IEEE 1984 Ultrasonics Symposium: Proceedings, November 14-16, 1984, Dallas Hilton Hotel, 1914 Commerce St., Dallas, Texas, Volume 2 |
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Page 568
... field distribution ( 1 ) Convolution measurment of acoustic field at focal plane . Firstly , two concave transducers are ad- justed into confocal and coaxial condition , then we make one of them move transversely . The cutput voltage of ...
... field distribution ( 1 ) Convolution measurment of acoustic field at focal plane . Firstly , two concave transducers are ad- justed into confocal and coaxial condition , then we make one of them move transversely . The cutput voltage of ...
Page 729
... field approximation is used to write an expression for pressure or velocity at any position on the aperture between the reverberant chamber and free field . Then the autocorrelation function of velocity is determined from its definition ...
... field approximation is used to write an expression for pressure or velocity at any position on the aperture between the reverberant chamber and free field . Then the autocorrelation function of velocity is determined from its definition ...
Page 828
... field by employing an algorithm which gives exact results for the case that the 1BA is ( exact- ly ) valid . The recovered object is the effective distribution , ng ( r ) . If the scattered field is considerably smaller than the incident ...
... field by employing an algorithm which gives exact results for the case that the 1BA is ( exact- ly ) valid . The recovered object is the effective distribution , ng ( r ) . If the scattered field is considerably smaller than the incident ...
Contents
JJ5 Vapor sensing by means of a Zn0onSi | 565 |
ing a laser probe | 656 |
EE2 Further studies on ultrasonic backscatter | 666 |
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absorption acoustic impedance acoustic microscope acoustic waves Acoustical Imaging amplitude analysis angle applicator attenuation attenuation coefficient backscatter bandwidth beam beamformer calculated coefficient corrosion crack curve density depth detection diffraction display echo effects elastic electrical electron element equation evaluation experimental field Figure film filter focal focus focused Fourier transform function hematocrit hydrophone IEEE incident intensity interface laser layer lens linear longitudinal wave material measured medium method mode modulation normal obtained optical output parametric array phantom phased array Phys piezoelectric plane plate probe processing propagation pulse ratio Rayleigh waves receiver reflection reflection coefficient resolution resonant sample scanning scattering shown in Fig shows signal simulation sonic spatial specimen spectral spectrum structure surface surface acoustic waves technique temperature thermal wave thermoacoustic thickness tion tissue tomography Trans transducer transmission tumor ultrasonic ultrasound velocity vibration voltage waveform wavelength width zircaloy