Sample records for ONDES ULTRASONORES (ultrasonic waves)
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Sample records 1 - 20 shown. Select sample records:



1

Diffusion d'ondes ultrasonores hautes fréquences par cylindre ...


de P BOISSINOT - 1985Scattering of high frequency ultrasonic wave by elastic cylinder . Cas of the acoustical beams perpendicular to the cylinder axis. Philippe BOISSINOT ...

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2

Diffusion des ondes ultrasonores par le fond marin en fonction de ...


de JP LONGUEMARD - 1985Diffusion of ultrasonic waves by the sea bottom. Influence of the mean grain size. Jean-Paul LONGUEMARD. Laboratoire d'Électronique et de Physique Appliquée ...

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3

Utilisation des ondes de cisaillement ultrasonores pour l'imagerie ...


de ME HACHEMI - 2006 - Autres articlesultrasound beam emitted by the imaging system. This stress source essentially generates a shear wave that propagates with a velocity proportional to the ...

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4

Analyse de la propagation ultrasonore dans un composite stratifié ...


de A BENCHAALA - 1985Wave dispersion: Analysis of ultrasonic wave propagation in Iaminated ... Contribution à la visualisation des ondes ultrasonores (ultrasonic waves ...

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5

Diffusion of an ultrasonic wave by a simple rough surface


de O LEROY - 1985of an ultrasonic wave by a simple rough surface. Diffusion d'une onde ultrasonore par une surface rugueuse simple. Oswald LEROY. KU Leuven Campus Kortrijk, ...

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6

version finale_2_marseille


An ultrasonic Speckle Velocimetry (USV) allows us to study the stability of a complex .... des traces se fait au moyen d'un oscilloscope (Lecroy, waves ...

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7

traitement du signal 2006_volume 23_numéro spécial TS et ...


Dynamic elastography, ultrasound radiation force, shear wave, delay estimation. induites sont suivies soit par un système Doppler [2] [5], ...

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8

t t tr î ti Paul HOLLER Fraunhofer-Institut für zerstbrungsfreie ...


de P HOLLER - 1985 - Autres articlesof ultrasonic waves vibrating in the plane of incidence . ELECTROMAGNETIC ULTRASONIC TESTING ... inverse process, an ultrasonic wave, impinging on the ...

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9

surface waves (Watson transform) - I-Revues


de H ÜBERALL - 1985ment of the theory of surface waves in acoustic scattering. Pioneering development of acoustic ..... TIN, Backscattering of short ultrasonic pulses by solid ...

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10

i t t ti i for thermal wave non-destructive testing


de Y MARTIN - 1985The scattering of ultrasonic waves has been applied to the characterisation of materials and to the detec- tion of defects. Recently, thermal waves found a ...

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11

expérimentale de la diffusion d'une onde de Rayleigh par une ...


de E BARON - 1985G. A. GEORGiou et L. J. BOND,. Studies in ultrasonic wave-defect interaction, soumis pour publication à. ASME Journal of Energy Resources Technology.

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12

Vpreobrazhensky et al_cfm2009-doc


de V PREOBRAZHENSKY - 2011 - Autres articlesimaging of immersed jet in water and by detection of flow circulation in real blood-vessel “in vitro”. 2 Phase conjugate ultrasound waves in moving ...

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13

Votre titre d'article - I-Revues


ultrasonic wave and bone microstructure. These computation methods have been shown to provide valuable insight into the interaction of the ultrasonic waves ...

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14

Votre titre d'article - I-Revues


... A. SALEM, “Flow analysis by pulsed ultrasonic velocimetry technique ... capillary waves on deep water”. C.R. Mécanique 332, 565-570 (2004). ...

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15

Using velocity profiles to determine an accurate volume flow rate ...


de L Solliec - 2010 - Autres articleswhere U is the amplitude of the ultrasonic wave, ω the frequency and t the time. For chirp coded signals the frequency ω is not longer a constant but ...

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16

Ultrasonographie digestive : de l'approche transcutanée à l'abord ...


de V GILLARD - Autres articlesmitter-receiver of pulsed ultrasound which emits sets of waves lasting a micro-second with an interval of one millisecond. During these free gaps, ...

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17

Ultrasonographie digestive : de l'approche transcutanée à l'abord ...


