Фізико-Механічний Інститут Ім. Г.В. Карпенка Нан України
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Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves
(AREA)
Abstract
An optical method for determination of local velocity of surface acoustic waves according to which surface acoustic wave is excited on the surface of a sample, with directing probing optical beam to the surface, this is directed to photo-receiver after reflection. The optical beam is expanded by means of forming optical system, and with displacement of the photo-receiver in parallel to the direction of propagation of acoustic surface wave a signal is registered in two regions of optical beam, by the value of spatial displacement of the photoreceiver and time shift between the signals velocity is determined.
UAU201303853U2013-03-282013-03-28Optical method for determination of local velocity of surface acoustic waves
UA83213U
(en)
electromagnetic acoustic transducer, scanning arrangement for electromagnetic acoustic transducer and method for operating a scanning arrangement for electromagnetic acoustic transducer