives of the silt density index

    NARCIS (Netherlands)

    Al-Hadidi, A.M.M.; Kemperman, A.J.B.; Schurer, H.; Schippers, J.C.; Wessling, M.; Meer, van der W.G.J.

    2013-01-01

    Reverse osmosis (RO) membrane systems are widely used in the desalination of water. However, flux decline due to fouling phenomena in RO remains a challenge. To minimize fouling, a reliable index is necessary to predict the fouling potential of the RO feed water. The ASTM introduced the silt density

  15. Method refinements for the midge life-cycle, Chironomus dilutus test

    Science.gov (United States)

    Larval stages of non-biting midges can be found in almost any freshwater ecosystem, and one of the commonly tested midges is Chironomus dilutus (Chironomidae, Diptera) which is used for toxicity testing and ecological risk assessment of freshwater contaminants. USEPA, ASTM, Envir...

  16. Cold spray deposition of a WC-25Co cermet onto Al7075-T6 and carbon steel substrates

    International Nuclear Information System (INIS)

    This work focussed on the deposition of wear-resistant and corrosion-resistant WC-25Co cermet powders on carbon steel and aluminium (Al7075-T6) substrates by cold gas spraying (CGS). The unique combination of mechanical, physical and chemical properties of WC-Co cermets has led to their widespread use for the manufacture of wear-resistant parts. X-ray diffraction tests were run on the powder and coatings to determine possible phase changes during the spraying process. The bonding strength of the coatings was measured by adhesion tests (ASTM C633-08). The sliding (ASTM G99-04) and abrasive (ASTM G65-00) wear resistance of the coatings were also studied. Corrosion resistance was determined by electrochemical measurements and salt fog spray tests (ASTM B117-03). CGS achieved thick, dense and hard WC-25Co coatings on both aluminium alloy Al7075-T6 and carbon steel substrates, with excellent tribological and electrochemical properties. We thus conclude that this method is very competitive compared with conventional thermal spraying techniques, giving thick, dense and hard coatings on both aluminium alloy Al7075-T6 and carbon steel substrates, with excellent tribological and electrochemical properties.

  17. Influence of Inner Surface Notch on Fatigue Crack Growth Characteristics of Aluminum Alloy

    Directory of Open Access Journals (Sweden)

    Mahantesh. Matur

    2014-12-01

    Full Text Available Effect of initial notch on the Fatigue crack growth of Aluminum 6061 specimen specified by ASTM is investigated. Growth rate obtained by experiment and numerical methods were compared. The values are in close agreement. The study shows the dependency of crack propagation on the stress intensity range of the Aluminum.

  18. Review: J-integral resistance curve testing and evaluation

    Institute of Scientific and Technical Information of China (English)

    Xian-kui ZHU

    2009-01-01

    In this paper a critical review is presented of the history and current state of the art of J-integral resistance curve testing and experimental evaluation methods in conjunction with a discussion of the development of the plane strain fracture toughness test standard ASTM E 1820 developed by American Society for Testing and Materials (ASTM). Early research efforts on this topic are reviewed first. These include the J-integral concept, experimental estimates of the J-integral for stationary cracks, load line displacement (LLD) and crack mouth opening displacement (CMOD) based η factor equations, different formulations of J-integral incremental equations for growing cracks, crack growth corrected J-R curve determination, and experimental test methods. Recent developments in J-R curve testing and evaluation are then described, with emphasis on accurate J-integral incremental equations,a normalization method, a modified basic method, a CMOD direct method with use of incremental equations, relationships of plastic geometry factors, constraint-dependent J-R curve testing and correction approaches. An overview of the present fracture toughness test standard ASTM E1820-08a is then presented. The review shows that after more than 40 years of investigation and development, the J-integral resistance curve test methods in ASTM E 1820 have become simpler, more cost-effective and more accurate.

  19. Effects of feeding and organism loading rate on PCB accumulation by Lumbriculus variegatus in sediment bioaccumulation testing

    Science.gov (United States)

    Sediment bioaccumulation test methods published by USEPA and ASTM in 2000 specify that the Lumbriculus variegatus, a freshwater oligochaete, should not be fed during the 28-day exposure and recommends an organism loading rate of total organic carbon in sediment to organism dry we...

  20. PENINGKATAN KUALITAS DAN PROSES PEMBUATAN BIODIESEL DARI BLENDING MINYAK KELAPA SAWIT (PALM OIL) DAN MINYAK KELAPA (COCONUT OIL) DAN BANTUAN GELOMBANG ULTRASONIK

    OpenAIRE

    Hantoro Satriadi; Favian Nafiega; W Widayat; Rheza Dipo

    2015-01-01

    Keterbatasan solar sebagai sumber energi bahan bakunya tidak dapat diperbaharui menuntut adanya bahan baku alternatif yang dapat diperbaharui dan ramah lingkungan untuk pembuatan biodiesel. Reaksi utama produksi biodiesel adalah esterifikasi dan transestirifikasi yang berlangsung lambat dan membutuhkan banyak katalis dan alkohol. Reaksi yang terjadi belum sempurna dan belum memenuhi standar SNI dan ASTM. Untuk memperbaiki mutu biodiesel serta menghasilkan yield maksimal, maka dilakukan blendi...

  1. 78 FR 35085 - Consensus Standards, Light-Sport Aircraft

    Science.gov (United States)

    2013-06-11

    ... Federal Aviation Administration Consensus Standards, Light-Sport Aircraft AGENCY: Federal Aviation... Light-Sport Aircraft rule issued July 16, 2004, and effective September 1, 2004. ASTM International Committee F37 on Light Sport Aircraft developed the new and revised standards with Federal...

  2. 77 FR 24251 - Consensus Standards, Light-Sport Aircraft

    Science.gov (United States)

    2012-04-23

    ... Federal Aviation Administration Consensus Standards, Light-Sport Aircraft AGENCY: Federal Aviation... and Light-Sport Aircraft rule issued July 16, 2004, and effective September 1, 2004. ASTM International Committee F37 on Light Sport Aircraft developed the new and revised standards with...

  3. 75 FR 70074 - Consensus Standards, Light-Sport Aircraft

    Science.gov (United States)

    2010-11-16

    ... Federal Aviation Administration Consensus Standards, Light-Sport Aircraft AGENCY: Federal Aviation... provisions of the Sport Pilot and Light-Sport Aircraft rule issued July 16, 2004, and effective September 1, 2004. ASTM International Committee F37 on Light Sport Aircraft developed the revised standards...

  4. STRESS CRACK TESTING OF POLYETHYLENE GEOMEMBRANES

    Science.gov (United States)

    The sensitivity of high density polyethylene (HDPE) geomembranes to stress cracking is evaluated under accelerated conditions at a constant stress. he test specimens are according to ASTM D-1822, and are of the dumbbell shape with a constant length in the central section. he acce...

  5. 46 CFR 108.497 - Fireman's outfits.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Fireman's outfits. 108.497 Section 108.497 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND..., Marine Inspection; (b) A Type II or Type III flashlight constructed and marked in accordance with ASTM...

  6. 21 CFR 177.2460 - Poly(2,6-dimethyl-1,4-phenylene) oxide resins.

    Science.gov (United States)

    2010-04-01

    .... Intrinsic viscosity is not less than 0.30 deciliter per gram as determined by ASTM method D1243-79, “Standard Test Method for Dilute Solution Viscosity of Vinyl Chloride Polymers,” which is incorporated by... incorporated by reference in paragraph (c)(1) of this section) with the reduced viscosity determined for...

  7. 21 CFR 177.1480 - Nitrile rubber modified acrylonitrile-methyl acrylate copolymers.

    Science.gov (United States)

    2010-04-01

    ...) Intrinsic viscosity in acetonitrile at 25 °C is not less than 0.29 deciliter per gram as determined by ASTM method D1243-79, “Standard Test Method for Dilute Solution Viscosity of Vinyl Chloride Polymers,”...

  8. CHARACTERIZATION OF REFERENCE ARTEMIA III FOR MARINE TOXICOLOGICAL STUDIES

    Science.gov (United States)

    ASTM Practice for Using Brine Shrimp Nauplii as Food for Test Animals in Aquatic Toxicology Tests (E 1203) suggests use of Reference Artemis as a reference standard for evaluating other batches of brine shrimp as food for organisms used in toxicology. in 1988, the U.S. EPA was ab...

  9. 21 CFR 177.2210 - Ethylene polymer, chloro-sulfonated.

    Science.gov (United States)

    2010-04-01

    ... specifications in this paragraph (b), titled “Chlorine and Bromine—Coulometric Titration Method by Aminco Chloridometer,” “Hypolon ® Synthetic Rubber—Determination of Sulfur by Parr Bomb,” and ASTM method D2857-70 (Reapproved 1977), “Standard Test Method for Dilute Solution Viscosity of Polymers,” are incorporated...

  10. 40 CFR 63.1349 - Performance testing requirements.

    Science.gov (United States)

    2010-07-01

    ... percent reduction in THC across the control device using the performance test requirements in 40 CFR part.../dscm mercury standard shall demonstrate compliance using EPA Method 29 of 40 CFR part 60. ASTM D6784-02... of THC shall demonstrate initial compliance with the THC limit by operating a continuous...

  11. 40 CFR 63.772 - Test methods, compliance procedures, and compliance demonstrations.

    Science.gov (United States)

    2010-07-01

    ... annual natural gas flowrate to a daily average by dividing the annual flowrate by the number of days per..., respectively, dry basis, kilogram per hour. Mij, Moj = Molecular weight of sample component j of the gas stream... this section. (i) Method 18 of 40 CFR part 60, appendix A, or (ii) ASTM D6420-99 (2004), Standard...

  12. BRONZE, ZINC, ALUMINUM, GALVANIZED STEEL: CORROSION RATES AS A FUNCTION OF SPACE AND TIME OVER THE UNITED STATES

    Science.gov (United States)

    A data base of existing metal corrosion data has been compiled by the National Bureau of Standards. The data base contains only exposure studies that were conducted according to standard ASTM procedures and had adequate documentation of the site characteristics and period of expo...

  13. 46 CFR 56.60-15 - Ductile iron.

    Science.gov (United States)

    2010-10-01

    ... (incorporated by reference; see 46 CFR 56.01-2). (b) Ductile iron castings conforming to ASTM A 395... 395 (incorporated by reference, see 46 CFR 56.01-2) may be used within the service restrictions and... 46 Shipping 2 2010-10-01 2010-10-01 false Ductile iron. 56.60-15 Section 56.60-15 Shipping...

  14. Evaluation of the Influence of Bromide or Iodide on the Performance the Amphipod Hyalella azteca in Reconstituted Waters

    Science.gov (United States)

    Survival, growth, or reproduction of the amphipod Hyalella azteca (HA) is reported to be poor when some reconstituted waters have been used to conduct chronic (>14-d) water-only or sediment toxicity tests, including ASTM reconstituted hard water (with no addition of Bromi...

  15. Brian Lassen - hea ja halva vahel / Kariina Tšursin

    Index Scriptorium Estoniae

    Tšursin, Kariina

    2014-01-01

    EMÜ Veterinaarmeditsiini ja Loomakasvatuse Instituudi vanemteadur Brian Lassen räägib oma tööst, põhimõtetest, kõrghariduse ja ülikooli sisust ja olemusest, oma eesmärkidest idamaiste võitluskunstide kõrgeima astme treenerina Baltimaades

  16. 77 FR 751 - Federal Motor Vehicle Safety Standards; Matters Incorporated by Reference

    Science.gov (United States)

    2012-01-06

    ...,'' revised 1966, into Sec. 571.116. (28) ASTM E274-65T, ``Tentative Method of Test for Skid Resistance of... of Test for Skid Resistance of Paved Surfaces Using a Full-Scale Tire,'' effective October 2, 1970... December 4, 2007, NHTSA published a final rule amending FMVSS No. 108 (72 FR 68234). The purpose of...

  17. Fire Safety Tests for Spherical Resorcinol Formaldehyde Resin: Data Summary Report

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Dong-Sang; Peterson, Reid A.; Schweiger, Michael J.

    2012-07-30

    A draft safety evaluation of the scenario for spherical resorcinol-formaldehyde (SRF) resin fire inside the ion exchange column was performed by the Hanford Tank Waste Treatment and Immobilization Plant (WTP) Fire Safety organization. The result of this draft evaluation suggested a potential change of the fire safety classification for the Cesium Ion Exchange Process System (CXP) emergency elution vessels, equipment, and piping, which may be overly bounding based on the fire performance data from the manufacturer of the ion exchange resin selected for use at the WTP. To resolve this question, the fire properties of the SRF resin were measured by Southwest Research Institute (SwRI), following the American Society for Testing and Materials (ASTM) standard procedures, through a subcontract managed by Pacific Northwest National Laboratory (PNNL). For some tests, the ASTM standard procedures were not entirely appropriate or practical for the SRF resin material, so the procedures were modified and deviations from the ASTM standard procedures were noted. This report summarizes the results of fire safety tests performed and reported by SwRI. The efforts by PNNL were limited to summarizing the test results provided by SwRI into one consolidated data report. All as-received SwRI reports are attached to this report in the Appendix. Where applicable, the precision and bias of each test method, as given by each ASTM standard procedure, are included and compared with the SwRI test results of the SRF resin.

  18. 40 CFR 60.17 - Incorporations by reference.

    Science.gov (United States)

    2010-07-01

    ....17, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed... Paint Materials by the Karl Fischer Titration Method, IBR approved for appendix A: Method 24, Section 6... for §§ 60.4360 and 60.4415(a)(1)(ii). (60) ASTM D4177-95, Standard Practice for Automatic Sampling...

  19. Salmonella Typhi shdA: pseudogene or allelic variant?

    Science.gov (United States)

    Urrutia, I M; Fuentes, J A; Valenzuela, L M; Ortega, A P; Hidalgo, A A; Mora, G C

    2014-08-01

    ShdA from Salmonella Typhimurium (ShdASTm) is a large outer membrane protein that specifically recognizes and binds to fibronectin. ShdASTm is involved in the colonization of the cecum and the Peyer's patches of terminal ileum in mice. On the other hand, shdA gene from Salmonella Typhi (shdASTy) has been considered a pseudogene (i.e. a nonfunctional sequence of genomic DNA) due to the presence of deletions and mutations that gave rise to premature stop codons. In this work we show that, despite the deletions and mutations, shdASTy is fully functional. S. Typhi ΔshdA mutants presented an impaired adherence and invasion of HEp-2 pre-treated with TGF-β1, an inducer of fibronectin production. Moreover, shdA from S. Typhi and S. Typhimurium seem to be equivalent since shdASTm restored the adherence and invasion of S. Typhi ΔshdA mutant to wild type levels. In addition, anti-FLAG mAbs interfered with the adherence and invasion of the S. Typhi shdA-3xFLAG strain. Finally, shdASTy encodes a detectable protein when heterologously expressed in Escherichia coli DH5α. The data presented here show that shdASTy is not a pseudogene, but a different functional allele compared with shdASTm. PMID:24859062

  20. 49 CFR 571.139 - Standard No. 139; New pneumatic radial tires for light vehicles.

    Science.gov (United States)

    2010-10-01

    ... reference of this material in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. A copy of ASTM F-1805-00... innerliner that extends to cord material. Outer diameter means the overall diameter of an inflated new tire... mechanical device made of rubber, chemicals, fabric and steel or other materials, that, when mounted on...

  1. Interlaboratory testing of 42-d Hyalella azteca survival, growth and reproduction method with sediment and water-only exposures

    Science.gov (United States)

    Over the past four years, USEPA-Duluth, USGS-Columbia, the Illinois Natural History Survey, and Environment Canada have conducted studies to refine the USEPA/ASTM International methods for conducting 10- to 42-d water or sediment toxicity exposures with Hyalella azteca. In advanc...

  2. Inter-lab testing of Hyalella azteca water and sediment methods: 1 background and overview of the 42-d survival, growth and reproduction test

    Science.gov (United States)

    Over the past four years, USEPA-Duluth, USGS-Columbia, the Illinois Natural History Survey, and Environment Canada have been conducting studies to refine the USEPA and ASTM International methods for conducting 10- to 42-d water or sediment toxicity exposures with the amphipod Hya...

  3. 46 CFR 177.410 - Structural fire protection.

    Science.gov (United States)

    2010-10-01

    ... an ASTM E-84 (incorporated by reference, see 46 CFR 175.600) flame spread rating of not more than 75... NPFC MIL-R-21607E(SH) (incorporated by reference, see 46 CFR 175.600). Resin systems that have not been... accordance with ABYC P-1 (incorporated by reference, see 46 CFR 175.600). (3) Fire detection...

  4. Lugemine ja kirjutamine põhikoolis / Mare Müürsepp

    Index Scriptorium Estoniae

    Müürsepp, Mare, 1958-

    2006-01-01

    Tutvustatakse Anne Uuseni doktoritööd "Põhikooli I ja II astme õpilaste kirjutamisoskus" ning konverentse "Humanistlik algõpetus. Lugemine. Kirjutamine. Mõtlemine" (Tallinn, 8.-9. juuni 2006) ja "Säästev areng, kultuur ja haridus" (Helsingi, 31. mai-3. juuni 2006)

  5. Cytotoxicity study of plasma-sprayed hydroxyapatite coating on high nitrogen austenitic stainless steels.

    Science.gov (United States)

    Ossa, C P O; Rogero, S O; Tschiptschin, A P

    2006-11-01

    Stainless steel has been frequently used for temporary implants but its use as permanent implants is restricted due to its low pitting corrosion resistance. Nitrogen additions to these steels improve both mechanical properties and corrosion resistance, particularly the pitting and crevice corrosion resistance. Many reports concerning allergic reactions caused by nickel led to the development of nickel free stainless steel; it has excellent mechanical properties and very high corrosion resistance. On the other hand, stainless steels are biologically tolerated and no chemical bonds are formed between the steel and the bone tissue. Hydroxyapatite coatings deposited on stainless steels improve osseointegration, due their capacity to form chemical bonds (bioactive fixation) with the bone tissue. In this work hydroxyapatite coatings were plasma-sprayed on three austenitic stainless steels: ASTM-F138, ASTM-F1586 and the nickel-free Böhler-P558. The coatings were analyzed by SEM and XDR. The cytotoxicity of the coatings/steels was studied using the neutral red uptake method by quantitative evaluation of cell viability. The three uncoated stainless steels and the hydroxyapatite coated Böhler-P558 did not have any toxic effect on the cell culture. The hydroxyapatite coated ASTM-F138 and ASTM-F1586 stainless steels presented cytotoxicity indexes (IC50%) lower than 50% and high nickel contents in the extracts. PMID:17122924

  6. 46 CFR 175.600 - Incorporation by reference.

    Science.gov (United States)

    2010-10-01

    ...(a) and 1 CFR part 51. To enforce any edition other than that specified in this section, the Coast... Piping (“ANSI B 31.1”) 182.710. Motor Vehicles Operating on Land Highways (“ANSI Z 26.1”) 177.1030. ASTM..., Standard Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion...