INSTRUMENT The ultrasonography tool is the transducer : a trans- mitter-receiver of pulsed ultrasound which emits sets of waves lasting a micro-second with ...

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18

Ultrasonic scattering in textured polycrystals


de S HIRSEKORN - 1985ultrasonic waves in macroscopically isotropie as well as in textured polycrystals ; applications ... describes the scattering of ultrasonic waves by grains ...

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19

Ultrasonic nondestructive characterization of metallurgical reactions


de M ROSEN - 1985and detection of ultrasonic waves. 3. Nondestructive characterization of crys- tallization processes in metallic glasses. 4. Nondestructive characterization ...

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20

ULTRASONIC PRODUCTION OF NANO-SIZE DISPERSIONS AND EMULSIONS


de T Hielscher - 2005 - Cité 8 fois - Autres articlespressure cycle, high-intensity ultrasonic waves create small vacuum bubbles or voids in the liquid. When the bubbles attain a volume at which they can no ...

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21

UAN~LES~PINS 12 AU 16 IUIN 1989 Ultrasonic monitoring ... - I-Revues


de P DE HEERING - 1989Atalas A., "Reflection of ultrasonic waves at a liquid-cubic- solid interface", J. Acoustical Society of America 73,. (1983) pp 435-440. ...

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22

Transmission ultrasonore en faisceau borné d'une interface plane à ...


de B HOSTEN - 1985transmission coefficients of longitudinal or shear plane waves . KEY WORDS. Ultrasonic waves, bounded beams, propagation, angular spectrum, diffraction, ...

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23

Tomographie passive Observer avec du bruit


de JL LACOUME - 2007 - Cité 1 fois - Autres articlesIt works with natural or man made random waves fields. This paper ..... Basic principles, IEEE Trans.on Ultrasonic, ferroelectric ...

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24

Titre de la communication


de L GANJEHI - 2007 - Autres articlesexperiment conducted at a 1 : 100 000 scale for ultrasonic shock waves in a water tank and a numerical study are proposed to study the interaction between ...

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25

TREIZIÈME COLLOQUE GRETSI - JUAN-LES-PINS DU 16 AU 20 SEPTEMBRE 1991


de C DELEBARRE - 1991"Incohérent ultrasonic wave atténuation in inhomogeneous media" J.Acoust.Soc.Am. 76 (4°,. Oct.84 pp 1259-1261.) 2) P.C WATERMAN and R. TR UELL. ...

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26

Stabilisation d'un pont liquide par la pression de radiation ...


de B Nicolas - 2011 - Autres articles[5] Jacobi W. J. Propagation of sound waves along liquid cylinders. J. Acoust. ... dulated ultrasonic radiation pressure and stimulated drop production. ...

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27

Simulation numérique du collapse et de l'implosion ultrasonore de ...


de C Frédéric - 2011 - Autres articlesduring the ultrasonic acoustic wave induced collapse and implosion of cavitation bubbles. Mots clefs : Cavitation acoustique, Ultrasons, ...

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28

Simulation numérique de faisceaux acoustiques bornés : méthode de ...


The simulation of ultrasonic non destructive testing needs to take into account bounded acoustic beams, via a superposition of plane waves for instance. ...

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29

Simulation et essais d'un procédé de formage assisté par des ...


de LY Rith - 2011 - Autres articles[3] Siegert K. and Ulmer J. Influencing the friction in metal forming processes by superimposing ultrasonic waves. In Annals of CIRP 501, pages 195–200, ...

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30

Simulation de lignes échographiques RF pour la validation d ...


de C MARTIN - Autres articlesacoustic waves in lossy and lossless media, Acoustical. Imaging, 14, 1985, p. 521-531. ... between ultrasonic attenuation and speed in tissues and ...

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31

Scattering of short and long sound pulses: connexion with the ...


de H ÜBERALL - 1985Acoustics: Advancement of the theory of surface waves in acoustic scattering. ..... records and power spectra of scattered ultrasonic ...

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32

Scattering from inhomogeneities


waves from spherical solid inclusions, J. Acoust. Soc. Amer., 67, 1980, p. 1432-1442. ... and the ultrasonic effective properties of particulate ...

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33

Scattering from fluid and elastic layers


de H ÜBERALL - 1985Acoustics: Advancement of the theory of surface waves in acoustic scattering . ..... tic layers from their ultrasonic resonances, Proceed. ...

