An experimental setup has been proposed and implemented for exciting and registering shear waves in rubber-like media by means of ultrasound. A shear wave was excited in a sample during the absorption of a powerful focused ultrasonic pulse of sub-millisecond duration. The profile of the originating shear wave and the velocity of its propagation were determined with the help of a focusing converter by. the displacement of a microparticle entrained by the shear wave. The measured value of the shear wave velocity was consistent with the calculated value with consideration of a shear modulus determined by independent techniques.
Department of Acoustics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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