  7. Decolorization improves the fuel properties of algal biodiesel from Isochrysis sp.

    Science.gov (United States)

    Results from the comprehensive fuel testing according to the American Society for Testing and Materials International (ASTM) standards of an alkenone-free and decolorized biodiesel produced from the industrially grown marine microalgae Isochrysis sp. are presented. Fatty acid methyl ester (FAME) pro...

  8. 77 FR 7011 - Safety Standard for Infant Swings

    Science.gov (United States)

    2012-02-10

    ... intended for use with infants from birth until a child is able to sit up unassisted.'' ASTM F 2088-11b also... unassisted; and Never place travel swings on an elevated surface. D. Incident Data 1. Introduction There have... until infant can hold head up unassisted.'' Infant swings with a seat back angle greater than 50...

  9. 76 FR 19914 - Safety Standard for Portable Bed Rails: Notice of Proposed Rulemaking

    Science.gov (United States)

    2011-04-11

    ... Activity Concerning Portable Bed Rails In the Federal Register of October 3, 2000 (65 FR 58968), we... 28, 2010, 75 FR 22291). Other products that are not covered by ASTM F 2085-10a include: side rails... unassisted. They include bed rails that only have a vertical plane that presses against the side of...

  10. Tensile Properties for Application to Type I and II Waste Tank Flaw Stability Analysis

    International Nuclear Information System (INIS)

    Tensile testing to provide tensile test data for ASTM A285 steel for application to fracture analysis of Type I and Type II high level waste tanks has been completed. A total of 32 tensile tests were done on 8 heats of steel

  11. Loading and fracture response of CFRP-to-steel adhesively bonded joints with thick adherents – Part I: Experiments

    DEFF Research Database (Denmark)

    Anyfantis, Konstantinos; Tsouvalis, Nicholas G.

    2013-01-01

    There is a gap in the existing standardized testing procedures (ASTM and ISO) for evaluating the stiffness and strength of composite-to-metal adhesively bonded joints. Thus, there is much effort made in this field towards understanding the impact of the geometric parameters to the loading and fra...

  12. Effects of fabrication practices and techniques on the corrosion and mechanical properties of Ni-Cr-Mo nickel based alloys UNS N10276, N06022, N06686, and N06625

    International Nuclear Information System (INIS)

    Ni-Cr-Mo alloys have excellent resistance to both oxidizing and reducing type environments; however, heat treating, surface condition, welding, and type of welding consumable can have a significant affect on the corrosion resistance and mechanical properties of these alloys. It is also important when performing standard ASTM intergranular corrosion tests on welded test coupons to make an accurate comparison of alloys being tested. A standard weld procedure and consistent post-weld sample conditioning method should be incorporated into the comparison test program. An evaluation of the effect of various fabrication practices on the corrosion resistance of the alloy was performed using accelerated corrosion tests ASTM G28B. The fabrication conditions examined were as-welded, welded-pickled, welded-annealed-pickled, welded annealed ground, welded-ground, using over matching filler metals, and various levels of heat input. In addition to fabrication techniques, the effect of ASTM G28B test duration on corrosion rates of UNS N10276, N06022, N06686, and N06625 was evaluated. ASTM G28A intergranular corrosion and mechanical testing using welded coupons of UNS N06625 were also performed to determine the affect of post-weld annealing and aging heat treatments on the corrosion resistance and mechanical properties of UNS N06625

  13. Impact of fatty ester composition on low temperature properties of biodiesel-petroleum diesel blends

    Science.gov (United States)

    Several biodiesel fuels along with neat fatty acid methyl esters (FAMEs) commonly encountered in biodiesel were blended with ultra-low sulfur diesel (ULSD) fuel at low blend levels permitted by ASTM D975 (B1-B5) and cold flow properties such as cloud point (CP), cold filter plugging point (CFPP), an...

  14. 40 CFR 265.1101 - Design and operating standards.

    Science.gov (United States)

    2010-07-01

    ... industry such as the American Concrete Institute (ACI) and the American Society of Testing Materials (ASTM... wear surface). (2) A liquid collection and removal system to prevent the accumulation of liquid on the... conducted must be designed to prevent the release of liquids, wet materials, or liquid aerosols to...

  15. 21 CFR 177.1040 - Acrylonitrile/styrene copoly-mer.

    Science.gov (United States)

    2010-04-01

    ...: Substances Limitation Condensation polymer of toluene sulfonamide and formaldehyde 0.15 pct maximum. (c... of Polymer Extracted from Barex 210 Resin Pellets”; “Procedure for the Determination of Molecular... multilayer construction by ASTM method D-1434-82, “Standard Method for Determining Gas...

  16. 16 CFR 1500.43a - Method of test for flashpoint of volatile flammable materials.

    Science.gov (United States)

    2010-01-01

    ... Materials (ASTM), 1916 Race Street, Philadelphia, Pennsylvania 19103. Manufacturers and labelers of products... the bottom of the cup in a manner that provides efficient transfer of heat. An electronic heat control... specimen as evenly as possible over the bottom of the cup. (ii) If the sample cannot be loaded into...

  17. 2006 B100 Quality Survey Results: Milestone Report

    Energy Technology Data Exchange (ETDEWEB)

    Alleman, T. L.; McCormick, R. L.; Deutch, S.

    2007-05-01

    In 2006, the National Renewable Energy Laboratory conducted a nationwide quality survey of pure biodiesel (B100) intended to be used as a blendstock. The study collected random samples throughout the United States and analyzed them for quality against the current and proposed ASTM D6751 fuel quality specifications.

  18. 46 CFR 160.055-1 - Incorporation by reference.

    Science.gov (United States)

    2010-10-01

    ... Test Method for Water Absorption of Plastics—160.055-3 ASTM D 882-97, Standard Test Method for Tensile...: SPECIFICATIONS AND APPROVAL LIFESAVING EQUIPMENT Life Preservers, Unicellular Plastic Foam, Adult and Child, for... (Artificial Leather). CCC-C-426D—Cloth, Drill, Cotton. (3) Federal Standards: No. 191—Textile Test Methods....

  19. 40 CFR 80.335 - What gasoline sample retention requirements apply to refiners and importers?

    Science.gov (United States)

    2010-07-01

    ... certify that the procedures meet the requirements of the ASTM procedures required under 40 CFR 80.330. (d... 40 Protection of Environment 16 2010-07-01 2010-07-01 false What gasoline sample retention... PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) REGULATION OF FUELS AND FUEL ADDITIVES Gasoline...

  20. 30 CFR 75.833 - Handling high-voltage trailing cables.

    Science.gov (United States)

    2010-07-01

    ... incorporation by reference in accordance with 5 U.S.C. 522(a) and 1 CFR part 51. ASTM F496-02a may be obtained..._regulations/ibr_locations.html. (2) The rubber glove portion must be air-tested at the beginning of each shift... include the rubber gloves and leather outer protector gloves, or are using insulated cable handling...

  1. Evaluation of the susceptibility to intergranular corrosion in the nickel base alloy inconel 718

    International Nuclear Information System (INIS)

    The behaviour of the Inconel 718 relating to the intergranular corrosion resistance in asreceived condition and in two states of sensitization is studied. The recommendation insert inn the ASTM G-28 and DIN 50.914 has been followed. (E.G.)

  2. Guidelines for and evaluation of radiographic nondestructive tests of steel castings

    International Nuclear Information System (INIS)

    Various approaches to the guidelines for radiographic testing of steel castings and to the evaluation of their results are characterized. Attention is particularly paid to foreign standards (ASTM), to the standard valid at the Slatina corporation in Brno, and to the Czechoslovak regulation Classification of Defects in Castings by their Radiograms. (Z.M.)

  3. Psycholinguistic abilities in cochlear implant and hearing impaired children

    Directory of Open Access Journals (Sweden)

    Hatem Ezzeldin Hassan

    2014-03-01

    Conclusion: HI individuals have poor auditory short-term memory (A-STM in comparison to normal hearing individuals. Also, HI individuals have visual short-term memory (V-STM better than normal hearing individuals. So, multisensory training is needed both in therapy sessions and classrooms with more focus on visual stimuli.

  4. STEROID HORMONES AS BIOMARKERS OF ENDOCRINE DISRUPTION IN WILDLIFE. IN: ENVIRONMENTAL TOXICOLOGY AND RISK ASSESSMENT

    Science.gov (United States)

    Standardization of Biomarkers for Endocrine Disruption and Environmental Assessment. 8th Volume, ASTM STP 1364. D.S. Henshel, M.C. Black, and M.C. Harrass, Editors. American Society for Testing and Materials, West Conshohocken, PA. Pp. 254-270.

  5. 40 CFR Appendix A to Subpart D of... - Tables

    Science.gov (United States)

    2010-07-01

    ... of dilute exhaust through CVS at STP m3/hr QS Gas flow rate m3/min RSTP Ideal gas constant at STP m3/mole R2 Fuel carbon weight fraction g/g STP Standard temperature and pressure t Elapsed time for test... Item Property Tolerance Procedure (ASTM) 1 Sulfur, ppm max 1000 D 2622 Benzene, max. percent 1.5 D...

  6. New improved method for evaluation of growth by food related fungi on biologically derived materials

    DEFF Research Database (Denmark)

    Bergenholtz, Karina P.; Nielsen, Per Væggemose

    2002-01-01

    Biologically derived materials, obtained as commercial and raw materials (Polylactate (PLA), Polyhydroxybutyrate (PHB), potato, wheat and corn starch) were tested for their ability to support fungal growth using a modified ASTM G21-96 (American Society for Testing and Materials) standard as well...

  7. NMR analysis of biodiesel

    Science.gov (United States)

    Biodiesel is usually analyzed by the various methods called for in standards such as ASTM D6751 and EN 14214. Nuclear magnetic resonance (NMR) is not one of these methods. However, NMR, with 1H-NMR commonly applied, can be useful in a variety of applications related to biodiesel. These include monit...

  8. Groundwater Protection through Prevention. A Curriculum for Agricultural Education in Secondary Schools.

    Science.gov (United States)

    Iowa State Univ. of Science and Technology, Ames. Dept. of Agricultural Education.

    Water is one of the natural resources vital to any agricultural system. This material was developed in support of the Iowa Agricultural Science, Technology and Marketing (ASTM) program, focusing on groundwater educational concepts related to the 1987 Iowa Groundwater Protection Act. This material was designed to assist teachers in providing…

  9. 49 CFR 179.100-10 - Postweld heat treatment.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Postweld heat treatment. 179.100-10 Section 179...-10 Postweld heat treatment. (a) After welding is complete, steel tanks and all attachments welded... treatment is prohibited. (c) Tank and welded attachments, fabricated from ASTM A 240/A 240M (IBR, see §...

  10. Cracking in electron beam welding of low alloy steels

    International Nuclear Information System (INIS)

    The study of the cracking in electron beam welding of low alloy steel plates (steel ASTM-A387 gr 22) of high thickness shows that the welding speed to be the essential parameter. A low speed improves the resistance to cracking. The low segregation obtained with this process minimizes the effect of impurities

  11. 77 FR 66703 - Safety Standard for Infant Swings

    Science.gov (United States)

    2012-11-07

    ... JPMA- certified infant swings. ] C. Incident Data 1. Introduction The preamble to the NPR (77 FR 7012... Swings, with several modifications to strengthen the standard. 77 FR 7011. In this document, the... strengthen the voluntary standard. See 77 FR 12182. Since the publication of this notice, ASTM has...

  12. Statistical evaluation of fracture toughness of fine grained steels in the transition region

    International Nuclear Information System (INIS)

    In the following works on the derivation of the fracture toughness from a newly drafted ASTM Standard based on the Master Curve approach and the obtained correlations between fracture toughness and Charpy toughness will be presented for two typical modern structural steels of the thermomechanically rolled type with yield strength of 355 and 460 MPa and excellent toughness and weldability. (orig./DGE)

  13. High Efficiency Spectrum Splitting Prototype Submodule Using Commercial CPV Cells (Presentation)

    Energy Technology Data Exchange (ETDEWEB)

    Keevers, M.; Lau, J.; Green, M.; Thomas, I.; Lasich, J.; King, R.; Emery, K.

    2014-11-01

    This presentation summarizes progress on the design, fabrication and testing of a proof-of-concept, prototype spectrum splitting CPV submodule using commercial CPV cells, aimed at demonstrating an independently confirmed efficiency above 40% at STC (1000 W/m2, AM1.5D ASTM G173-03, 25 degrees C).

  14. 40 CFR Appendix G to Part 50 - Reference Method for the Determination of Lead in Suspended Particulate Matter Collected From...

    Science.gov (United States)

    2010-07-01

    ... lead content of the sample is analyzed by atomic absorption spectrometry using an air-acetylene flame... Recommended Practices for Atomic Absorption Spectrometry.” ASTM Book of Standards, part 30, pp. 1596-1608... described in appendix B to this part. 5.2 Analysis. 5.2.1 Atomic absorption spectrophotometer. Equipped...

  15. 49 CFR 171.10 - Units of measure.

    Science.gov (United States)

    2010-10-01

    ... abbreviated. (c) Conversion values. (1) Conversion values are provided in the following table and are based on values provided in ASTM E 380, “Standard for Metric Practice”. (2) If an exact conversion is needed, the following conversion table should be used. Table of Conversion Factors for SI Units Measurement SI to...

  16. Discussion on the Method of MTO Methanol Product Potassium Permanganate Time Analysis%MTO级甲醇产品高锰酸钾时间分析方法的探讨

    Institute of Scientific and Technical Information of China (English)

    杨少林

    2015-01-01

    根据ASTM E 34-2003[1]、 ASTM D1363-2006[2]、 GB/T6324.3-2011[3]等工业甲醇的高锰酸钾试验标准,文章对甲醇产品锰酸钾时间分析方法进行了探讨。此分析的目的是确定一个观测数值或大概计算数值与相关国家技术规范的符合性,分析结果应修约到与技术规范限值的小数点保留位数相一致。此分析方法适用于在甲醇及MTO级中存在有能还原高锰酸甲杂质的测定。%According to the standards about Potassium Permanganate test and other industrial methanol, such as ASTM E 34-2003 , ASTM D1363-2006 , GB/T6324.3-2011 , etc., the method of methanol product potassium permanganate time analysis was discussed. The purpose of this analysis was to determine an observed or calculated values for the compliance relevant technical standards compliance. The results should be rounded to the right of the decimal point number was consistent with the specification limits. This method was suitable for testing methanol and MTO methanol in detection can restore a permanganate impurities.

  17. Analysis of Biodiesel Blends Samples Collected in the United States in 2008 (Revised)

    Energy Technology Data Exchange (ETDEWEB)

    Alleman, T. L.; Fouts, L.; McCormick, R. L.

    2010-12-01

    NREL sampled and tested the quality of U.S. B20 (20% biodiesel, 80% petroleum diesel) in 2008; 32 samples from retail locations and fleets were tested against a proposed ASTM D7467 B6-B20 specification, now in effect.

  18. Degradation Testing of Fluorotelomer-based polymers (FTPs)

    Science.gov (United States)

    Over the last decade, concern about sources of per and polyfluorochemicals (PFCs) have led to an increasing need for information on the microbial and/or abiotic degradation of polymer materials that contain PFC structural fragments that may be released. EPA, OECD, ASTM and other...

  19. Effects of monoacylglycerols on low-temperature viscosity and cold filter plugging point of biodiesel

    Science.gov (United States)

    Biodiesel is composed of mono-alkyl fatty acid esters made from the transesterification of vegetable oil or animal fat with methanol or ethanol. Biodiesel must meet rigorous standard fuel specifications (ASTM D 6751; CEN EN 14214) to be classified as an alternative fuel. Nevertheless, biodiesel that...

  20. Evaluación de la corrosión por picadura en aluminio AA1050

    Directory of Open Access Journals (Sweden)

    Luis Garita-Arce

    2014-09-01

    Los ensayos realizados según la norma ASTM G100- 89 para las aleaciones consideradas no indicaron diferencias significativas, aunque sí se observó que la aleación AA1050 presenta mayor susceptibilidad a la picadura en ámbitos de un pH= 7 y con deformaciones elevadas.

  1. 46 CFR 56.50-105 - Low-temperature piping.

    Science.gov (United States)

    2010-10-01

    ... ASTM standards listed in table 56.50-105 are incorporated by reference; see 46 CFR 56.01-2. ... 46 Shipping 2 2010-10-01 2010-10-01 false Low-temperature piping. 56.50-105 Section 56.50-105... APPURTENANCES Design Requirements Pertaining to Specific Systems § 56.50-105 Low-temperature piping. (a) Class...

  2. 7 CFR 1755.860 - RUS specification for filled buried wires.

    Science.gov (United States)

    2010-01-01

    ... accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of ANSI/EIA 359-A-84 are available for inspection.... 552(a) and 1 CFR part 51. Copies of the ASTM standards are available for inspection during normal... 7 Agriculture 11 2010-01-01 2010-01-01 false RUS specification for filled buried wires....

  3. 40 CFR 63.997 - Performance test and compliance assessment requirements for control devices.

    Science.gov (United States)

    2010-07-01

    ... concentration at the outlet of a control device, use Method 18 of 40 CFR part 60, appendix A, or ASTM D6420-99... CFR part 63, appendix A, to measure formaldehyde at the inlet and outlet of the control device. Use... compliance assessment requirements for control devices. (a) Performance tests and flare...

  4. Survey of Flex Fuel in 2014. CRC Project E-85-3

    Energy Technology Data Exchange (ETDEWEB)

    Alleman, Teresa L. [National Renewable Energy Laboratory (NREL), Golden, CO (United States)

    2015-07-27

    ASTM D5798 sets the specifications for Ethanol Flex Fuel, which currently permits between 51 volume percent (vol%) and 83 vol% ethanol. The vapor pressure varies seasonally and geographically and is divided into four distinct classes to ensure year-round driveability. This project is the first survey of Ethanol Flex Fuel since these specification changes were made to Specification D5798.

  5. Round robin test for zirconium alloys in 400 deg C steam: results from EDF

    International Nuclear Information System (INIS)

    The EDF Material Studies Branch has participated in the Round Robin program of uniform corrosion on zirconium alloys. The objectives of these Round Robin corrosion tests are to generate new uniform corrosion weight gain date utilizing modern zirconium alloy products and to improve the International and ASTM standards. (author). 2 tabs., 7 appendix., 2 refs

  6. The influence of non-metallic elements in the mechanical properties of 20 Mn Mo Ni 55 steel

    International Nuclear Information System (INIS)

    Usual methods for determining non-metallic elements in steels are studied. Those methods are: a) Standard methods of ASTM and ISO and b) Modern and fast methods of detection, non-standard. The steel used was 20 Mn Mo Ni 55. (E.G.)

  7. Life Prediction/Reliability Data of Glass-Ceramic Material Determined for Radome Applications

    Science.gov (United States)

    Choi, Sung R.; Gyekenyesi, John P.