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34

SEPTIEME COLLOQUE SUR LE TRAITEMENT DU SIGNAL ET SES APPLICATIONS


de A FAURE - 1979 - Autres articlesultrasonic wave is emitted by a transducer, the dimension of which is smaller than those of the plate immersed in water. A calculus is carried out ...

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35

SEPTIEME COLLOQUE SUR LE TRAITEMENT DU 69"


de J LEANDRE - 1979 - Autres articlestion of an ultrasonic wave by the sea surface, we have developed a reduced model of a random swell in a small vessel. The reflected and scattered ultrasonic ...

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36

Résonance des plaques et des cylindres : ondes guidées


de JL IZBICKI - 1985The study of the normal diffusion of an ultrasonic plane wave by cylinders imbedded in water shows resonances which are the natural modes of vibration. ...

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37

Réflexion, en ondes courtes, d'un faisceau acoustique étroit à l ...


de M ROUSSEAU - 1985Acoustics, ultrasonic waves, bounded beams, liquid-solid interface, Rayleigh incidence, Rayleigh wave, Gaussian beam, piston transmitter, short ...

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38

Perturbations introduites par un ensemble de diffuseurs sur la ...


de J FROHLY - 1985Experimental and theoretical results of the study of the ultrasonic wave propagation in ... Ultrasonic waves-heterogeneous media, multiple scattering, ...

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39

Obtention numérique des modes de propagation élastiques dans un ...


de F TREYSSEDE - 2007 - Autres articlesM. D. Beard, M. J. S. Lowe, and P. Cawley 2003 Ultrasonic guided waves for inspection of grouted tendons and bolts. Journal of Materials in Civil ...

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40

Non-specular reflection of convergent beams from Iiquid-solid ...


de H BERTONI - 1985tion of ultrasonic waves incident at the Rayleigh angle onto a liquid-solid interface, J.A.P., 48, 1977, pp. 530-. 537 . T. D. K. NGOc and W, G. MAYER, ...

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41

Measurements of ltr i ris fr r si in li s


de L ADLER - 1985He bas written a book on Ultrasonic Spectroscopy and Published 120 articles in scientific .... calculate the attenuation coefficient of elastic waves ...

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42

Measurement of mechanical properties of alginate beads using ...


de AV SALSAC - 2011 - Autres articlesultrasonic compressional waves. We have shown that this technique can be applied to alginate beads of milli- metric sizes. Measurement of the ultrasound ...

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43

Mammographie ultrasonore en champ proche Near-Field Ultrasound ...


de S MENSAH - 2006 - Cité 1 fois - Autres articles[42] E.L. MADSEN et H.J. SATHOFF, Ultrasonic shear wave properties of soft tissues and tissuelike materials, J. Acoust. Soc. Am. 74(5), p. 1346-1355, 1983. ...

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44

Liquid Density Sensing Using Resonant Flexural Plate Wave - I-Revues


de JC Yu - 2007 - Cité 4 fois - Autres articlesUltrasonic plate waves for biochemical measurements, Ultrasonics Symposium, pp. 977-981,. 1989. [4]. Laurent, T., Bastien, F. O., Pommier, J.-C., Cachard, ...

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45

La tomographie d'impédance acoustique


de JP LEFEBVRE - 1985for diffraction tomography, Ultrasonic Imaging, 4,. 1982 . S. H. GRAY, One dimensional velocity inversion for acoustic waves, numerical results, J. Acoust. ...

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46

L'acoustique des faisceaux bornés


[2] Voir également L. M. BREKHOVSKIKH, Waves in Layered. Media, Academic Press, New York, 1960. ... redistribution of a Gaussian ultrasonic beam reflected ...

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47

Inverse sc rin and acoustic resonance s ectroscopy


de H ÜBERALL - 1985hidden defects by ultrasonic pulse analysis testing, J. Acoust. Soc. Amer., 35, 1963, pp. ... [23] H. ÜBERALL, Helical surface waves on cylinders and ...

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48

Influence de l'anisotropie sur le comportement des ondes ...


de VH NGUYEN - 2011 - Autres articles[1] Williams J. L. Ultrasonic wave propagation in cancellous and cortical bone : Prediction of some experi- mental results by Biot's theory. J. Acoust. Soc. ...

