Multiple scale analysis of the nonlinear surface acoustic wave propagation in anisotropic crystals

Publisher Website
Google Scholar
Abstract
A fundamental theory of nonlinear Rayleigh wave propagation is given here. Previously, the harmonic boundary value problem was solved by means of a direct iterative procedure. The nonlinear acoustic field could only be studied near the excitation transducer. The method could not explain the nonmonotonous behavior of curves giving the amplitude of various harmonics as a function of the propagation distance. In this paper, amplitude and phase relations of harmonics are calculated also in the far field. Anisotropy effect is demonstrated in the first numerical results obtained for various quartz crystal cuts.