    2002-01-01

    Brittle materials, ceramics, are candidate materials for a variety of structural applications for a wide range of temperatures. However, the process of slow crack growth, occurring in any loading configuration, limits the service life of structural components. Therefore, it is important to accurately determine the slow crack growth parameters required for component life prediction using an appropriate test methodology. This test methodology also should be useful in determining the influence of component processing and composition variables on the slow crack growth behavior of newly developed or existing materials, thereby allowing the component processing and composition to be tailored and optimized to specific needs. Through the American Society for Testing and Materials (ASTM), the authors recently developed two test methods to determine the life prediction parameters of ceramics. The two test standards, ASTM 1368 for room temperature and ASTM C 1465 for elevated temperatures, were published in the 2001 Annual Book of ASTM Standards, Vol. 15.01. Briefly, the test method employs constant stress-rate (or dynamic fatigue) testing to determine flexural strengths as a function of the applied stress rate. The merit of this test method lies in its simplicity: strengths are measured in a routine manner in flexure at four or more applied stress rates with an appropriate number of test specimens at each applied stress rate. The slow crack growth parameters necessary for life prediction are then determined from a simple relationship between the strength and the applied stress rate. Extensive life prediction testing was conducted at the NASA Glenn Research Center using the developed ASTM C 1368 test method to determine the life prediction parameters of a glass-ceramic material that the Navy will use for radome applications.

  8. Evaluation of a simple weight-loss method for determining the permeation of organic liquids through rubber films.

    Science.gov (United States)

    Mickelsen, R L; Hall, R C; Chern, R T; Myers, J R

    1991-10-01

    The standard ASTM method for determining permeation of liquid penetrants through polymeric films (F739-85) was compared with a simple weight-loss method. The weight-loss permeation cell was constructed of off-the-shelf components, a conventional analytical balance was used to measure the weight loss, and a chamber with continuous ventilation was used to hold the cell at constant temperature and evacuate the permeating penetrant. The advantages and limitations of the weight-loss method were illustrated by using data obtained from the permeation of acetonitrile, n-hexane, and methanol through films of four acrylonitrile-butadiene copolymers. The steady-state flux obtained by using the weight-loss method gave results statistically equivalent to the more analytically complex ASTM standard method. The weight-loss method required the experimenter to monitor the weight of the cell and its contents over time to obtain the steady-state flux whereas the ASTM method required the experimenter to chemically analyze for the penetrant concentration in the effluent gas stream as a function of time. The ASTM method required more analytical skill and training and more costly analytical equipment than did the simple weight-loss method. The weight-loss method needs further improvement and validation but shows promise even in its present form. By using the weight-loss method, the potential exists for far more chemical protective clothing users to conduct their own low-cost permeation testing as an initial screening to determine the relative permeation performance of candidate protective clothing materials. The weight-loss method is not meant to replace the standard ASTM method but to supplement it as a screening test. PMID:1951056

  9. Final Report, Volume 4, The Develpoment of Qualification Standards forCast Super Duplex Stainless Steel (2507 Wrought Equivalent)

    Energy Technology Data Exchange (ETDEWEB)

    Hariharan, Vasudevan; Lundin, Carl, D.

    2005-09-30

    The objective of the program is to determine the suitability of ASTM A923 Standard Test methods for Detecting Detrimental Intermetallic Phase in Wrought Duplex Austenitic-Ferritic Stainless Steels for 25 Cr Cast Super Duplex Stainless Steels (ASTM A890-5A). Different tests were carried out on the materials procured from various steel foundries as stated in the ASTM A923. The foundries were designated as Foundry A, B, C and D. All the materials were foundry solution annealed. Materials from Foundry D were solution heat treated at The University of Tennessee also and then they were subjected to heat treatment schedule which was derived from the testing of wrought DSS to establish the A923 specification. This was possible because the material from the same heat was sufficient for conducting the full scope of heat treatment. This was done prior to carrying out various other tests. Charpy samples were machined. The Ferrite content was measured in all the Charpy samples using Feritscope{reg_sign} and ASTM E562 Manual Point Count Method. After the ferrite content was measured the samples were sent to AMC-Vulcan, Inc. in Alabama to conduct the Charpy impact test based on ASTM A923 Test Method B. This was followed by etch testing and corrosion analysis based on ASTM A923 Test Methods A and C respectively at University of Tennessee. Hardness testing using Rockwell B and C was also carried out on these samples. A correlation was derived between all the three test methods and the best method for evaluating the presence of intermetallic in the material was determined. The ferrite content was correlated with the toughness values. Microstructural analysis was carried out on the etch test samples using Scanning Electron Microscopy in order to determine if intermetallic phases were present. The fracture surfaces from Charpy test specimens were also observed under SEM in order to determine the presence of any cracks and whether it was a brittle or a ductile fracture. A correlation

  10. Final Report, Volume 4, The Development of Qualification Standards for Cast Super Duplex Stainless Steel (2507 Wrought Equivalent)

    Energy Technology Data Exchange (ETDEWEB)

    Hariharan, Vasudevan; Lundin, Carl, W.

    2005-09-30

    The objective of the program is to determine the suitability of ASTM A923 Standard Test methods for Detecting Detrimental Intermetallic Phase in Wrought Duplex Austenitic-Ferritic Stainless Steels for 25 Cr Cast Super Duplex Stainless Steels (ASTM A890-5A). Different tests were carried out on the materials procured from various steel foundries as stated in the ASTM A923. The foundries were designated as Foundry A, B, C and D. All the materials were foundry solution annealed. Materials from Foundry D were solution heat treated at The University of Tennessee also and then they were subjected to heat treatment schedule which was derived from the testing of wrought DSS to establish the A923 specification. This was possible because the material from the same heat was sufficient for conducting the full scope of heat treatment. This was done prior to carrying out various other tests. Charpy samples were machined. The Ferrite content was measured in all the Charpy samples using Feritscope® and ASTM E562 Manual Point Count Method. After the ferrite content was measured the samples were sent to AMC-Vulcan, Inc. in Alabama to conduct the Charpy impact test based on ASTM A923 Test Method B. This was followed by etch testing and corrosion analysis based on ASTM A923 Test Methods A and C respectively at University of Tennessee. Hardness testing using Rockwell B and C was also carried out on these samples. A correlation was derived between all the three test methods and the best method for evaluating the presence of intermetallic in the material was determined. The ferrite content was correlated with the toughness values. Microstructural analysis was carried out on the etch test samples using Scanning Electron Microscopy in order to determine if intermetallic phases were present. The fracture surfaces from Charpy test specimens were also observed under SEM in order to determine the presence of any cracks and whether it was a brittle or a ductile fracture. A correlation was

  11. Atomic Mass and Nuclear Binding Energy for Bh-351 (Bohrium)

    Science.gov (United States)

    Sukhoruchkin, S. I.; Soroko, Z. N.

    This document is part of the Supplement containing the complete sets of data of Subvolume B `Nuclei with Z = 55 - 100' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Börnstein - Group I `Elementary Particles, Nuclei and Atoms', and additionally including data for nuclei with Z = 101 - 130. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Bh-351 (Bohrium, atomic number Z = 107, mass number A = 351).

  12. Operational use of nowcasting methods for hydrological forecasting by the Czech Hydrometeorological Institute

    Czech Academy of Sciences Publication Activity Database

    Březková, L.; Novák, P.; Šálek, M.; Kyznarová, H.; Jonov, M.; Frolík, P.; Sokol, Zbyněk

    Vol. 351. WALLINGFORD : INT ASSOC HYDROLOGICAL SCIENCES, INST OF HYDROLOGY, 2012 - (Moore, R.; Cole, S.; Illingworth, A.), s. 490-495 ISBN 978-1-907161-26-1. ISSN 0144-7815. - (IAHS Publication). [International Symposium on Weather Radar and Hydrology. Exeter (GB), 18.04.2011-21.04.2011] Institutional support: RVO:68378289 Keywords : flash flood * rainfall-runoff model * hydrological forecast * weather radar * heavy precipitation Subject RIV: DG - Athmosphere Sciences, Meteorology http://iahs.info/redbooks/a351/abs_351_0490.pdf

  13. An Improved Approach for Analyzing the Oxygen Compatibility of Solvents and other Oxygen-Flammable Materials for Use in Oxygen Systems

    Science.gov (United States)

    Harper, Susan A.; Juarez, Alfredo; Peralta, Stephen F.; Stoltzfus, Joel; Arpin, Christina Pina; Beeson, Harold D.

    2016-01-01

    Solvents used to clean oxygen system components must be assessed for oxygen compatibility, as incompatible residue or fluid inadvertently left behind within an oxygen system can pose a flammability risk. The most recent approach focused on solvent ignition susceptibility to assess the flammability risk associated with these materials. Previous evaluations included Ambient Pressure Liquid Oxygen (LOX) Mechanical Impact Testing (ASTM G86) and Autogenous Ignition Temperature (AIT) Testing (ASTM G72). The goal in this approach was to identify a solvent material that was not flammable in oxygen. As environmental policies restrict the available options of acceptable solvents, it has proven difficult to identify one that is not flammable in oxygen. A more rigorous oxygen compatibility approach is needed in an effort to select a new solvent for NASA applications. NASA White Sands Test Facility proposed an approach that acknowledges oxygen flammability, yet selects solvent materials based on their relative oxygen compatibility ranking, similar to that described in ASTM G63-99. Solvents are selected based on their ranking with respect to minimal ignition susceptibility, damage and propagation potential, as well as their relative ranking when compared with other solvent materials that are successfully used in oxygen systems. Test methods used in this approach included ASTM G86 (Ambient Pressure LOX Mechanical Impact Testing and Pressurized Gaseous Oxygen (GOX) Mechanical Impact Testing), ASTM G72 (AIT Testing), and ASTM D240 (Heat of Combustion (HOC) Testing). Only four solvents were tested through the full battery of tests for evaluation of oxygen compatibility: AK-225G as a baseline comparison, Solstice PF, L-14780, and Vertrel MCA. Baseline solvent AK-225G exhibited the lowest HOC and highest AIT of solvents tested. Nonetheless, Solstice PF, L-14780, and Vertrel MCA HOCs all fell well within the range of properties that are associated with proven oxygen system materials

  14. Effect of temperature on the fracture toughness in the nuclear reactor pressure vessel steel (SA508-3)

    International Nuclear Information System (INIS)

    The elastic-plastic fracture toughness JIC of the Nuclear Reactor Pressure Vessel Steel (SA508-3) which has high toughness was obtained at three temperatures (room temperature, -20 C, 200 C) using a 1/2 CT specimen. Especially the two methods recommended in ASTM and JSME were compared. It was found that difficulty exists in obtaining JIC by ASTM R-curve method, while JSME R-curve method yielded good results. The stretched zone width method gave slightly larger JIC values than those by the R-curve method for SA508-3 steel and the blunting line was not affected by the test temperatures. The relation between SZW and J, SZW and J/E and SZW and J/σys before initiation of a stable crack growth in the fracture toughness test at three temperatures is described

  15. EFECTO DEL PRECALENTAMIENTO Y LA SEVERIDAD DE TEMPLE SOBRE LA RESISTENCIA AL DESGASTE ADHESIVO DEL ACERO AUSTENÍTICO AL MANGANESO

    Directory of Open Access Journals (Sweden)

    OSCAR FABIÁN HIGUERA COBOS

    2010-01-01

    Full Text Available En este trabajo de investigación se estudió el efecto del precalentamiento y la severidad de temple sobre la resistencia al desgaste adhesivo del acero austenítico al manganeso ASTM A 128 grado C. El material se sometió a ciclos térmicos de temple y revenido con y sin precalentamiento con el fin de evaluar su influencia sobre la resistencia al desgaste. Posteriormente el material fue sometido a prueba según norma ASTM G83 y se determinó que el acero Austenítico al manganeso, es un material que presenta una microestructura metaestable en condiciones estables y no debe ser sometido a tratamiento térmico de revenido a altas temperaturas debido que favorece la descomposición de esta a ferrita (fase blanda de los acero y por ende disminuye su resistencia al desgaste.

  16. Combustion Properties of Laminated Veneer Lumbers Bonded With PVAc, PF Adhesives and Impregnated With Some Chemicals = Bazi Kimyasallarla Emprenye Edilmiş ve PF ve PVAc Tutkali ile Yapıştırılan Lamine Ağaç Malzemelerin Yanma Özellikleri

    Directory of Open Access Journals (Sweden)

    Şeref KURT

    2006-01-01

    Full Text Available In this study, it has been investigated that the effects of impregnation materials that are (NH32P, Al2(SO43, K2CO3, Cacl, Zncl2, on combustion properties of 3 ply laminated veneer lumbers (LVL produced from fir (Abies bornmülleriana Mattf. by using of phenol-formaldehyde (PF, polyvinyl acetate (PVAc. The pressure - vacuum method was used for impregnation process. Combustion test was performed according to the procedure of ASTM-E 69 standards. As a result; zinc chloride was found to be the most successful fire retardant chemical in LVL at PF adhesive. Since it diminishes combustion, the impregnation of LVL produced from fir by using PF adhesive can be advised to be impregnated by using pressure vacuum method.

  17. Quality assurance in CANDU-type fuel manufacturing

    International Nuclear Information System (INIS)

    This paper is concerned with fabrication of UO2 pellets from UO2 powder by powder metallurgical methods (pelletizing and sintering). The effect of ejection to molding force ratio on the fired pellets properties was studied. It is observed that pellets cold-pressed at ratio less than 75% is cracked to two parts. The effect of the sintering temperature on the fired pellets properties was studied. It was found that the sintering of UO2 pellets at 1650 deg C leads to production of pellets within the qualification requirements. The data and information available in the ASTM for each step in UO2 pellets fabrication process and the technical experience (gained or published) are transformed into a group of logic flow charts (LFC'S). These logic flow charts are collected to form a module of a software to qualify the sintered pellets and also gives a technical assistance according to the ASTM for each step in the fabrication process. (author)

  18. Size and deformation limits to maintain constraint in KIc and Jc testing of bend specimens

    International Nuclear Information System (INIS)

    The ASTM Standard Test Method for Plane-Strain Fracture Toughness of metallic Materials (E399-90) restricts test specimen dimensions to insure the measurement of highly constrained fracture toughness values (KIc). These requirements insure small-scale yielding (SSY) conditions at fracture, and thereby the validity of linear elastic fracture mechanics. Recently, Dodds and Anderson have proposed a less restrictive size requirement for cleavage fracture toughness measured in terms of the J-integral (Jc), as given by a, b, B ≥ 200 Jc/σ0. The size requirement proposed by Dodds and Anderson increases the applicability of fracture toughness experiments by expanding the range of conditions over which fracture toughness data meeting SSY conditions can be reliably measured. This investigation compares the proposed size requirement with that of ASTM Standard Test Method E399 and, by comparison with published experimental data for various alloys, provides validation of the new requirements

  19. 9 Cr-- 1 Mo steel material for high temperature application

    Science.gov (United States)

    Jablonski, Paul D; Alman, David; Dogan, Omer; Holcomb, Gordon; Cowen, Christopher

    2012-11-27

    One or more embodiments relates to a high-temperature, titanium alloyed, 9 Cr-1 Mo steel exhibiting improved creep strength and oxidation resistance at service temperatures up to 650.degree. C. The 9 Cr-1 Mo steel has a tempered martensite microstructure and is comprised of both large (0.5-3 .mu.m) primary titanium carbides and small (5-50 nm) secondary titanium carbides in a ratio of. from about 1:1.5 to about 1.5:1. The 9 Cr-1 Mo steel may be fabricated using exemplary austenizing, rapid cooling, and tempering steps without subsequent hot working requirements. The 9 Cr-1 Mo steel exhibits improvements in total mass gain, yield strength, and time-to-rupture over ASTM P91 and ASTM P92 at the temperature and time conditions examined.

  20. Enhancement of Aviation Fuel Thermal Stability Characterization Through Application of Ellipsometry

    Science.gov (United States)

    Browne, Samuel Tucker; Wong, Hubert; Hinderer, Cameron Branch; Klettlinger, Jennifer

    2012-01-01

    ASTM D3241/Jet Fuel Thermal Oxidation Tester (JFTOT) procedure, the standard method for testing thermal stability of conventional aviation turbine fuels is inherently limited due to the subjectivity in the color standard for tube deposit rating. Quantitative assessment of the physical characteristics of oxidative fuel deposits provides a more powerful method for comparing the thermal oxidation stability characteristics of fuels, especially in a research setting. We propose employing a Spectroscopic Ellipsometer to determine the film thickness and profile of oxidative fuel deposits on JFTOT heater tubes. Using JP-8 aviation fuel and following a modified ASTM D3241 testing procedure, the capabilities of the Ellipsometer will be demonstrated by measuring oxidative fuel deposit profiles for a range of different deposit characteristics. The testing completed in this report was supported by the NASA Fundamental Aeronautics Subsonics Fixed Wing Project

  1. On the Strain Rate Sensitivity of Abs and Abs Plus Fused Deposition Modeling Parts

    Science.gov (United States)

    Vairis, A.; Petousis, M.; Vidakis, N.; Savvakis, K.

    2016-06-01

    In this work the effect of strain rate on the tensile strength of fused deposition modeling parts built with Acrylonitrile-butadiene-styrene (ABS) and ABS plus material is presented. ASTM D638-02a specimens were built with ABS and ABS plus and they were tested on a Schenck Trebel Co. tensile test machine at three different test speeds, equal, lower, and higher to the test speed required by the ASTM D638-02a standard. The experimental tensile strength results were compared and evaluated. The fracture surfaces of selected specimens were examined with a scanning electron microscope, to determine failure mode of the filament strands. It was found that, as the test speed increases, specimens develop higher tensile strength and have higher elastic modulus. Specimens tested in the highest speed of the experiment had on average about 10% higher elastic modulus and developed on average about 11% higher tensile strength.

  2. Characteristic evaluation of acoustic emission sensors

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Hyun Kyu; Joo, Y. S.; Lee, N. H

    2000-12-01

    This report introduces the various kinds of Acoustic Emission(AE) sensors as well as the basic principle of AE sensors in order to select AE sensor suitably. The described sensors include : high sensitivity sensor, broadband sensor, underwater sensor, miniature sensor, directional sensor, integral pre-amplifier sensor. Sensor has two critical aspects of reliability and repeatability. For the high reliability, sensor has to be calibrated in accordance with ASTM standard E 1106 which explains to measure the characteristics of AE sensor accurately. For investigating the degradation of AE sensor under the severe environment for example the high radiation condition, It is important to perform the repeatability test which is described in detail in according to the ASTM standard E 976. Two kinds of AE sensor applications are also summarized.