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49

High-Tc superconductivity in entirely end-bonded multi-walled ...


de J Haruyama - 2006 - Autres articlesand Peierls transition (charge-density waves). A carbon nanotube (CN), an ideal 1D molecular ...... into the bottom of the pores and time of ultrasonic ...

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50

High-T c superconductivity in entirely end-bonded multi-walled ...


... singularity (VHS), and Peierls transition (charge-density waves). ..... bottom of the pores and time of ultrasonic cleaning for cutting the MWNTs [ 11], ...

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51

Génération et propagation d'une onde guidée particulière sur une ...


de A JUNGMAN - 1985Diffraction, lateral displacement, liquid-solid interface, mode conversion, periodic surface, reflection, surface wave, ultrasonic spectroscopy . ...

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52

Génération de solitons dans une pycnocline par un faisceau d'une ...


de T GERKEMA - 2011 - Autres articlesOn a également utilisé des sondes ultrasoniques qui permettent de .... generation of solitary waves in the ocean thermocline. J. Fluid Mech., 593, 297–313, ...

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53

Expérience européenne de la lithotritie biliaire par ondes de choc


the shock wave focus. The proximal end of the T- tube provided a useful landmark which assisted reproducible ultrasonic localization of intrahepatic ...

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54

Experimental investigation of turbulent transport of material ...


de MN QURESHI - 2007 - Autres articles(a) Principle of acoustical Doppler velocimetry: an ultrasonic plane wave is generated by an emitter and scattered by the particle. ...

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56

Evaluation des polypes intestinaux par échoendoscopie ...


an ultrasonic image is a measure of time, not a dis- tance. Ultrasonic thickness represents the time requi- red for an ultrasound wave emitted by a ...

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58

Etude de l'endommagement des roches par mesure des vitesses ...


The velocity of compressional waves in rocks to 10 kilobars. ... Comparison of the ultrasonic velocity and mechanical resonance frequency methods with ...

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59

Estimation du profil de vitesse d'un fluide chargé par la méthode ...


de F ABDA - 2007 - Autres articlesWe present in this paper a velocity profile measurement algorithm in a charged flow using pulsed ultrasonic waves. The used method is based on estimating ...

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60

Endosonographie anale dans les fistules péri-anales, les abcès et ...


de C KUNTZ - Cité 2 fois - Autres articlesAs the ultrasound waves areemitted atan angle of90° to the horizontal axis of the anal canal, paralleltothis axis spreadingfistulas ...

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61

Endosonographie anale dans les fistules p?ri-anales, les abc?s et ...


As the ultrasound waves areemitted atan angle of90? to the horizontal axis of the anal canal, paralleltothis axis spreadingfistulas are visualized as small ...

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63

ETUDE DE LA PROPAGATIÜN D'ONDES ACOUSTIQUES EN MILIEU HETEROGENE ...


de A BENCHAALA - 1987SUMMARY The ultrasonic waves propagation in the dispersive media is studied and the material s chosen for this study are layered composite material s. The ...

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64

Détection de l'endommagement mécanique par ultrasons


de ET Mehrdad - 2011 - Autres articlesJ. of Rock Mech. and Min. Sci., 44(1), 47-66, 2007. [8] Achenbach J.D., From ultrasonics to failure prevention. Elastic waves and ultrasonic non-destructive ...

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65

DOUZlElVlE COLLOQUE GRETSI - IUAN-LES-PINS 12 AU 16 IUIN 1989


de L VIVET - 1989 - Autres articlesuse of ultrasonic waves and the resulting inspection constraints. We show that the time-domain approach is the best way to solve ...

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66

Couv n° 29.eps


sensing to estimate wind, waves and fluxes at the sea surface. The special ..... teurs-récepteurs ultrasoniques. En revanche, les instruments classiques qui ...

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67

Caractérisation des ganglions lymphatiques péridigestifs par ...


de C HADDAD - Autres articlesThe ultrasonic examination use acoustic waves for the exploitation of the elastic or rheologic ... The ultrasonic wave that penetrates in the stu- ...

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68

Caractérisation de l'endommagement localisé dans les géomatériaux ...


de S HALL - 2007 - Autres articleswave measurements. The velocities of elastic waves (e.g., ultrasonic or seismic) are sensitive to changes in elastic properties of a material and their ...

