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The orientation dependence of coupling between Lamb and shear horizontal (SH) waves in [001]c and [011]c poled (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-xPT) single crystal plates has been studied theoretically. For a [001]c polarized PMN-PT crystals plate there is no coupling between Lamb and SH waves when thetas = npi/4 (n = 0,1, 2, ...),and the strongest coupling occurs when thetas = (2n +1)pi/8 . For...
Nonlinear self-interaction of shear waves in electro-elastic crystals is investigated based on the rotationally invariant state function. Theoretical analyses are conducted for cubic, hexagonal, and trigonal crystals. The calculations show that nonlinear self-interaction of shear waves has some characteristics distinctly different from that of longitudinal waves. First, the process of self-interaction...
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