  3. Characteristic evaluation of acoustic emission sensors

    International Nuclear Information System (INIS)

    This report introduces the various kinds of Acoustic Emission(AE) sensors as well as the basic principle of AE sensors in order to select AE sensor suitably. The described sensors include : high sensitivity sensor, broadband sensor, underwater sensor, miniature sensor, directional sensor, integral pre-amplifier sensor. Sensor has two critical aspects of reliability and repeatability. For the high reliability, sensor has to be calibrated in accordance with ASTM standard E 1106 which explains to measure the characteristics of AE sensor accurately. For investigating the degradation of AE sensor under the severe environment for example the high radiation condition, It is important to perform the repeatability test which is described in detail in according to the ASTM standard E 976. Two kinds of AE sensor applications are also summarized

  4. System qualification of Digital Detector Array (DDA)

    Energy Technology Data Exchange (ETDEWEB)

    Azeredo, Soraia R.; Oliveira, Davi F.; Nascimento, Joseilson R.; Lopes, Ricardo T., E-mail: soraia@lin.ufrj.br [Coordenacao dos Programas de Pos-Graducao em Engenharia (LIN/COPPE/UFRJ), Rio de Janeiro, RJ (Brazil). Lab. de Instrumentacao Nuclear

    2013-07-01

    Digital Detector Arrays (DDAs) should be characterized to establish the operating conditions of the system prior to perform a NDT (Nondestructive Testing). The image quality in digital radiography depends on the exposure conditions and the properties of the digital detectors. Quantitative definitions of DDA characterization parameters are important to discussions about achieved image quality of a particular type of DDA and also contribute to quantitative comparison of DDAs so that an appropriate digital detector is selected to meet NDT requirements. Evaluations of DDA factors were performed as defined by the standard practice for manufacturing characterization of DDAs, ASTM E2597-07. The evaluations provided quantitative results of some characteristic parameters. The factors evaluated were: basic spatial resolution, achievable contrast sensitivity, specific material thickness range and image lag. The results of measurements of characterization parameters are presented and related with the definitions in ASTM E2597-07. (author)

  5. Influence of mechanical effect due to MRI-magnet on tattoo seal and eye makeup

    International Nuclear Information System (INIS)

    The purpose of our study was to assess the mechanical effect on tattoo seals and eye makeup caused by a spatial magnetic gradient in the magnetic resonance imaging (MRI) system. Seven kinds of tattoo seals and three kinds of eye makeup, i.e., mascara, eye shadow, and eyeliner were used. On a 3.0-Tesla MRI, we determined these deflection angles according to a method established by the American Society for Testing and Materials (ASTM) at the position that produced the greatest magnetically induced deflection. Eighty-five percent of the tattoo seals showed deflection angles greater than 45 degrees of the ASTM guidelines, and the mascara and eye shadow showed over 40 degrees. This was because these contained ferromagnetic pigments such as an iron oxide, but those translational forces were very small owing to slight mass. However, it is desirable that these should be removed before MRI examination to prevent secondary problems. (author)

  6. The development of consensus standards on dosimetry for radiation processing

    International Nuclear Information System (INIS)

    Subcommittee E10.01 open-quotes Dosimetry for Radiation Processingclose quotes of the American Society for Testing and Materials (ASTM), comprised of 165 diverse experts from 45 countries, is developing standards on dosimetry for radiation processing. Eight standards will be published in the 1992 Annual Book of ASTM Standards and an additional 16 are under development. Three are specifically for food applications and the balance are relevant for all radiation processing applications, including food processing. When complete, the set will be published as a separate handbook. In addition, the group encourages the use of these standards through publications, workshops, and training courses; and identifies areas where new standards are needed. A related effort is underway to promote the inclusion of these standards into procedures now being developed by groups such as the International Organization of Legal Metrology (OIML) and the International Consultative Group on Food Irradiation (ICGFI) to harmonize regulations and help avoid trade barriers

  7. Determination of naphthenic acid profile in Ghana's Jubilee Oil using gas chromatography-mass spectrometry

    International Nuclear Information System (INIS)

    Crude oil is the life-blood of the global economy. Its importance stems from the fact that it is a base product for a wide variety of goods [Drugs, Plastics, Liquefied Petroleum Gas (LPG)]. The oil discovery (over 3 billion barrel reserves in hydrocarbon and gas), about 60 km offshore between the Deepwater Tano and Cape Three Points Block in South western Ghana is a valuable natural asset and it has the potential of boosting the Ghanaian economy. During petroleum processing, various waste products are generated. One of such products is Naphthenic acids (NA). Naphthenic acids are organic acids naturally occurring in crude oil and a constituent of waste associated with oil refinery. Naphthenic acids serve as biomarkers for identification of the source of crude oil. The presence of Naphthenic acid in the aquatic environment causes toxic effects due to their weak biodegradable nature; the toxicity of Naphthenic acids depends on the class of Naphthenic acids present in the crude oil. The study assessed the profile of Naphthenic acids in Ghana’s Jubilee crude oil using Low Resolution Electron Impact – Gas Chromatography Mass Spectrometry (LREI-GCMS) after isolation of Naphthenic acids in the Jubilee oil by a modified Kupchan’s Partitioning Process. The Mass Spectrometric (MS) Work Station Software was used for the identification of the Naphthenic acids present in the Jubilee crude oil. The quality of the Jubilee oil was also evaluated through the use of some key physico-chemical parameters [Total Acid Number (TAN), Sulphur Content, Viscosity, Pour Point, Flashpoint, Water Content and Densities] based on the American Standards for Testing and Materials (ASTM, 2007). The Total Acid Number was determined by Colorimetric Titration (ASTM D974); Sulphur Content by X-ray Fluorescent Spectrometry (ASTM D4294); Pour Point by the use of the SETA cloud and Pour Point Refrigerator Technique (ASTM D97); Viscosity by Gravity Timed Method (ASTM D445); Density by the Hydrometer

  8. Determination of ethanol and specific gravity in gasoline by distillation curves and multivariate analysis.

    Science.gov (United States)

    Aleme, Helga G; Costa, Letícia M; Barbeira, Paulo J S

    2009-06-15

    The partial least-squares regression method (PLS) was employed to predict the amount of ethanol and specific gravity in automotive gasoline using distillation curves (ASTM-D86). Additionally, a comparison was made between regression coefficients of all the algorithms, after selecting the number of latent variables. The low values obtained for RMSEC and RMSEP, associated with high accuracy when compared to the standard methodologies (NBR-13992, ASTM-D4052 and D1298) showed that PLS was efficient to determine the ethanol content and specific gravity in gasoline, since the model contains samples of different gasoline compositions, thus reflecting the variety of fuel in the Brazilian market. In addition, the proposed method is low cost, time reducing and easy to implement, as it utilizes the results of a routine assay carried out to evaluate the quality of automotive fuel. PMID:19362211

  9. Status of radiation processing dosimetry

    DEFF Research Database (Denmark)

    Miller, A.

    Several milestones have marked the field of radiation processing dosimetry since IMRP 7. Among them are the IAEA symposium on High Dose Dosimetry for Radiation Processing and the international Workshops on Dosimetry for Radiation Processing organized by the ASTM. Several standards have been or are...... being published by the ASTM in this field, both on dosimetry procedures and on the proper use of specific dosimeter systems. Several individuals are involved in this international cooperation which contribute significantly to the broader understanding of the role of dosimetry in radiation processing....... The importance of dosimetry is emphasized in the standards on radiation sterilization which are currently drafted by the European standards organization CEN and by the international standards organization ISO. In both standards, dosimetry plays key roles in characterization of the facility, in...

  10. Propiedades mecánicas de uniones obtenidas mediante soldadura por difusión dinámica en un acero de media aleación

    Directory of Open Access Journals (Sweden)

    Gómez de Salazar, J. M.

    2001-04-01

    Full Text Available Mechanical properties in Dynamic Diffusion Bonded (DDB in a A.S.T.M. 1045 steel (0.45 %C joints were studied. The thermomechanical cycle added to the process, favours both the initial deformation stage and probably the diffusion mechanism which participate in bond formation.

    En el presente trabajo se estudian las propiedades mecánicas de uniones obtenidas mediante Soldadura por Difusión Dinámica (SDD en un acero ASTM 1045 (0,45 %C. La aplicación de ciclos termomecánicos en el proceso favorece las etapas iniciales de deformación y, probablemente, los mecanismos difusivos que participan en la formación de la unión.

  11. A standardized evaluation of artifacts from metallic compounds during fast MR imaging

    DEFF Research Database (Denmark)

    Murakami, Shumei; Verdonschot, Rinus G; Kataoka, Miyoshi;

    2016-01-01

    OBJECTIVE: Metallic compounds present in the oral and maxillofacial regions (OMR) cause large artifacts during MR scanning. We quantitatively assessed these artifacts embedded within a phantom according to standards set by the American Society for Testing and Materials (ASTM). MATERIALS AND METHODS...... according to the ASTM-F2119 standard and artifact volumes were assessed using OsiriX MD software Results: Tukey-Kramer post-hoc tests were used for statistical comparisons. For most materials, scanning sequences eliciting artifact volumes in the following (ascending) order FSE-T1/FSE-T2 ... plane (i.e. a circular pattern for axial plane and a "clover-like" pattern for sagittal plane). CONCLUSION: The availability of standardized information on artifact size and configuration during MR imaging will enhance diagnosis when faced with metallic compounds in the OMR....

  12. A Study for Shelf Life Evaluation of Rubber O-ring

    International Nuclear Information System (INIS)

    Non-metallic materials stored in warehouses in nuclear power plants have shelf life. The shelf life means the maximum storage time allowable such that the install life of the material is not affected. Materials whose shelf lives expire are generally discarded. unless the shelf lives of these materials can be extended by reducing the install life. Examples of this case are rubber materials. Rubber materials are widely used for sealing of various machines. There are various life evaluation methods for rubber material. For example, the compression set is generally used for evaluation the aging condition of rubber materials used for sealing. A compression set value can be calculated according to the ASTM D395. We have tried the compression set test by using specimens with 6.99mm diameter O-ring even when ASTM D 395 recommends the use of bar specimen. Test results and comparison between O-ring and reference data of EPRI NP-6608 are presented below

  13. A study on the influence of process parameters on the Mechanical Properties of 3D printed ABS composite

    Science.gov (United States)

    Jaya Christiyan, K. G.; Chandrasekhar, U.; Venkateswarlu, K.

    2016-02-01

    Additive Manufacturing (AM) technologies have been emerged as a fabrication method to obtain engineering components within a short span of time. Desktop 3D printing, also referred as additive layer manufacturing technology is one of the powerful method of rapid prototyping (RP) technique that fabricates three dimensional engineering components. In this method, 3D digital CAD data is converted directly to a product. In the present investigation, ABS + hydrous magnesium silicate composite was considered as the starting material. Mechanical properties of ABS + hydrous magnesium silicate composite material were evaluated. ASTM D638 and ASTM D760 standards were followed for carrying out tensile and flexural tests, respectively. Samples with different layer thickness and printing speed were prepared. Based on the experimental results, it is suggested that low printing speed, and low layer thickness has resulted maximum tensile and flexural strength, as compared to all the other process parameters samples.

  14. A study on the effect of corrosion resistance according to the composition variety of C, Cr, N in duplex stainless steel

    International Nuclear Information System (INIS)

    Recently the alloy development of duplex stainless steel has been done. On this study we studied the effect of the corrosion resistance according to the composition variety of C, Cr, N in the alloy elements of duplex stainless steel. Materials which have below 0.1 [mm/year] corrosion rate enable to use for corrosion-resisting materials, generally. On this experiment we inspected the effect of the composition variety of C, Cr, N in duplex stainless steel and the heat treatment, which the condition was the water quenching after the heat treatment for 1 hr. The experiment was done on the basis of the ASTM G48A test, Critical pitting temperature(CPT), and ASTM G-61(Electrochemical tests for cyclic polarization)

  15. Mechanical Properties of Post Irradiation Primary Cooling Piping of Bandung Research Reactor

    International Nuclear Information System (INIS)

    Testing on primary coolant piping of research reactor Bandung have been done. Primary coolant piping were made from Al 6061-T6. The goal of this activity is to investigate the mechanical properties changes caused by aging process after 33 years in irradiated. Type of testing i.e visual examination, thickness measurement, tensile and hardness test were done. The test data shown that there was a deposit at the inside surface of pipe, thickness decreased about 0.2 mm, tensile strength is 293 MPa, yield strength is 262 MPa, while the hardness is about 83 HRE (mean value). The test data than compared with ASTM standard. As the conclusion tensile and yield strength of pipe still fulfill the ASTM requirements, except the hardness is unsignificantly less/decreased. (author)

  16. Testing of abrasion materials

    International Nuclear Information System (INIS)

    A method of abrasion testing according to ASTM C 704-76 a is presented for steel fibre concrete mortar, fusion-cast basalt and a surface coating material and results of practical interest are mentioned. Due to the high technical demands on these materials and their specific fields of application, the very first test already supplied interesting findings. From the user's point of view, the method is an interesting alternative to the common test methods, e.g. according to DIN 52 108 (wheel test according to Boehme). In English-speaking countries, testing according to ASTM is often mandatory in the refractory industry in order to assure constant quality of refractory materials after setting. The method is characterized by good comparability and high accuracy of measurement. Only the test piece is exchanged while the test conditions remain constant, so that accurate information on the material studied is obtained. (orig.)

  17. Oxidation behaviour of Zr-1 Nb clad material

    International Nuclear Information System (INIS)

    The oxidation behaviour of zirconium-1Nb, zirconium-2.5Nb and zircaloy-2 has been studied in 400deg C steam for 72 hours at 20 MPa with proper control of oxygen as per the procedure described in G 2M of ASTM. The oxide coatings were observed to be uniform and lustrous black. In a separate test, the Zr - 1 Nb samples were exposed in an autoclave in the same conditions without the control of oxygen and the oxygen content was high in this test. These tests showed about 5 fold increase in oxidation rate. In separate standard tests as per ASTM G 2M, it was shown that pressure (up to 20 MPa) does not play any significant role while etching (pickling) does affect the oxidation rates of Zr-1Nb material. (author)

  18. Mode I Fracture Toughness Testing of Composite Pipes

    Science.gov (United States)

    Perillo, G.; Echtermeyer, A. T.

    2013-12-01

    A common industrial production process for axially symmetric composites is filament winding. For this type of material, interlayer properties cannot be evaluated using the available ISO and ASTM standards because the curved surfaces and partially interwoven fibers of cylindrical parts can affect the results. This paper presents a special test geometry for measuring the critical energy release rate GIc directly from actual filament wound products. Different specimen geometries were investigated numerically with respect to their stress state at the crack tip and tested experimentally. The results were compared against those of flat specimens tested according to ISO/ASTM standards and made from the same constituent materials as the original test pipe. Testing specimens taken from an actual filament wound pipe yields more realistic results of GIc = 1,220 J/m2 than testing flat specimens (GIc = 330 J/m2), especially made for fulfilling the test standard's requirements.

  19. Comparison of different test methods in fracture mechanics for the assessment of critical parameters describing the fracture behavior

    International Nuclear Information System (INIS)

    The values for the fracture toughness determined with the aid of the elastic-plastic methods all fit well into the band of scattering of the fracture toughness-temperature diagram put up according to ASTM E 399. This proves the applicability of these methods and the possibility of determining a critical fracture toughness with sufficient accuracy by means of the applied methods of measurement. For the assessment of the critical stress of the specimen the potential method is a proper method. No influence of the sample site on the elastic-plastic characteristics could be found, a sample geometry factor of β = sup(>) 0.35 instead of β = 2.5 required by ASTM E 399 thus being sufficient for the materials used for the construction of turbine generators. (orig.)

  20. Technology of Processing of Fluorol with Metallic Oxides and It's Resistance toward Active Fluid

    International Nuclear Information System (INIS)

    Fluorocarbon polymers are the best elastomers for a variety of applications. In this work we investigate the characteristics of fluorocarbon rubber for use in different applications, via preparation different formulations. We investigate the effect of added metallic oxides ( CaO, MgO, ZnO and PbO ) on the chemical and physical properties of prepared formulations. Chemical resistance tests were made for conc. H2SO4, conc. HCl, conc. HNO3, ASTM Oil No.2, ASTM Ref. Fuel C and conc. NaOH solution. Results showed that the prepared fluorocarbon rubber have high chemical resistance to various acids, alkalis, oils and fuels, also chemical resistance towards conc. HNO3 is enhanced in the presence of lead oxide

  1. Ferroalloys and other additives to liquid iron and steel

    Energy Technology Data Exchange (ETDEWEB)

    Lampman, J.R.; Peters, A.T. (eds.)

    1982-01-01

    This conference proceedings contains 17 papers. The first half, on ferroalloys, covers ASTM and ISO standards; the National Defense Stockpile; the U.S. ferroalloy industry; ocean mining for ferroalloy components; and purchasing and quality control practices of steel mill ferroalloy users. The second half of the proceedings deals with additives which are property modifiers. These papers cover usage and trends of rare earths and their role in modifying graphite cast iron; titanium additions to iron and steel; aluminum as a deoxidant for HSLA Steels; aluminum recovery in steelmaking; ferroaluminum as an alternative to metallic aluminum; production of fine grained steel using vanadium or niobium as substitutes for aluminum in continuous casting; and additives used to produce free machining steels. Two appendices give ASTM standards, densities and thermal effects of these materials. One paper is abstracted separately.

  2. Kekuatan Tekan dan Flexural Material Komposit Serat Bambu Epoksi

    Directory of Open Access Journals (Sweden)

    Agustinus Purna Irawan

    2013-01-01

    Full Text Available Natural fiber composite to be one good choice to substitute synthetic fiber composite. One of the abundance of natural fiber is bamboo fiber. This study aims to develop and obtain the mechanical characteristics of bamboo fiber composite with epoxy matrix that will be implemented on the socket prosthesis product. Testing was conducted involve the compressive strength according ASTM D 695, flexural strength according ASTM D 730-03, and compressive failure test of socket prototype product according ISO 10328. Based on the results testing, obtained compressive strength of 41.44 MPa, flexural strength of 98.32 MPa, and compressive failure maximum of socket prosthesis prototype made ​​from bamboo fiber epoxy composites 87.1 ± 4.3 kN. The result show that strength of bamboo fiber epoxy composite has potential to be developed further as socket prosthesis and other engineering materials.

  3. 织物透湿测试方法比较%Introduction and comparison of standard methods for measuring water vapor transmission of fabrics

    Institute of Scientific and Technical Information of China (English)

    邓燕

    2004-01-01

    介绍国际上常用的五种织物透湿测试方法ASTM E 96水正杯法与倒杯法、日本JIS L1099干燥剂倒杯法、ASTM F2298动态透湿测试法及ISO 11092出汗热盘法,并对其测试条件、测试结果及其相关性进行了对比.其中正杯法与DMPC动态法有非常好的相关性,倒杯干燥剂法与出汗热盘法有较好的负相关性.应根据产品实际用途选择测试方法,以使测试数据具有实用意义.

  4. Estimation Uncertainty in the Determinatin of the Master Curve Reference Temperature

    Energy Technology Data Exchange (ETDEWEB)

    TL Sham; DR Eno

    2006-11-15

    The Master Curve Reference Temperature, T{sub 0}, characterizes the fracture performance of structural steels in the ductile-to-brittle transition region. For a given material, this reference temperature is estimated via fracture toughness testing. A methodology is presented to compute the standard error of an estimated T{sub 0} value from a finite sample of toughness data, in a unified manner for both constant temperature and multiple temperature test methods. Using the asymptotic properties of maximum likelihood estimators, closed-form expressions for the standard error of the estimate of T{sub 0} are presented for both test methods. This methodology includes statistically rigorous treatment of censored data, which represents an advance over the current ASTM E1921 methodology. Through Monte Carlo simulations of realistic constant temperature and multiple temperature test plans, the recommended likelihood-based procedure is shown to provide better statistical performance than the methods in the ASTM E1920 standards.