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69

Caractérisation Non Destructive des bétons par propagation d'ondes ...


de G Vincent - 2011 - Autres articles[2] J.F. Chaix, V. Garnier, G. Corneloup, Ultrasonic wave propagation in heterogeneous solid media : Theoretical analysis and experimental validation, ...

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70

Caractérisation Mécanique de l'Acier Inox par Microscopie ...


de N HARHAD - 2007and Visualisation of Leaky Rayleigh Waves for Ultrasonic NDE, IEEE. Transactions and Ultrasonics,. Ferroelectrics, and Frequency Control, Vol.44, No.3.

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71

CFM - Article v3


de M ROSSAT - 2007 - Autres articlesTo check up concrete structures ”in situ' engineers often employ ultrasonic waves. The implementation of tests and analysis of results even inversion of the ...

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72

Bernhard R. TITTMANN, Lloyd A. AHLBERG Rockwell International ...


terization of surface cracks by ultrasonic waves have revealed the power of surface acoustic waves (SAW) as a tool in nondestructive evaluation. ...

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73

Apport du traitement du signal à la modélisation d'un système d ...


de M BERNARD - 1985A theoretical modelization of the system is made using the angular spectrum development of ultrasonic waves and the propagation transfer function together ...

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74

Action des ondes acoustiques sur la stabilité des écoulements en ...


de W DRIDI - 2007 - Autres articlesstrongly increase with the intensity of the acoustic waves, indicating a good ... mensionnée À) généré par un transducteur ultrason placé au centre de la ...

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75

A Novel Piezoelectric Microtransformer for Autonmous Sensors ...


de P Sangouard - 2008 - Autres articlessubmitted to ultrasonic waves of variable frequency, the measured secondary (output) voltage V1 is in the order of 5. mV (for the resonant frequency of mode ...

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76

: sphericaI and cylindrical cavities and inclusions


Experimental results on ultrasonic wave scattering from cavities and inclusions were obtained both in the frequency domain and in the time domain (short ...

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77

9-11 April 2008 ?EDA Publishing/DTIP 2008 ISBN: 978-2-35500-006-5 ...


One can perform a transformation of this external energy, which can be originally ultrasonic or in the form of electromagnetic waves, to an electrical ...

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78

18?me Congr?s Fran?ais de M?canique Grenoble, 27-31 ao?t 2007 1 ...


T.Xue, W.Lord, Fellow IEEE, and S.Udpa, Senior Member IEEE (1997) May, Finite Element Simulation and Visualisation of Leaky Rayleigh Waves for Ultrasonic ...

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79

18?me Congr?s Fran?ais de M?canique Grenoble, 27-31 ao?t 2007 1 ...


Abstract: We present initial results of the to detect and characterise localised deformation in clays using ultrasonic wave measurements. ...

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80

18 ?me Congr?s Fran?ais de M?canique Grenoble, 27-31 ao?t 2007 1 ...


M. D. Beard, M. J. S. Lowe, and P. Cawley 2003 Ultrasonic guided waves for inspection of grouted tendons and bolts. Journal of Materials in Civil ...

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81

18 ?me Congr?s Fran?ais de M?canique Grenoble, 27-31 ao?t 2007 ...


R?f?rences Eckart, C. 1948 Vortices and streams caused by sound waves. ... in Bi-Sb alloy single crystals pulled in the presence of ultrasonic vibrations. ...

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82

18 ?me Congr?s Fran?ais de M?canique Grenoble, 27-31 ao?t 2007 ...


An experiment conducted at a 1 : 100 000 scale for ultrasonic shock waves in a water tank and a numerical study are proposed to study the interaction ...

IRevues (France)

83

18 ?me Congr?s Fran?ais de M?canique Grenoble, 27-31 ao?t 2007 ...


Abstract : We present in this paper a velocity profile measurement algorithm in a charged flow using pulsed ultrasonic waves. The used method is based on ...

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84

127 Caractérisation des ganglions lymphatiques péridigestifs par ...


DISCUSSION The ultrasonic examination use acoustic waves for the exploitation ... The ultrasonic wave that penetrates in the stu- died organ interacts with ...

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85

0 SEPTEMBRE 1991 16AU2 -LES-PINS DU s REDUITS


de G RABAU - 1991a ors que es mm eyfluldes son rea 15665 avec es e as Omeres réflection of ultrasonic waves in layeréd média. J.A.S.A., vol. 62, ...

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