IEEE 1984 Ultrasonics Symposium: Proceedings, November 14-16, 1984, Dallas Hilton Hotel, 1914 Commerce St., Dallas, Texas, Volume 2 |
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Page 575
... Width Measurement Images obtained with a scanning reflection acoustic microscope contain quantitative informa- tion about the vertical depths and trapsverse widths of the object surface features . It will be shown in this paper that in ...
... Width Measurement Images obtained with a scanning reflection acoustic microscope contain quantitative informa- tion about the vertical depths and trapsverse widths of the object surface features . It will be shown in this paper that in ...
Page 576
... width of the strip , and an effective line spread function h " ( xo ) that takes into account the different reflectances and vertical heights of the surfaces of the strip and the substrate . In other words , Vo ( x ) is a blurred image ...
... width of the strip , and an effective line spread function h " ( xo ) that takes into account the different reflectances and vertical heights of the surfaces of the strip and the substrate . In other words , Vo ( x ) is a blurred image ...
Page 627
... width is again less than the tempera- ture variation width when R.5a , but the image broadens as R is increased . For this case the defect signal does not reverse its phase , as in Fig . 3 ; the exponential " tail " on Ts prevents this ...
... width is again less than the tempera- ture variation width when R.5a , but the image broadens as R is increased . For this case the defect signal does not reverse its phase , as in Fig . 3 ; the exponential " tail " on Ts prevents this ...
Contents
JJ5 Vapor sensing by means of a Zn0onSi | 565 |
ing a laser probe | 656 |
EE2 Further studies on ultrasonic backscatter | 666 |
Copyright | |
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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