  5. The identification of Isopar H in vinyl flooring.

    Science.gov (United States)

    Wells, Sharee Booke

    2005-07-01

    Vinyl flooring manufacturers use plasticizers to decrease the viscosity and increase the pliability of vinyl. Several ignitable liquid plasticizers used in the manufacture of vinyl flooring were identified and investigated in this study. Twenty-nine collections from five major vinyl manufacturers, a total of 72 samples, were analyzed using passive headspace concentration in accordance with the American Society for Testing and Materials (ASTM E 1412-00) and gas chromatographic-mass spectrometric (GC-MS) analysis as described in ASTM E 1618-01 (1,2). Norpar products and TXIB (2,2,4-trimethyl-1,3-pentanediol diisobutyrate) are ignitable liquids common to the manufacture of vinyl flooring and were identified in all recently obtained samples. Isopar H is an ignitable liquid found in various products such as charcoal starters, copier toners, and some solvents (2). Of the 29 collections analyzed, Isopar H was only identified in Armstrong's Interflex-Traditions pattern. PMID:16078489

  6. Oxygen measurements in thin ribbon silicon

    Science.gov (United States)

    Hyland, S. L.; Ast, D. G.; Baghdadi, A.

    1987-03-01

    The oxygen content of thin silicon ribbons grown by the dendritic web technique was measured using a modification of the ASTM method based on Fourier transform infrared spectroscopy. Web silicon was found to have a high oxygen content, ranging from 13 to 19 ppma, calculated from the absorption peak associated with interstitial oxygen and using the new ASTM conversion coefficient. The oxygen concentration changed by about 10 percent along the growth direction of the ribbon. In some samples, a shoulder was detected on the absorption peak. A similar shoulder in Czochralski grown material has been variously interpreted in the literature as due to a complex of silicon, oxygen, and vacancies, or to a phase of SiO2 developed along dislocations in the material. In the case of web silicon, it is not clear which is the correct interpretation.

  7. Oxygen measurements in thin ribbon silicon. [edge-defined film-fed grown

    Science.gov (United States)

    Hyland, S. L.; Ast, D. G.; Baghdadi, A.

    1987-01-01

    The oxygen content of thin silicon ribbons grown by the dendritic web technique was measured using a modification of the ASTM method based on Fourier transform infrared spectroscopy. Web silicon was found to have a high oxygen content, ranging from 13 to 19 ppma, calculated from the absorption peak associated with interstitial oxygen and using the new ASTM conversion coefficient. The oxygen concentration changed by about 10 percent along the growth direction of the ribbon. In some samples, a shoulder was detected on the absorption peak. A similar shoulder in Czochralski grown material has been variously interpreted in the literature as due to a complex of silicon, oxygen, and vacancies, or to a phase of SiO2 developed along dislocations in the material. In the case of web silicon, it is not clear which is the correct interpretation.

  8. Sensitivities of a Standard Test Method for the Determination of the pHe of Bioethanol and Suggestions for Improvement

    Directory of Open Access Journals (Sweden)

    Paul J. Brewer

    2010-11-01

    Full Text Available An assessment of the sensitivities of the critical parameters in the ASTM D6423 documentary standard method for the measurement of pHe in (bioethanol has been undertaken. Repeatability of measurements made using the same glass electrode and reproducibility between different glass electrodes have been identified as the main contributors to the uncertainty of the values produced. Strategies to reduce the uncertainty of the measurement have been identified and tested. Both increasing the time after which the pHe measurement is made following immersion in the sample, and rinsing the glass electrode with ethanol prior to immersion in the sample, have been shown to be effective in reducing the uncertainty of the numerical value produced. However, it is acknowledged that the values produced using these modified approaches may not be directly compared with those obtained using the documentary ASTM method since pHe is defined operationally by the process used to measure it.

  9. Corrosion Resistance and Mechanical Properties of TIG and A-TIG Welded Joints of Lean Duplex Stainless Steel S82441 / 1.4662

    Directory of Open Access Journals (Sweden)

    Brytan Z.

    2016-06-01

    Full Text Available This paper presents results of pitting corrosion resistance of TIG (autogenous and with filler metal and A-TIG welded lean duplex stainless steel S82441/1.4662 evaluated according to ASTM G48 method, where autogenous TIG welding process was applied using different amounts of heat input and shielding gases like pure Ar and Ar+N2 and Ar+He mixtures. The results of pitting corrosion resistance of the welded joints of lean duplex stainless steel S82441 were studied in as weld conditions and after different mechanical surface finish treatments. The results of the critical pitting temperature (CPT determined according to ASTM G48 at temperatures of 15, 25 and 35°C were presented. Three different surface treatment after welding were applied: etching, milling, brushing + etching. The influence of post weld surface treatment was studied in respect to the pitting corrosion resistance, basing on CPT temperature.

  10. Metrology Needs for Metal Additive Manufacturing Powders

    Science.gov (United States)

    Slotwinski, John A.; Garboczi, Edward J.

    2015-03-01

    Additive manufacturing (AM) processes can produce highly complex and customized parts without the need for dedicated tooling and can produce parts directly from the part design information. These types of processes are poised to revolutionize the manufacturing industry, yet several challenges are currently preventing more widespread adoption of AM technologies. Among these challenges are metrology issues associated with the measurement and characterization of the metal powders used for AM systems. This article will describe the technical challenges and needs for characterizing metal AM powders, recent research efforts to address those needs, and current work to standardize characterization methods in ASTM and ISO, such as the recently released ASTM F3049, Standard Guide for Characterizing Properties of Metal Powders Used for Additive Manufacturing Processes.

  11. Carbon steel protection in G.S. (Girlder sulfide) plants. Influence of the material surface state. Pt. 2

    International Nuclear Information System (INIS)

    The passivation on carbon steels, in particular ASTM A 516 Degree 60 and ASTM A 333 steels is made, submitting it to the action of H2S/H2O1,2 corrosive medium. The steel is rapidly corroded by H2S in aqueous solution, forming iron sulfides on the metallic surface in a crystalline layer of various μm of thickness. During this process, various types of iron sulfides at different phases, with different sulfur and iron contents are formed. The influence of temperature, the pH, the exposure time and the corrosive medium composition on formation and quality of the iron sulfides protective layer was also studied. (Author)

  12. Hydrogen Embrittlement of Hydro-Cracker Pipe

    International Nuclear Information System (INIS)

    Low carbon steel elbows of the hydro-cracker pipe in an oil refinery plant were failed after six months operation. The elbows were manufactured according to ASTM A234 WPB, which specifies the processing requirements for the parts used in sour gas environment. The chemical compositions, mechanical properties, microstructures and crack morphologies were evaluated and compared to ASTM specification. It was found that ingress of hydrogen with the aid of hydrogen sulfide to the deformed area drove the parts to the failure. The deformed structures in failed elbows, which resulted in high hardness and low ductility, enhanced sulfide stress cracking(SSC) in sour gas service. The effects of normalizing and cold working on the sulfide stress cracking were simulated by electrolytic hydrogen charging. It was found that normalized steel was not susceptible to SSC after the hydrogen charging. The preventive measures against SSC were discussed

  13. Fatigue Crack Closure Analysis Using Digital Image Correlation

    Science.gov (United States)

    Leser, William P.; Newman, John A.; Johnston, William M.

    2010-01-01

    Fatigue crack closure during crack growth testing is analyzed in order to evaluate the critieria of ASTM Standard E647 for measurement of fatigue crack growth rates. Of specific concern is remote closure, which occurs away from the crack tip and is a product of the load history during crack-driving-force-reduction fatigue crack growth testing. Crack closure behavior is characterized using relative displacements determined from a series of high-magnification digital images acquired as the crack is loaded. Changes in the relative displacements of features on opposite sides of the crack are used to generate crack closure data as a function of crack wake position. For the results presented in this paper, remote closure did not affect fatigue crack growth rate measurements when ASTM Standard E647 was strictly followed and only became a problem when testing parameters (e.g., load shed rate, initial crack driving force, etc.) greatly exceeded the guidelines of the accepted standard.

  14. Design of a Remote Monitoring System for Evaluation of Corrosión in Reinforced Concrete Structures under Chloride Ion Attack

    OpenAIRE

    Roa-Rodríguez Guillermo; Aperador-Chaparro William; Delgado-Tobón Emilio

    2015-01-01

    In this paper it was designed and built a remote monitoring equipment that allows to obtain the corrosion potential in reinforcing steels embedded in reinforced concrete, which were previously subjected to chloride attack in a hostile environment. The monitoring system, based on ASTM standard C876-91, determines from 0% to 100% the probability of corrosion on the samples tested. The system provides ease of perform field installation, if there is cellular network coverage, and m...

  15. Fracture toughness correlation with microstructure and other mechanical properties in near-eutectoid steel

    OpenAIRE

    Sudhakar, KV; Murty, GS

    1998-01-01

    The variation of yield strength and fracture toughness was investigated for four different heat treatments attempted on specimens of a near-eutectoid steel. The aim of this study was to optimize the microstructure for simultaneous improvements in strength and toughness. Further, the fracture toughness deduced through empirical relations from tensile and charpy impact tests was compared with those measured directly according to ASTM Designation: E 399. Among the four different heat treatments ...

  16. A study on fatigue crack growth in dual phase martensitic steel in air environment

    OpenAIRE

    Sudhakar, KV; Dwarakadasa, ES

    2000-01-01

    Dual phase (DP) steel was intercritically annealed at different temperatures from fully martensitic state to achieve martensite plus ferrite, microstructures with martensite contents in the range of 32 to 76%.Fatigue crack growth (FCG) and fracture toughness tests were carried out as per ASTM standards E 647 and E 399, respectively to evaluate the potential of DP steels. The crack growth rates (da/dN) at different stress intensity ranges (DK) were determined to obtain the threshold value of s...

  17. Evaluation of impact and fatigue properties on austempered ductile iron

    OpenAIRE

    Arias Fernández, Sergio

    2009-01-01

    Austempered Ductile Iron (ADI) proved to be an excellent material as it possesses attractive properties: high strength, ductility and toughness are combined with good wear resistance and machinability. In this work impact and the fatigue properties have been evaluated for low alloyed Austempered Ductile Iron. To do this, Charpy-type impact test for austempered ductile iron was performed by the standard ASTM A 327M and Fatigue Crack Growth Rates (FCGR) were measured by the stand...

  18. Extended fatigue life of a catalyst-free self-healing acrylic bone cement using microencapsulated 2-octyl cyanoacrylate

    OpenAIRE

    Brochu, Alice B. W.; Matthys, Oriane B.; Craig, Stephen L.; Reichert, William M.

    2014-01-01

    The tissue adhesive 2-octyl cyanoacrylate (OCA) was encapsulated in polyurethane microshells and incorporated into bone cement to form a catalyst free, self-healing bone cement comprised of all clinically approved components. The bending strength, modulus, and fatigue lifetime were investigated in accordance with ASTM and ISO standards for the testing of PMMA bone cement. The bending strength of bone cement specimens decreased with increasing wt% capsules content for capsules without or with ...

  19. C-shaped specimen plane strain fracture toughness tests. [metallic materials

    Science.gov (United States)

    Buzzard, R. T.; Fisher, D. M.

    1977-01-01

    Test equipment, procedures, and data obtained in the evaluation of C-shaped specimens are presented. Observations reported on include: specimen preparation and dimensional measurement; modifications to the standard ASTM E 399 displacement gage, which permit punch mark gage point engagement; and a measurement device for determining the interior and exterior radii of ring segments. Load displacement ratios were determined experimentally which agreed with analytically determined coefficients for three different gage lengths on the inner surfaces of radially-cracked ring segments.

  20. Effect of neutron irradiation on the impact properties of A533B steel

    International Nuclear Information System (INIS)

    A new methodology is proposed to correlate the upper shelf energy (USE) of full size and subsize Charpy specimens of a nuclear reactor pressure vessel plate material, ASTM type A 533 Grade B (A533B) having a low USE (USE 19 n/cm2 (E > 1 MeV) by 78 degree, 83 degree, and 70 degree C for full, half, and third size specimens, respectively. These shifts in DBTT appeared to be independent of specimen size and notch geometry

  1. Use of fluidic oscillator to measure fuel-air ratios of combustion gases

    Science.gov (United States)

    Riddlebaugh, S. M.

    1974-01-01

    A fluidic oscillator was investigated for use in measuring fuel-air ratios in hydrocarbon combustion processes. The oscillator was operated with dry exhaust gas from an experimental combustor burning ASTM A-1 fuel. Tests were conducted with fuel-air ratios between 0.015 and 0.031. Fuel-air ratios determined by oscillator frequency were within 0.001 of the values computed from separate flow measurements of the air and fuel.

  2. 46 CFR 56.01-2 - Incorporation by reference.

    Science.gov (United States)

    2010-10-01

    ... CFR part 51. To enforce any edition other than that specified in this section, the Coast Guard must...-2004 Welded and Seamless Wrought Steel Pipe (2004) (“ASME B36.10M”), 56.07-5; 56.30-20; 56.60-1; and... Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless (“ASTM Specification A...

  3. Preparation and performance of Ecobras/bentonite biodegrading films

    International Nuclear Information System (INIS)

    Compounds based on the biodegradable polymer Ecobras and bentonite clay in its pristine, sonicated, and organically modified with a quaternary ammonium salt forms were prepared as flat films. Clays and compounds were characterized by x-ray diffraction and scanning electron microscopy. Mechanical properties of the films were determined according to pertinent ASTM standards. Reasonable properties, higher than those of the matrix, were obtained with compounds prepared with purified clays and organoclays, particularly for low clay loading. (author)

  4. Analytical studies on the quality and environmental impact of commercial motor gasoline available in multan region of pakistan

    International Nuclear Information System (INIS)

    Physico-chemical characteristics such as specific gravity, reid vapour pressure, copper corrosion, distillation (I.B.P., F.B.P., Total recovery and residue) and hydrocarbon contents (saturates, aromatics and polars) of gasoline of different oil marketing companies collected from retail outlets in district Multan have been analysed using standard ASTM procedures. Results have been compared with the Pakistani, Indian and European specifications to assess the quality of Pakistani gasoline (petrol). The environmental impact of gasoline has also been assessed. (author)

  5. 〈レビュー〉金属3Dプリンタの開発動向と今後の展開

    OpenAIRE

    京極, 秀樹

    2014-01-01

    In this paper, recent trend and applications on additive manufacturing with metal are reviewed. Recently, additive manufacturing technologies are paid great attention especially in the aerospace, automotive, and medical industries because of the possibility to manufacture lighter structures to reduce weight, complex high-performance parts, and so on. The classification of additive manufacturing technologies by the ASTM F42 committee is introduced, especially the powder bed fusion and direct e...

  6. Final report for Allied-Signal Aerospace Company, Kansas City Division on protective glove permeation analysis

    Energy Technology Data Exchange (ETDEWEB)

    Swearengen, P.M.; Johnson, J.S.; Priante, S.J. [Lawrence Livermore National Lab., CA (United States)

    1990-06-22

    We conducted 25 separate glove fabric permeation studies during this project. The permeations were carried out in the small (1 inch) glass ASTM cell. One other permeation study was carded out with a large (two inch) modified ASTM cell for comparison with the small cell results. We also compared the LLNL procedure from both large and small cells with the standard ASTM test procedure which uses a liquid solution on the breakthrough side of the fabric (the liquid is then sampled on a periodic basis). In all comparisons we observed a close-correlation in breakthrough times between the two procedures and the two cell sizes. In the course of this study, we tested ten different glove materials. These included neoprene (original ASTM round-robin sheet stock, 16 mil thickness), Edmont Sol-Vex (nitrile), Pioneer nitrile, Pioneer Pylox (polyvinyl chloride), North Viton (trademark for fluoroelastomers), North SilverShield (Norfoil, trademark for a flexible metallized laminate), Safety 4 4H (patented plastic laminate), and QRP PolyTuff (polyurethane) 20G-2000 (5 mil), 23G-2300 (1.5 mil), and 25G-2500 (1.5 mil). Three of the glove materials, Viton and Silver Shield (North), and 4H (Safety 4), did not allow any permeation measurable by our system to either 1,2-dichloroethane or 3% diphenylmercury (in 1,2-dichloroethane) for a period greater than six hours. A fourth material, QRP Poly Tuff 2OG-2000, did not allow any measurable penetration of Asilamine (an aromatic diamine) for a time pedod of greater than 4 hours. Breakthrough times and curves were obtained for all other tested materials. Eleven different chemicals were used to challenge the glove materials. These included acetone, Asilamine, 1,2-dichloroethane, dichloromethane, isopropyl alcohol, a mixture of 3% diphenylmercury in 1,2-dichloroethane (w/w), phenol, and lso Verre Stripper, 4,4`-methylenedianil (MDA), 1,3-phenylenediamine (MPDA), and Shell Epon (R) curing agent Z.

  7. Final report for Allied-Signal Aerospace Company, Kansas City Division on protective glove permeation analysis

    International Nuclear Information System (INIS)

    We conducted 25 separate glove fabric permeation studies during this project. The permeations were carried out in the small (1 inch) glass ASTM cell. One other permeation study was carded out with a large (two inch) modified ASTM cell for comparison with the small cell results. We also compared the LLNL procedure from both large and small cells with the standard ASTM test procedure which uses a liquid solution on the breakthrough side of the fabric (the liquid is then sampled on a periodic basis). In all comparisons we observed a close-correlation in breakthrough times between the two procedures and the two cell sizes. In the course of this study, we tested ten different glove materials. These included neoprene (original ASTM round-robin sheet stock, 16 mil thickness), Edmont Sol-Vex (nitrile), Pioneer nitrile, Pioneer Pylox (polyvinyl chloride), North Viton (trademark for fluoroelastomers), North SilverShield (Norfoil, trademark for a flexible metallized laminate), Safety 4 4H (patented plastic laminate), and QRP PolyTuff (polyurethane) 20G-2000 (5 mil), 23G-2300 (1.5 mil), and 25G-2500 (1.5 mil). Three of the glove materials, Viton and Silver Shield (North), and 4H (Safety 4), did not allow any permeation measurable by our system to either 1,2-dichloroethane or 3% diphenylmercury (in 1,2-dichloroethane) for a period greater than six hours. A fourth material, QRP Poly Tuff 2OG-2000, did not allow any measurable penetration of Asilamine (an aromatic diamine) for a time pedod of greater than 4 hours. Breakthrough times and curves were obtained for all other tested materials. Eleven different chemicals were used to challenge the glove materials. These included acetone, Asilamine, 1,2-dichloroethane, dichloromethane, isopropyl alcohol, a mixture of 3% diphenylmercury in 1,2-dichloroethane (w/w), phenol, and lso Verre Stripper, 4,4'-methylenedianil (MDA), 1,3-phenylenediamine (MPDA), and Shell Epon (R) curing agent Z

  8. Sustainable production of blended cement in Pakistan through addition of natural pozzolana

    OpenAIRE

    Ahmad Muhammad Imran; Sajjad Muhammad; Khan Irfan Ahmed; Durrani Amina; Durrani Ali Ahmed; Gul Saeed; Ullah Asmat

    2016-01-01

    In this work pozzolana deposits of district Swabi, Pakistan were investigated for partial substitution of Portland cement along with limestone filler. The cement samples were mixed in different proportions and tested for compressive strength at 7 and 28 days. The strength activity index (SAI) for 10 % pozzolana, and 5% limestone blend at 7 and 28 days was 75.5% and 85.0% satisfying the minimum SAI limit of ASTM C618. Twenty two percents natural pozzolana an...

