A new kind of interface wave at twisted boundary of cubic crystal

Авторы: Mozhaev V.G., Tokmakova S.P.
Сборник: 1994 IEEE Ultrasonics Symposium Proceedings
Том: 2
Год издания: 1994
Первая страница: 715
Последняя страница: 718
DOI: 10.1109/ULTSYM.1994.401744
Аннотация: The propagation of interface waves at twisted basal-plane boundary of cubic crystal is investigated by using analytic and numerical at methods. The exact explicit secular equation for the bisector propagation direction is derived. In addition to the localized interface acoustic wave, earlier considered by Lim, Musgrave and Tholen, a new solution of the secular equation of leaky wave (LIAW) type have been found. It have been shown that the structure of the leaky wave solution depends on the anisotropy ratio of the crystal η. Usually LIAW is intermediated between the SH and SV bulk waves and its structure is similar to that of pseudosurface wave, propagating on the free surface of cubic crystal (PSM). But if η<2 and also the twisted angle θ>θcr, then the velocity of LIAW is greater then the velocity of shear vertical wave and the solution is similar to the high frequency pseudo-surface mode (HFPSM).
Добавил в систему: Можаев Владимир Геннадиевич

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