  9. Carbon steel protection in G.S. (Girlder sulfide) plants. Iron sulfide scales formation conditions. Pt. 1

    International Nuclear Information System (INIS)

    An ASTM A 516 degree 60 carbon steel superficial protection technique submitted to a hydrogen-water sulfide corrosive medium at 2 MPa of pressure and 40-125 deg C forming on itself an iron sulfide layer was tested. Studies on pH influence, temperature, passivating mean characteristics and exposure time as well as the mechanical resistance of sulfide layers to erosion are included. (Author)

  10. Ultrasonic Monitoring of Setting and Strength Development of Ultra-High-Performance Concrete

    OpenAIRE

    Doo-Yeol Yoo; Hyun-Oh Shin; Young-Soo Yoon

    2016-01-01

    In this study, the setting and tensile strength development of ultra-high-performance concrete (UHPC) at a very early age was investigated by performing the penetration resistance test (ASTM C403), as well as the direct tensile test using the newly developed test apparatus, and taking ultrasonic pulse velocity (UPV) measurements. In order to determine the optimum surface treatment method for preventing rapid surface drying of UHPC, four different methods were examined: plastic sheet, curing c...

  11. An evaluation of corrosion characteristics of materials for cladding (Zr) and heat-exchanger tubes (Ti) of SMART in static autoclaves

    International Nuclear Information System (INIS)

    The corrosion characteristics of materials (Low-Sn Zircaloy-4, Zr-1.0Nb, PT-7M, ASTM Gr. 2 Ti, Inconel-600 alloys) for cladding and heat-exchanger tubes of SMART in pure water, ammonia aqueous solutions of pH 9.98 and pH 11.13 at 360 .deg. and in steam at 400 .deg. were evaluated by using static autoclaves

  12. 40 CFR 86.1313-98 - Fuel specifications.

    Science.gov (United States)

    2010-07-01

    ... Regulations for New Otto-Cycle and Diesel Heavy-Duty Engines; Gaseous and Particulate Exhaust Test Procedures... engines or other evidence acceptable to the Administrator. Table N98-2 Item ASTM test method No. Type 1-D...-293.3) (321.1-365.6) Gravity °API D 287 40-44 32-37 Total sulfur pct. D 2622 0.03-0.05...

  13. 40 CFR 86.113-07 - Fuel specifications.

    Science.gov (United States)

    2010-07-01

    ... Heavy-Duty Vehicles; Test Procedures § 86.113-07 Fuel specifications. Section 86.113-07 includes text... ASTM test method No. Type 2-D (i) Cetane Number D613 40-50 (ii) Cetane Index D976 40-50 (iii...) (293.3-332.2) (E) EP °F D86 610-690 ( °C) (321.1-365.6) (iv) Gravity °API D287 32-37 (v) Total...

  14. The Synergy of the Surface Layer after Carburizing of Tool Steel as a Measure of Operational Quality

    Directory of Open Access Journals (Sweden)

    Wencel, Z.

    2007-01-01

    Full Text Available In the paper the results of the investigation on surface layer of carburized X150CrMoV12-1 tool steel are presented. Abrasive wearing of the surface was determined according the ASTM G77-98 method. The microstructure of the matrix and distribution of carbides were observed in a Scanning Electron Microscope (SEM. A correlation between the investigated parameters (microstructure/carbides distribution was found.

  15. Investigation of Wear Coefficient of Manganese Phosphate Coated Tool Steel

    OpenAIRE

    S. Ilaiyavel; Venkatesan, A.

    2013-01-01

    In recent years the properties of the coating in terms of wear resistance is of paramount importance in order to prevent the formation of severe damages. In this study, Wear coefficient of uncoated, Manganese Phosphate coated, Manganese Phosphate coated with oil lubricant, Heat treated Manganese Phosphate coated with oil lubricant on AISI D2 steels was investigated using Archard’s equation. The wear tests were performed in a pin on disk apparatus as per ASTM G-99 Standard. The volumetric wear...

  16. Flexural Toughness of Steel Fiber Reinforced High Performance Concrete Containing Nano-SiO 2 and Fly Ash

    OpenAIRE

    Peng Zhang; Ya-Nan Zhao; Qing-Fu Li; Peng Wang; Tian-Hang Zhang

    2014-01-01

    This paper aims to clarify the effect of steel fiber on the flexural toughness of the high performance concrete containing fly ash and nano-SiO2. The flexural toughness was evaluated by two methods, which are based on ASTM C1018 and DBV-1998, respectively. By means of three-point bending method, the flexural toughness indices, variation coefficients of bearing capacity, deformation energy, and equivalent flexural strength of the specimen were measured, respectively, and the relational curves ...

  17. Water pollution in Rawal lake Islamabad (part-1)

    International Nuclear Information System (INIS)

    Water pollution of Rawal Lake, one of the three major drinking water sources (21 MG) to Rawalpindi and Islamabad, by anionic pollutants is reported. Physicochemical analysis of water samples collected during September 1996 - January 1997, was carried out using ASTM and AOAC methods. Water samples from Rawal Lake and its tributaries were collected periodically and analyzed for pH, conductivity, turbidity, alkalinity, TDS, TSS, anions (chlorides, phosphates, nitrates, sulfates) and trace metals. (author)

  18. Elastic-plastic analysis of the SS-3 tensile specimen

    Energy Technology Data Exchange (ETDEWEB)

    Majumdar, S. [Argonne National Lab., IL (United States)

    1998-09-01

    Tensile tests of most irradiated specimens of vanadium alloys are conducted using the miniature SS-3 specimen which is not ASTM approved. Detailed elastic-plastic finite element analysis of the specimen was conducted to show that, as long as the ultimate to yield strength ratio is less than or equal to 1.25 (which is satisfied by many irradiated materials), the stress-plastic strain curve obtained by using such a specimen is representative of the true material behavior.

  19. Influence of Fibre Architecture on Mechanical Properties of Jute Fibre Reinforced Composites

    OpenAIRE

    Hasan, Md Rejaul

    2013-01-01

    Jute fibre reinforced epoxy based composites were manufactured by vacuum bagging method using three different jute fibre structures; woven fabric, non-woven mat and carded sliver. The composites were made using different number of layers of reinforcing materials. Then the tensile test on composite laminates was conducted in different directions of composites according to ASTM D 3039 standards. The tensile properties were evaluated as a function of fibre architecture (woven, non-woven and sliv...

  20. Poliuretana derivada de óleos vegetais exposta ao intemperismo artificial Polyurethane derived from vegetal oil exposed to artificial weathering

    Directory of Open Access Journals (Sweden)

    Alessandra E. F. S. Almeida

    2006-01-01

    Full Text Available Foram obtidas as propriedades mecânicas e viscoelásticas da poliuretana derivada do óleo de mamona após sua exposição ao intemperismo artificial, a fim de avaliar a aplicabilidade deste material como revestimento polimérico para substratos de concreto na Construção Civil. Os procedimentos experimentais foram realizados em conformidade com a ASTM G 53 for "Operating Light and Water Exposure Apparatus (Fluorescent UV - Condensation Type for Exposure of Nonmetallic Materials"[1]. O ensaio para a caracterização mecânica dos corpos-de-prova após exposição ao intemperismo artificial foi realizado conforme a norma ASTM D 638M-96 "Standard Test Method for Tensile Properties of Plastics (Metric"[2]. Foi empregado o método de análise dinâmico-mecânica para a obtenção das propriedades viscoelásticas da poliuretana vegetal. Os resultados mostraram que a exposição ao intemperismo artificial não ocasionou mudanças significativas nas propriedades do revestimento polimérico para o tempo de exposição estudado.The mechanical and viscoelastic properties of polyurethane derived from castor oil were obtained after being exposed to artificial weathering with the purpose of evaluating their applicability as polymeric coatings on concrete substrate for Civil Construction. The procedures followed the ASTM G53 for "Operating Light and Water Exposure Apparatus (Fluorescent UV - Condensation Type for Exposure of Nonmetallic Materials"[1]. Mechanical properties were obtained by means of the ASTM D 638M-96 "Standard Test Method for Tensile Properties of Plastics (Metric"[2]. Furthermore, a Dynamic Mechanical Analysis (DMA was carried out in order to study the viscoelastic properties of polyurethane. The results showed that the properties were altered slightly considering the time studied.

  1. Analysis of Twenty-Two Performance Properties of Diesel, Gasoline, and Jet Fuels Using a Field-Portable Near-Infrared (NIR) Analyzer.

    Science.gov (United States)

    Brouillette, Carl; Smith, Wayne; Shende, Chetan; Gladding, Zack; Farquharson, Stuart; Morris, Robert E; Cramer, Jeffrey A; Schmitigal, Joel

    2016-05-01

    The change in custody of fuel shipments at depots, pipelines, and ports could benefit from an analyzer that could rapidly verify that properties are within specifications. To meet this need, the design requirements for a fuel analyzer based on near-infrared (NIR) spectroscopy, such as spectral region and resolution, were examined. It was found that the 1000 to 1600 nm region, containing the second CH overtone and combination vibrational modes of hydrocarbons, provided the best near-infrared to fuel property correlations when path length was taken into account, whereas 4 cm(-1) resolution provided only a modest improvement compared to 16 cm(-1) resolution when four or more latent variables were used. Based on these results, a field-portable near-infrared fuel analyzer was built that employed an incandescent light source, sample compartment optics to hold 2 mL glass sample vials with ∼1 cm path length, a transmission grating, and a 256 channel InGaAs detector that measured the above stated wavelength range with 5-6 nm (∼32 cm(-1)) resolution. The analyzer produced high signal-to-noise ratio (SNR) spectra of samples in 5 s. Twenty-two property correlation models were developed for diesel, gasoline, and jet fuels with root mean squared error of correlation - cross-validated values that compared favorably to corresponding ASTM reproducibility values. The standard deviations of predicted properties for repeat measurements at 4, 24, and 38℃ were often better than ASTM documented repeatability values. The analyzer and diesel property models were tested by measuring seven diesel samples at a local ASTM certification laboratory. The standard deviations between the analyzer determined values and the ASTM measured values for these samples were generally better than the model root mean squared error of correlation-cross-validated values for each property. PMID:27006025

  2. 46 CFR 128.310 - Fuel.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Fuel. 128.310 Section 128.310 Shipping COAST GUARD... Main and Auxiliary Machinery § 128.310 Fuel. (a) Except as provided by paragraph (b) of this section..., must be driven by a fuel having a flashpoint of not lower than 43 °C (110 °F) as determined by ASTM...

  3. Impact of the ENDF/B-VI Cross Section on the RPV Fluence Determination

    International Nuclear Information System (INIS)

    The calculations with the broad-group cross-section library Bugle-96, and atom displacement (dpa) cross sections for iron, both derived from ENDF/B-VI data, result in higher calculated fast neutron fluxes, better agreement of calculations with radiometric dosimeter measurements, and significantly slower dpa rate attenuation through pressure vessel walls relative to the results with their predecessors: the Sailor library and ASTM iron dpa cross sections

  4. Nano-modified adhesive by graphene: the single lap-loint case

    OpenAIRE

    Almir Silva Neto; Diego Thadeu Lopes da Cruz; Antonio Ferreira Ávila

    2013-01-01

    This paper addresses the performance study on, low viscosity, nano-modified adhesives by graphene. For achieving this goal, single-lap joints following ASTM D 5868-01 were manufactured and tested. X-ray diffraction, scanning electron microscopy and nanoindentation were employed for graphene based nanostructures characterization. The increase on joint strength was around 57% when compared against the control group. Furthermore, all failures for the nano-modified adhesive were cohesive failure ...

  5. Arsenic Transformation Predisposes Human Skin Keratinocytes To UV-induced DNA Damage Yet Enhances Their Survival Apparently by Diminishing Oxidant Response

    OpenAIRE

    Sun, Yang(Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China); Kojima, Chikara; Chignell, Colin; Mason, Ronald; Waalkes, Michael P.

    2011-01-01

    Inorganic arsenic and UV, both human skin carcinogens, may act together as skin co-carcinogens. We find human skin keratinocytes (HaCaT cells) are malignantly transformed by low-level arsenite (100 nM, 30 weeks; termed As-TM cells) and with transformation concurrently undergo full adaptation to arsenic toxicity involving reduced apoptosis and oxidative stress response to high arsenite concentrations. Oxidative DNA damage (ODD) is a possible mechanism in arsenic carcinogenesis and a hallmark o...

  6. Static fracture resistance of ultra high molecular weight polyethylene using the single specimen normalization method

    OpenAIRE

    Varadarajan, R; Dapp, E.K.; Rimnac, C.M.

    2008-01-01

    Fracture of Ultra High Molecular Weight Polyethylene (UHMWPE) components used in total joint replacements is a clinical concern. UHMWPE materials exhibits stable crack growth under static loading, therefore, their fracture resistance is generally characterized using the J-R curve. The multiple specimen method recommended by ASTM for evaluation of the J-R curve for polymers is time and material intensive. In this study, the applicability of a single specimen method based on load normalization ...

  7. Evaluation of J-initiation fracture toughness of ultra high molecular weight polyethylene used in total joint replacements

    OpenAIRE

    Varadarajan, R; Rimnac, C.M.

    2008-01-01

    Fracture of ultra high molecular weight polyethylene (UHMWPE) total joint replacement components is a clinical concern. Thus, it is important to characterize the fracture resistance of UHMWPE. To determine J-initiation fracture toughness (JQ) for metals and metallic alloys, ASTM E1820 recommends a procedure based on an empirical crack blunting line. This approach has been found to overestimate the initiation toughness of tough polymers like UHMWPE. Therefore, in this study, a novel experiment...

  8. Assessment of particulate cellulose epoxy composites manufactured by JMFIL under impact load

    Science.gov (United States)

    Srinivasababu, Nadendla

    2015-08-01

    Increase in environmental concern towards sustainable development invites the development of new materials which are eco-friendly to satisfy various engineering needs. The present work introduces a new manufacturing method i.e. "Just Mold Fill and Immediate Loading" to prepare epoxy composites reinforced at different contents of particulate cellulose. The fabricated composites specimens are post processed and machined, tested as per ASTM procedures under impact load.

  9. 天然气净化厂酸性原料气管道的焊接及焊后热处理工艺%Welding and Post Weld Heat Treatment Technology of Sour Feed Gas Pipelines in Nature Gas Purification Plant

    Institute of Scientific and Technical Information of China (English)

    徐庆海

    2013-01-01

    采用氩电联焊成功地应用于川东北高含硫化氢气田天然气净化厂原料气管道的焊接,总结了L245NS、L360QS、ASTM A106 Gr.B等抗硫材质管道的焊接及焊后热处理工艺.

  10. Experimental determination of construction materials thermal and physics properties for energy conservation; Determinacao experimental das propriedades termicas e fisicas de materiais de construcao para a conservacao de energia

    Energy Technology Data Exchange (ETDEWEB)

    Pietrobon, Carmen L. da R. [Universidade Estadual de Maringa, PR (Brazil). Dept. de Engenharia Quimica]. E-mail: carmen@cybertelecom.com.br; Pietrobon, Claudio E. [Universidade Estadual de Maringa, PR (Brazil). Dept. de Engenharia Civil

    2000-07-01

    This paper presents the development of appropriate instruments to obtain the following properties: medium specific heat and thermal conductivity of some construction materials. The standards used are: Astm C-351 (1982) from USA, Din 51406 (1976) from Germany and thermal probe which mathematical and physical model was defined by CARSLAW-JAEGER (1960).The aim of this procedures is to use it in buildings thermal and energetic performance software. (author)

  11. 46 CFR 164.007-4 - Testing procedure.

    Science.gov (United States)

    2010-10-01

    ... weight, in an atmosphere at 23° ±1 °C. (73 °F. ±2°) and 50 percent relative humidity. (2) Transfer to a... weight with air being maintained at a relative humidity of 40 to 70 percent and a temperature of 15° to... further definition of the time-temperature curve, see Appendix I of the ASTM Standard E-119, “Fire...

  12. The Chemical Composition and Physical Properties of the Light and Heavy Tar Resulted from Coconut Shell Pyrolysis

    Directory of Open Access Journals (Sweden)

    Uswatun Hasanah

    2012-10-01

    Full Text Available The tar resulted from pyrolysis of coconut shell is a waste. It is important to be clarified their chemical composition and physical properties in order to find out their feasibility as source of a fuel. This research was resulted two immiscible organic fractions, and these were further determined their physical properties such as water composition by using ASTM D-95 methods, ash composition (ASTM D-482, flash point C.O.C (ASTM D-92, kinematics of viscosity (ASTM D-445, and caloric valued using bomb calorimetric. In addition, tar composition was determined by gas chromatography-mass spectrometry (GCMS. The result provided oil which was categorized as light and heavy bio-oils. The light bio-oil has specific gravity 0.99, ash content 0.01%, kinematics viscosity 25.5 cSt, flash point <27 oC, pH 3 and heating value 10304 kcal/kg. On the other hand, heavy bio- oils gave specific gravity 1.13, ash 0.46%, kinematics viscosity 185 cSt, flash point 134 oC, pH 2.5 and heating value 6210 kcal/kg. Moreover, the light bio-oil contained 79 compounds which was composed of phenol 16.4%, hydrocarbon 12.4%, phenolic 27.6%, other oxygenated compounds 53.6%, and acetic acid 3%, meanwhile the heavy bio-oils contained of 18 compounds which was consisted of phenol 31.2%, lauric acid 6.0%, phenolic 27.6%, and other oxygenated compounds 35.3%, respectively. With this result, it was clarify that these bio-oils could not be used directly as a fuel for motor nor diesel machinery.

  13. Evaluation of self-combustion risk in tire derived aggregate fills

    OpenAIRE

    Arroyo Alvarez de Toledo, Marcos; San Martin, Ignacio; Olivella Pastallé, Sebastià; Saaltink, Maarten Willem

    2011-01-01

    Lightweight tire derived aggregate (TDA) fills are a proven recycling outlet for waste tires, requiring relatively low cost waste processing and being competitively priced against other lightweight fill alternatives. However its value has been marred as several TDA fills have self-combusted during the early applications of this technique. An empirical review of these cases led to prescriptive guidelines from the ASTM aimed at avoiding this problem. This approach has been successful in avoidin...

  14. Sorbent biomaterials for cleaning up hydrocarbon spills on soil and bodies of water

    OpenAIRE

    Diana Paola Ortíz González; Fabio Andrade Fonseca; Gerardo Rodríguez Niño; Luis Carlos Montenegro Ruiz

    2010-01-01

    This study was aimed at identifying and evaluating natural organic materials which could be used as sorbents in clean-up operations following hydrocarbons spills on both soils and bodies of water. The sorption capacity of three materials (sugarcane fibre, coco fibre and water Eichornia crassipies was evaluated with three hydrocarbons (35°, 30° and 25°API) and two types of water (distilled and artificial marine water) adopting the ASTM F-726 standard and following the methodology suggested i...

  15. A method for predicting service life of zinc rich primers on carbon steel

    Science.gov (United States)

    Hoppesch, C. W.

    1986-01-01

    The service life of zinc rich primers on carbon steel can be estimated by immersing a primer coated glass slide into an aqueous copper sulfate solution and measuring the amount of zinc that reacts with the copper in 15 minutes. This zinc availability test was used to evaluate eleven primers currently available for which marine beach exposure data was available from previous programs. Results were evaluated and a correlation between zinc availability and ASTM rust grade was shown.

  16. Polyurethane Grouted Gravel Type Geomaterials—A Model Study on Relations Between Material Structure and Physical–Mechanical Properties

    Czech Academy of Sciences Publication Activity Database

    Ščučka, Jiří; Martinec, Petr; Souček, Kamil

    2015-01-01

    Roč. 38, č. 2 (2015), s. 229-242. ISSN 0149-6115 R&D Projects: GA MŠk ED2.1.00/03.0082 Institutional support: RVO:68145535 Keywords : grouting * structural and textural parameters * physical and mechanical properties * composite materials * polyurethane Subject RIV: JJ - Other Materials Impact factor: 0.605, year: 2013 http://www.astm.org/DIGITAL_LIBRARY/JOURNALS/GEOTECH/PAGES/GTJ20140100.htm

  17. Development of fine-grain size titanium 6Al–4V alloy sheet material for low temperature superplastic forming

    International Nuclear Information System (INIS)

    Fine-grained titanium 6Al–4V alloy, which typically has a grain size of about 1–2 μm, can be made to superplastic form at around 800 °C with special processing. The normal temperature for superplastic forming (SPF) with conventional titanium 6Al–4V sheet material is 900 °C. The lower temperature performance is of interest to the Boeing Company because it can be exploited to achieve significant cost savings in processing by reducing the high-temperature oxidation of the SPF dies, improving the heater rod life for the hot presses, increasing operator safety and replacing the chemical milling operation to remove alpha case contamination with a less intensive nitric hydrofluoric acid etchant (pickle). In this report, room temperature tensile tests and elevated temperature constant strain rate tensile tests of fine-grained Ti–6Al–4V sheets provided by the Baoti Company of Xi'an, China, were conducted according to the test method standards of ASTM-E8 and ASTM-E2448. The relationships among the processing parameters, microstructure and superplastic behavior have been analyzed. The results show that two of the samples produced met the Boeing minimum requirements for low-temperature superplasticity. The successful material was heat-treated at 800 °C subsequent to hot rolling above the beta transus temperature, Tβ-(150–250 °C). It was found that the sheet metal microstructure has a significant influence on superplastic formability of the Ti–6Al–4V alloy. Specifically, fine grains, a narrow grain size distribution, low grain aspect ratio and moderate β phase volume fraction can contribute to higher superplastic elongations

  18. 46 CFR 160.151-21 - Equipment required for SOLAS A and SOLAS B inflatable liferafts.

    Science.gov (United States)

    2010-10-01

    ... by Regulation -III/38.5.1.5 may be used if, during the towing test, a sea anchor of their design does.../38.5.1.5 if, during the towing test, a sea anchor of their design can be hauled in by one person. (f....1.13 must be a Type I or Type III flashlight constructed and marked in accordance with ASTM F...

  19. 万能拉力试验机检定标准的研讨%Discussion on Standards for Calibration of Universal Tensile Testing Machine

    Institute of Scientific and Technical Information of China (English)

    王树人; 张丽荣

    2007-01-01

    通过对JJG139-1999和ASTM E4-03(方法C)标准的对比,指出两种标准对万能拉力试验机在检定方法上具有等效性,为按照API Spec 5L标准生产的钢管采用万能拉力试验机进行检定提供了理论依据.

  20. Hanford enhanced waste glass characterization. Influence of composition on chemical durability

    Energy Technology Data Exchange (ETDEWEB)

    Fox, K. M. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Edwards, T. B. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-06-01

    This report provides a review of the complete high-level waste (HLW) and low-activity waste (LAW) data sets for the glasses recently fabricated at Pacific Northwest National Laboratory and characterized at Savannah River National Laboratory (SRNL). The review is from the perspective of relating the chemical durability performance to the compositions of these study glasses, since the characterization work at SRNL focused on chemical analysis and ASTM Product Consistency Test (PCT) performance.

  1. Modified rubberized stone matrix asphalt for Nineveh roads

    Institute of Scientific and Technical Information of China (English)

    Al-Hadidy AI; TAN Yi-qiu

    2008-01-01

    To evaluate the effects of Crumb Rubber Modifiers (CRMS) on basic engineering properties (i. e.Marshall, tensile strength, and compressive strength) of stone matrix asphalt mixtures, the ASTM testing and procedures were employed. Results of the evaluation were used to quantify the effect of CRM source and CRM content on engineering properties at testing temperatures of 25℃and 60℃. Statistical models were developed, which represent the nature of effects on performance-related properties of stone matrix asphalt mixtures.

  2. Applications of Automation Methods for Nonlinear Fracture Test Analysis

    Science.gov (United States)

    Allen, Phillip A.; Wells, Douglas N.

    2013-01-01

    Using automated and standardized computer tools to calculate the pertinent test result values has several advantages such as: 1. allowing high-fidelity solutions to complex nonlinear phenomena that would be impractical to express in written equation form, 2. eliminating errors associated with the interpretation and programing of analysis procedures from the text of test standards, 3. lessening the need for expertise in the areas of solid mechanics, fracture mechanics, numerical methods, and/or finite element modeling, to achieve sound results, 4. and providing one computer tool and/or one set of solutions for all users for a more "standardized" answer. In summary, this approach allows a non-expert with rudimentary training to get the best practical solution based on the latest understanding with minimum difficulty.Other existing ASTM standards that cover complicated phenomena use standard computer programs: 1. ASTM C1340/C1340M-10- Standard Practice for Estimation of Heat Gain or Loss Through Ceilings Under Attics Containing Radiant Barriers by Use of a Computer Program 2. ASTM F 2815 - Standard Practice for Chemical Permeation through Protective Clothing Materials: Testing Data Analysis by Use of a Computer Program 3. ASTM E2807 - Standard Specification for 3D Imaging Data Exchange, Version 1.0 The verification, validation, and round-robin processes required of a computer tool closely parallel the methods that are used to ensure the solution validity for equations included in test standard. The use of automated analysis tools allows the creation and practical implementation of advanced fracture mechanics test standards that capture the physics of a nonlinear fracture mechanics problem without adding undue burden or expense to the user. The presented approach forms a bridge between the equation-based fracture testing standards of today and the next generation of standards solving complex problems through analysis automation.

  3. EMISSION REDUCTION FROM A DIESEL ENGINE FUELED BY CERIUM OXIDE NANO-ADDITIVES USING SCR WITH DIFFERENT METAL OXIDES COATED CATALYTIC CONVERTER

    OpenAIRE

    B. JOTHI THIRUMAL; E, JAMES GUNASEKARAN; LOGANATHAN; C.G. Saravanan

    2015-01-01

    This paper reports the results of experimental investigations on the influence of the addition of cerium oxide in nanoparticle form on the major physiochemical properties and the performance of diesel. The fuel is modified by dispersing the catalytic nanoparticle by ultrasonic agitation. The physiochemical properties of sole diesel fuel and modified fuel are tested with ASTM standard procedures. The effects of the additive nanoparticles on the individual fuel properties, the engine performanc...

  4. Influence of corrosive atmospheres on the properties of refractories in operation of waste incineration plants; Einfluss korrosiver Bedingungen auf die Eigenschaften feuerfester Werkstoffe in Anlagen der thermischen Abfallverwertung

    Energy Technology Data Exchange (ETDEWEB)

    Tonnesen, Thorsten; Telle, Rainer [RWTH Aachen (Germany). Inst. fuer Gesteinshuettenkunde

    2009-07-01

    The corrosion mechanisms of different refractories in operation of waste incineration plants are presented. A testing method in steam atmosphere according to ASTM was used to determine the oxidation resistance. The experiments at 1000 C proved an excellent stability in shape dimensions of the refractories and low volume change below 1 %. Furthermore vapour phase corrosion experiments with SiC mortars and evaluation of slag corrosion tests of high alumina bricks after use in a waste incineration plant have been performed. (orig.)

  5. Solubility of Nickel in Mg-Al, Mg-Al-Fe, and Mg-Al-Mn Systems

    OpenAIRE

    Tathgar, Harsharn S.

    2001-01-01

    The corrosion properties of magnesium alloys strongly depend on the alloy composition and impurities. Heavy elements like nickel, and iron have low solubility in solid magnesium. The dissolved elements in molten magnesium precipitate out on solidification and form intermetallic particles that are the cause of corrosion. Iron content should be kept below the standards specified by ASTM B94/94 using aluminium and manganese. Manganese forms intermetallic particles with iron and aluminium thereby...

  6. Producción de biodiesel asistida por ultrasonidos

    OpenAIRE

    Sáez Bastante, Javier

    2015-01-01

    The continuous increase of fossil fuel prices has raised interest in searching for new forms of energy to power internal combustion engines. Among the most promising options is biodiesel. According to ASTM (American Society for Testing and Materials Standard) specifications, biodiesel is described as monoalkyl esters of long chain fatty acids derived from renewable lipids such as vegetable oils or animal fats used in ignition engines. The process leading to biodiesel is called ...

  7. Morteros de cementos alcalinos. Resistencia química al ataque por sulfatos y al agua de mar

    OpenAIRE

    Fernández-Jiménez, Ana; Puertas, F.; Gutierrez, R.; Delvasto, S.; Maldonado, J.

    2002-01-01

    The durability and chemical resistance of alkali activated slag and fly ash/slag mortars in contact with sulfates and seawater media have been studied. Two methods were used in the evaluation of such durability: Kock-Steinegger and ASTM CI012. A mineralogical and a microstructural characterization of mortars were done at different ages of their conservation in aggressive media through XRD, SEM/EDX and mercury porosimetry. Results showed a high durability of activated cement mortars i...

  8. Alkaline cement mortars. Chemical resistance to sulfate and seawater attack

    OpenAIRE

    Puertas, F.; Gutiérrez, R.; Fernández-Jiménez, A.; Delvasto, S.; Maldonado, J.

    2002-01-01

    The durability and chemical resistance of alkali activated slag and fly ash/slag mortars in contact with sulfates and seawater media have been studied. Two methods were used in the evaluation of such durability: Kock-Steinegger and ASTM C1012. A mineralogical and a microstructural characterization of mortars were done at different ages of their conservation in aggressive media through XRD, SEM/ EDX and mercury porosimetry. Results showed a high durability of activated cement mortars in s...

  9. Experimental Analysis of Heat Transfer Behavior inside Heat Pipe Integrated with Cooling Plates

    OpenAIRE

    Chen-Ching Ting; Chien-Chih Chen

    2011-01-01

    This work used experimental methods to study heat transfer behavior inside a heat pipe and found that heat transfer behavior inside the heat pipe was changed due to its integration with cooling plates. This change caused the heat pipe to have copper-like heat transfer behavior. Experimental performances first built a CPU simulator with maximum heat power 300 W in accordance with the ASTM standard as heat source and measured temperature distribution by using infrared thermography and thermocou...

  10. Vibrational Analysis and Mechanical Properties of Epoxy Composite Material for Automobile Leaf Spring

    OpenAIRE

    Prabhakaran, M; M.Rajendran

    2015-01-01

    The composites have found extensive application in various fields. The aim of this work is to analyze the mechanical properties and damping effect of the laminates of the composites. The vibration in the composite material that to be used in the application of automobiles for the purpose of leaf spring has to be reduced. So the damping capacity of the composites was found out. Also the tensile and impact properties were studied using existing ASTM standard testing procedures and the results a...

  11. Pingelised päevad / Albina Heider, Kairi Kaldoja, Marina Talisainen ; vahendas Merike Määrits

    Index Scriptorium Estoniae

    Heider, Albina

    2001-01-01

    Albina Heider, Kairi Kaldoja ja Marina Talisainen on TPÜ filoloogiateaduskonna üliõpilastuutorid. Üliõpilastuutor pedagoogikaülikoolis on eriala vanema astme üliõpilane, kes peale vastava koolituse saamist omab õigust oma kompetentsi piires abistada uusi üliõpilasi info ja nõuannetega. Mida küsitakse esimestel ülikoolipäevadel üliõpilastuutorilt kõige enam

  12. Effect of crumb rubber origin on asphalt rubber hot mix laboratory performance

    OpenAIRE

    Pais, Jorge C.; Sousa, Jorge B.; Saim, Rachid; Pereira, Paulo A. A.

    2001-01-01

    Asphalt rubber traditionally has been produced with crumb rubber coming from an ambient grinding process and mostly from car tires. With this product and the binders used in Arizona and California the specifications currently present in ASTM D 6114 have been established. Nowadays relatively new types of crumb rubber are available in the markets namely those that have been produced by cryogenic methods and can then be reprocessed if desired by a further ambient step such as through a crack...

  13. Fracture Mechanical Trouser Taer Testing of thin polymer films

    OpenAIRE

    Mehmood, Nasir; Mao, Tan; Bhupati, Gaurav

    2012-01-01

    Tensile and Trouser tear tests of thin packaging polymer films have been done successfully in this research thesis. Two different polymers (PP and LDPE) are used. Mode I and Mode III fracture tests have been used for crack propagation analysis. Several experiments are performed to calculate the material parameters. The research study includes the experimental test along with virtual tests using the FEM software Abaqus 6.12-1. ASTM standard 1938-08 is followed for specimen size and experiments...

  14. Combustion Properties of Calabrian Pine (Pinus brutia Ten.) Wood Treated with Vegetable Tanning Extracts and Boron Compounds

    OpenAIRE

    BAYSAL, Ergun; YALINKILIC, M. Kemal; ÇOLAK, Mehmet; Göktaş, Osman

    2003-01-01

    Specimens prepared from Calabrian pine (Pinus brutia Ten.) wood were treated with borate-supplemented aqueous solutions of Calabrian pine bark powder, acorn powder, sumach leaf powder and gall-nut powder. Then, fire test methods containing flame source, without flame source and glowing stages was performed according to the ASTM E 160-50 American Standard. The results showed that the lowest temperature (323 °C) for the flame source stage was recorded for specimens treated with mixtures of bor...

  15. Biodegradation testing of solidified low-level waste streams

    International Nuclear Information System (INIS)

    The NRC Technical Position on Waste Form (TP) specifies that waste should be resistant to biodegradation. The methods recommended in the TP for testing resistance to fungi, ASTM G21, and for testing resistance to bacteria, ASTM G22, were carried out on several types of solidified simulated wastes, and the effect of microbial activity on the mechanical strength of the materials tested was examined. The tests are believed to be sufficient for distinguishing between materials that are susceptible to biodegradation and those that are not. It is concluded that failure of these tests should not be regarded of itself as an indication that the waste form will biodegrade to an extent that the form does not meet the stability requirements of 10 CFR Part 61. In the case of failure of ASTM G21 or ASTM G22 or both, it is recommended that additional data be supplied by the waste generator to demonstrate the resistance of the waste form to microbial degradation. To produce a data base on the applicability of the biodegradation tests, the following simulated laboratory-scale waste forms were prepared and tested: boric acid and sodium sulfate evaporator bottoms, mixed-bed bead resins and powdered resins each solidified in asphalt, cement, and vinyl ester-styrene. Cement solidified wastes supported neither fungal nor bacterial growth. Of the asphalt solidified wastes, only the forms of boric acid evaporator bottoms did not support fungal growth. Bacteria grew on all of the asphalt solidified wastes. Cleaning the surface of these waste forms did not affect bacterial growth and had a limited effect on the fungal growth. Only vinyl esterstyrene solidified sodium sulfate evaporator bottoms showed viable fungi cultures, but surface cleaning with solvents eliminated fungal growth in subsequent testing. Some forms of all the waste streams solidified in vinyl ester-styrene showed viable bacteria cultures. 13 refs., 12 tabs

  16. Kinetic Analysis of Char Thermal Deactivation

    DEFF Research Database (Denmark)

    Zolin, Alfredo; Jensen, Anker; Dam-Johansen, Kim

    2001-01-01

    . Leached straw deactivates significantly, but maintains at any heat-treatment temperature a higher reactivity than the other chars. The inertinite-rich coal Blair Athol is more resistant to deactivation than two vitrinite-rich coals of the same ASTM rank, Cerrejon and Illinois no. 6. Cerrejon and Illinois...... that TGA experiments can be used to capture the reactivity differences of chars observed in combustion facilities....

  17. Pipeline repair technology damage and repair assessment of pipelines with high residual stresses

    OpenAIRE

    Høie, Øyvind

    2015-01-01

    Today in the offshore industry, there are an increasing number of pipelines that require both maintenance and repair. A wide specter of research in pipeline repair technology is available. Damage to a pipeline could be a quite complex event to analyze, due to the many different combinations of internal pipe stresses and damage types. Standards, such as DNV and ASTM have experimental based assessment methods for evaluating many of these damage combinations, however, there are some of these met...

  18. A CO2 Waveform Simulator for Evaluating and Testing of Respiratory Gas Analyzers

    OpenAIRE

    Long, Christina; Orr, Joseph

    2011-01-01

    Introduction: This paper describes a carbon dioxide (CO2) waveform simulator designed to evaluate and test the performance of capnographs, which are clinically used respiratory gas analyzers that continuously measure CO2. Currently, capnographs are tested for minimum performance standards according to guidelines specified by the International Organization for Standardization (ISO) and the American Society for Testing and Materials (ASTM). However, capnographs that meet these guidelines are no...

  19. Charpy Impact Test on Polymeric Molded Parts

    OpenAIRE

    Alexandra Raicu

    2012-01-01

    The paper presents the Charpy impact tests on the AcrylonitrileButadiene-Styrene (ABS) polymeric material parts. The Charpy impact test, also known as the Charpy V-notch test, is a standardized strain rate test which determines the amount of energy absorbed by a material during fracture. This is a typical method described in ASTM Standard D 6110. We use for testing an Instron - Dynatup equipment which have a fully integrated hardware and software package that let us capture ...

  20. Korrosionsuntersuchungen an scandiumhaltigen AlZnMgCu-Legierungen unter besonderer Berücksichtigung des Einflusses intermetallischer Phasen

    OpenAIRE

    Wloka, Joachim Peter

    2007-01-01

    Ziel der vorliegenden Arbeit ist es, den Einfluss von Scandium auf die Korrosionseigenschaften von schweißbaren AlZnMgCu(Sc)-Legierungen zu untersuchen. Dazu wurden zunächst standardisierte Untersuchungen nach ASTM durchgeführt. Trotz sehr aggressiver Bedingungen zeigten sich in Abhängigkeit des Scandiumgehaltes Unterschiede im Korrosionsverhalten. Diese sind allerdings nicht eindeutig, da sich scandiuminduzierte Mikrostrukturänderungen teilweise konträr auf die Korrosionseigenschaften auswir...

  1. TEST METHOD OF CRACK TIP OPENING DISPLACEMENT (CTOD) AND THE DUCTILE FRACTURE PROPERTIES OF TURBINE ROTOR MATERIAL%CTOD试验方法与转子材料的延性断裂性能

    Institute of Scientific and Technical Information of China (English)

    包陈; 蔡力勋

    2012-01-01

    Comparative study on differences of the formula of CTOD (crack tip opening displacement) computation and the evaluation of resistance curve between GB/T 21143-2007 and ASTM E1820-08a were conducted. Then by using compliance method, experiments on crack tip opening displacement (CTOD) for turbine rotor material Cr2Ni2MoV were carried out, and the experimental data were analyzed by use of the two test standards , respectively. The results show that, there are some mistakes in expressions of the CTOD calculation and blunt line equation recommended by GB/T 21143-2007, and corresponding correct expressions are proposed. Generally, the values of CTOD obtained by ASTM E1820-08a are slightly lower than those obtained by GB/T 21143-2007. The choice of blunt line equation has notable influence on the determination of critical CTOD of crack growth onset.%对国标GB/T 21143-2007和美标ASTM E1820-08a中的CTOD (crack tip opening displacement)计算公式和阻力曲线评定方法进行对比研究,采用柔度法完成汽轮机转子材料Cr2Ni2MoV钢的CTOD试验,并分别根据两个标准对试验结果进行分析.结果表明,GB/T 21143-2007中的CTOD计算公式和钝化线方程存在不合理的表达,对其进行相应修正;根据ASTM E1820-08a得到的CTOD值通常稍低于由GB/T 21143-2007得到的结果;钝化线方程的选取对启裂CTOD临界值的确定影响显著.

  2. Twenty new ISO standards on dosimetry for radiation processing

    International Nuclear Information System (INIS)

    Twenty standards on essentially all aspects of dosimetry for radiation processing were published as new ISO standards in December 1998. The standards are based on 20 standard practices and guides developed over the past 14 years by Subcommittee E10.01 of the American Society for Testing and Materials (ASTM). The transformation to ISO standards using the 'fast track' process under ISO Technical Committee 85 (ISO/TC85) commenced in 1995 and resulted in some overlap of technical information between three of the new standards and the existing ISO Standard 11137 Sterilization of health care products - Requirements for validation and routine control - Radiation sterilization. Although the technical information in these four standards was consistent, compromise wording in the scopes of the three new ISO standards to establish precedence for use were adopted. Two of the new ISO standards are specifically for food irradiation applications, but the majority apply to all forms of gamma, X-ray, and electron beam radiation processing, including dosimetry for sterilization of health care products and the radiation processing of fruit, vegetables, meats, spices, processed foods, plastics, inks, medical wastes, and paper. Most of the standards provide exact procedures for using individual dosimetry systems or for characterizing various types of irradiation facilities, but one covers the selection and calibration of dosimetry systems, and another covers the treatment of uncertainties using the new ISO Type A and Type B evaluations. Unfortunately, nine of the 20 standards just adopted by the ISO are not the most recent versions of these standards and are therefore already out of date. To help solve this problem, efforts are being made to develop procedures to coordinate the ASTM and ISO development and revision processes for these and future ASTM-originating dosimetry standards. In the meantime, an additional four dosimetry standards have recently been published by the ASTM but have

  3. ASTM出版杀虫剂配制与使用方法手册

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    由美国试验与材料学会(ASTM)出版的ASTM STP 1520《杀虫剂配制与使用方法第29卷:配制与增效技术》收录了与杀虫剂应用及雾滴漂移控制技术有关的农作物保护技术和管理法规的最新进展。

  4. The Effect of Some Boron Compounds and Water Repellents on the Fire Resistance Properties of Scotch Pine Wood

    OpenAIRE

    Yalçın ÖRS; Musa ATAR

    1999-01-01

    This investigation was designed to improve the fire-resistance properties of polyethlene glycole (PEG-400) and some water repellent solutions used to improve the flammability properties of wood. For this reason, samples from Scotch pine wood were impregnated according to ASTM-D 1413-76 boric acid, borax, sodium perbo-rate diluted or dissolved in PEG-400 were used as a preservative materials, and paraffin, styrene, methylmethacrylate and wax were used as a water repellent materials. It was fo...

  5. Biodiesel production, characterization, diesel engine performance, and emission characteristics of methyl esters from Aphanamixis polystachya oil of Bangladesh

    International Nuclear Information System (INIS)

    Highlights: • Properties of methyl ester and its blends followed by engine performance and emission study. • The properties of APME and its blends are comparable with ASTM D6751 and ASTM D7467 standards. • APME5 and APME10 gave average reduction in torque, BP, CO and HC but increased BSFC and NO. • APME5 and APME10 can be used as a diesel fuel substitute with no engine modifications. - Abstract: This paper presents the prospect of biodiesel derived from Aphanamixis polystachya oil in diesel engine. The study deals with the physicochemical properties of A.polystachya methyl ester (APME) and its blends followed by evaluation of performance and emission characteristics of APME5 and APME10 in a multi-cylinder diesel engine. It has been observed that the properties of biodiesel and its blends are compatible with the ASTM D6751 and ASTM D7467 standards, respectively. It was found that, APME5 and APME10 showed an average 0.9% and 1.81% reduction in torque and 0.9% and 2.1% reduction in brake power (BP), and 0.87% and 1.78% increase in brake specific fuel consumption (BSFC) compared to diesel. In the case of engine emissions, diesel blends of APME gave an average reduction in carbon monoxide (CO) and hydrocarbon (HC) emissions compared to pure diesel. However, APME blends emitted higher levels of nitrous oxide compared to diesel. It was found that APME5 and APME10 could be used as a diesel fuel substitute without any engine modifications

  6. Investigation some of the properties of fossil fuels and liquid biofuels blends for utilize at SI engines / Fosil ve Sıvı Biyoyakıtların SI Motorlarında Yararlı Hale Getirmek için Bazı Özelliklerinin Araştırılması

    OpenAIRE

    Nematizade, Pegah; Ghobadian, Barat; Najafi, Gholamhasan; Fathollah OMMI; Abbaszadeh, Ahmad

    2013-01-01

    In this research work, gasoline fuel was considered as the base fuel. Bioethanol, biodiesel and diesel fuel were added to gasoline as additives. The fuel blends were first prepared on different volume basis and then, some important properties of the blends including density, dynamic viscosity, kinematic viscosity and water and sediment were evaluated by following ASTM test methods. The obtained data were analyzed and the results showed that increasing the volume percentage of bioethanol, biod...

  7. Development of fine-grain size titanium 6Al–4V alloy sheet material for low temperature superplastic forming

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Tuoyang [State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan (China); Liu, Yong, E-mail: yonliu@csu.edu.cn [State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan (China); Sanders, Daniel G. [Boeing Research and Technology, Seattle, WA (United States); Liu, Bin; Zhang, Weidong; Zhou, Canxu [State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan (China)

    2014-07-01

    Fine-grained titanium 6Al–4V alloy, which typically has a grain size of about 1–2 μm, can be made to superplastic form at around 800 °C with special processing. The normal temperature for superplastic forming (SPF) with conventional titanium 6Al–4V sheet material is 900 °C. The lower temperature performance is of interest to the Boeing Company because it can be exploited to achieve significant cost savings in processing by reducing the high-temperature oxidation of the SPF dies, improving the heater rod life for the hot presses, increasing operator safety and replacing the chemical milling operation to remove alpha case contamination with a less intensive nitric hydrofluoric acid etchant (pickle). In this report, room temperature tensile tests and elevated temperature constant strain rate tensile tests of fine-grained Ti–6Al–4V sheets provided by the Baoti Company of Xi'an, China, were conducted according to the test method standards of ASTM-E8 and ASTM-E2448. The relationships among the processing parameters, microstructure and superplastic behavior have been analyzed. The results show that two of the samples produced met the Boeing minimum requirements for low-temperature superplasticity. The successful material was heat-treated at 800 °C subsequent to hot rolling above the beta transus temperature, T{sub β}-(150–250 °C). It was found that the sheet metal microstructure has a significant influence on superplastic formability of the Ti–6Al–4V alloy. Specifically, fine grains, a narrow grain size distribution, low grain aspect ratio and moderate β phase volume fraction can contribute to higher superplastic elongations.

  8. NON-DESTRUCTIVE EVALUATION WOOD POLES USED IN ELECTRIC LINE IN THE METROPOLITAN REGION OF PORTO ALEGRE

    OpenAIRE

    Eduardo Schneid; Darci Alberto Gatto; Pedro Henrique Gonzalez de Cademartori; Leandro Gonçalves Hamm; Diego Martins Stangerlin

    2011-01-01

    This study aimed to evaluate the efficiency of non-destructive method by the use of ultrasound to estimate the degradation caused by wood decay organisms on wood poles. Was made a visual evaluation by ASTM D3345 (1994) and ultrasonic evaluation with semi-direct transmission in longitudinal direction. For this, was used an ultrasound equipment and two pairs of two transducers types, a plane face and point-contact. The ultrasonic evaluations demonstrated that the utilization of point-contact tr...

  9. Penentuan Sifat Kimia Fisika Senyawa Alkaloid Hasil Isolasi Dari Daun Bandotan (Ageratum Conyzoides Linn.)

    OpenAIRE

    Hasibuan, Poppy Anjelisa Z.; Nainggolan, Marline

    2010-01-01

    Extraction, isolation and identification of alkaloid from bandotan’s leaf (Ageratum conyzoides Linn.) has been carried out. Extraction was done by maceration method by using methanol. Isolation has been carried out by adding acid base to give crude alkaloid. The isolation followed by column chromatography by using chloroform-methanol-amonia as mobile phase (85-15-1) and silica gel 60 (mesh 70-230 ASTM) as statis phase. The result of column chromatography has get one white crystal alkaloid...

  10. THE COURSE IN TESTING THE WEARING OUT OF MUD PUMPS PARTS

    Directory of Open Access Journals (Sweden)

    Davorin Matanović

    1989-12-01

    Full Text Available Piston and cylinder are such parts in the mud pumps which cause the greatest expences due to the work stoppage of drilling rig. To reduce so caused expences it is necessary to produce spare parts of better quality. In determining the abrasion wear resistance for chosen materials, so called dry sand/rubber wheel abrasion test as an ASTM standard has been used (the paper is published in Croatian.

  11. Preparation and performance of Ecobras/bentonite biodegrading films; Preparacao e desempenho de filmes polimericos biodegradaveis a base de Ecobras e bentonita

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Ana Nery M.; Melo, Nadja M.C.; Canedo, Eduardo L.; Carvalho, Laura H., E-mail: laura@dema.ufcg.edu.br [Unidade Academica de Engenharia de Materiais, Universidade Federal de Campina Grande (UAEMa/UFCG) Campina Grande, PB (Brazil); Araujo, Arthur R.A. [Felinto Industria e Comercio Ltda., Campina Grande, PB (Brazil)

    2011-07-01

    Compounds based on the biodegradable polymer Ecobras and bentonite clay in its pristine, sonicated, and organically modified with a quaternary ammonium salt forms were prepared as flat films. Clays and compounds were characterized by x-ray diffraction and scanning electron microscopy. Mechanical properties of the films were determined according to pertinent ASTM standards. Reasonable properties, higher than those of the matrix, were obtained with compounds prepared with purified clays and organoclays, particularly for low clay loading. (author)

  12. Investigation of Mechanical and Structural Properties of Blend Lignin-PMMA

    OpenAIRE

    Koray Soygun; Selçuk Şimşek; Ersen Yılmaz; Giray Bolayır

    2013-01-01

    This in vitro study investigated the mechanical and structural characteristics of lignin-added PMMA resin composites at concentrations of 1, 3, and 5% by weight. Four sample groups were formed. For the transverse strength test, the specimens were prepared in accordance with ANSI/ADA specification number 12, and for the impact test ASTM D-256 standards were used. With the intent to evaluate the properties of transverse strength, the three-point bending (n=10) test instrument (Lloyd NK5, Lloyd ...

  13. Influence of specimen thickness on cracking behavior in restrained shrinkage ring test

    OpenAIRE

    Dong, W.; Zhou, X.; Wu, Z.

    2013-01-01

    The standard test method using circular ring is adopted to assess the potential cracking of restrained shrinkage concrete by ASTM and AASHTO, respectively. The difference of them is the ring specimen thickness, which are 37.5 mm and 75 mm. To investigate the mechanism of ring tests with two concrete thicknesses, a numerical approach is proposed to simulate stress development and crack initiation in restrained concrete ring subject to circumferential drying.Afictitious temperature field is app...

  14. 7 CFR 1755.390 - RUS specification for filled telephone cables.

    Science.gov (United States)

    2010-01-01

    ... the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of ANSI/ICEA S-84... with 5 U.S.C. 552(a) and 1 CFR part 51. Copies of the ASTM standards are available for inspection... 7 Agriculture 11 2010-01-01 2010-01-01 false RUS specification for filled telephone cables....

  15. Remote Field Testing: More than just a tool for heat exchanger inspection

    International Nuclear Information System (INIS)

    The remote Field Technique (RFT) has become well established for the inspection of small diameter tubes in heat exchangers and boilers; however, this is not the only application that RFT are suited for. Now recognized by code bodies: ASTM, ASME and training authorities such as ASNT, this powerful technique is being applied today by many diverse industries for very different applications. Examples of where RFT is being used effectively are presented and discussed. (author)

  16. ENERGY POTENTIAL FROM MUNICIPAL SOLID WASTE IN TANJUNG LANGSAT LANDFILL, JOHOR, MALAYSIA

    OpenAIRE

    Amin Kalantarifard; Go Su Yang

    2011-01-01

    The objective of this study was to evaluate the composition and characteristics of the generated municipal solid waste (MSW) in order to estimate the high heating value (HHV) and feasibility of establish the incineration plan at Tanjung langsat landfill, Johor Malaysia. Solid waste sampling and laboratory analysis were carried out according to the random sampling method based on American Society of Testing and Materials (ASTM) standards to determine the waste compositions and proximate analys...

  17. Mechanical properties of kenaf bast and core fibre reinforced unsaturated polyester composites

    Energy Technology Data Exchange (ETDEWEB)

    Ishak, M R; Leman, Z; Sapuan, S M [Department of Mechanical and Manufacturing Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor (Malaysia); Edeerozey, A M M; Othman, I S, E-mail: zleman@eng.upm.edu.my [Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, 76109 Durian Tunggal, Melaka (Malaysia)

    2010-05-15

    Kenaf fibre has high potential to be used for composite reinforcement in biocomposite material. It is made up of an inner woody core and an outer fibrous bark surrounding the core. The aim of this study was to compare the mechanical properties of short kenaf bast and core fibre reinforced unsaturated polyester composites with varying fibre weight fraction i.e. 0%, 5%, 10%, 20%, 30% and 40%. The compression moulding technique was used to prepare the composite specimens for tensile, flexural and impact tests in accordance to the ASTM D5083, ASTM D790 and ASTM D256 respectively. The overall results showed that the composites reinforced with kenaf bast fibre had higher mechanical properties than kenaf core fibre composites. The results also showed that the optimum fibre content for achieving highest tensile strength for both bast and core fibre composites was 20%wt. It was also observed that the elongation at break for both composites decreased as the fibre content increased. For the flexural strength, the optimum fibre content for both composites was 10%wt while for impact strength, it was at 10%wt and 5%wt for bast and core fibre composites respectively.

  18. Characterization of the Microstructure, Fracture, and Mechanical Properties of Aluminum Alloys 7085-O and 7175-T7452 Hollow Cylinder Extrusions

    Science.gov (United States)

    Benoit, Samuel G.; Chalivendra, Vijaya B.; Rice, Matthew A.; Doleski, Robert F.

    2016-06-01

    Microstructural, tensile, and fracture characterizations of cylindrically forged forms of aluminum alloys AA7085-O and AA7175-T7452 were performed. Mechanical and fracture properties were investigated along radial, circumferential, and longitudinal directions to determine directional dependency. American Society for Testing and Materials (ASTM) test methods (ASTM E8-04 and ASTM E1820) were employed for both the tensile and fracture characterizations, respectively. The tensile and fracture properties were related to microstructure in each direction. The strength, elongation at break, and ultimate tensile strength of AA7085-O were higher than those of AA7175-T7452. AA7175-T7452 alloy failed in a brittle manner during fracture studies. AA7085-O outperformed AA7175-T7452 on fracture energy in all of the orientations studied. Smaller grain sizes on the planes normal to circumferential and longitudinal directions showed improvement in both elongation at break and fracture energy values compared to those of radial direction. Scanning electron microscopy images demonstrated cleavage fracture in AA7175-T7452 and transgranular fracture in AA7085-O.

  19. Evaluation of in-plane shear test methods for composite material laminates

    Institute of Scientific and Technical Information of China (English)

    WANG Yan-lei; HAO Qing-duo; OU Jin-ping

    2007-01-01

    In-plane shear properties of composite material laminates are very important in structural design of composite material. Four commonly used in-plane shear test methods were introduced in this paper. In order to study the differences of various shear test methods, two ASTM standard in-plane shear test methods for composite material laminates were experimentally investigated. They are ±45℃ tensile shear test (ASTM D3518) and V-notched rail shear test (ASTM D7078). Five types of composite material laminates composed of E-glass fiber fabric and vinyl ester resin were utilized, whose stacking sequences are [0]3s, [0/90]3s, [CSM/0/90]2s, [±45]3s and [(0/90)2/(±45)2/(0/90)2]s, respectively. The test results indicate that the±45℃ tensile shear test can predict shear moduli of composite material laminates accurately. However, the predictions of shear strength using±45℃ tensile shear test are significantly lower than those of V-notched rail shear test.

  20. Degradation behavior of Ni{sub 3}Al plasma-sprayed boiler tube steels in an energy generation system

    Energy Technology Data Exchange (ETDEWEB)

    Sidhu, B.S.; Prakash, S. [GZS, Bathinda (India). College of Engineering

    2005-06-01

    Boiler steels, namely, low-C steel, ASTM-SA210-Grade A1 (GrA1), 1Cr-0.5Mo steel, ASTM-SA213-T-11 (T11) and 2.25Cr-1Mo steel, ASTM-SA213-T-22 (T22) were plasma sprayed with Ni3Al. The alloy powder was prepared by mixing Ni and Al in the stoichiometric ratio of 3 to 1. The Ni-22Cr-10Al-1Y alloy powder was used as a bond coat, with a 150{mu} m thick layer sprayed onto the surface before applying the 200{mu}m coating of Ni{sub 3}Al. Exposure studies have been performed in the platen superheater zone of a coal-fired boiler at around 755{sup o}C for 10 cycles, each of 100 h duration. The protection to the base steel was minimal for the three steels. Scale spallation and the formation of a porous and nonadherent NiO scale were probably the main reasons for the lack of protection. In the case of T22-coated steel, cracks in the coatings have been observed after the first 100 h exposure cycle.