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Scattering of S H-w ave from the tw o collinear cracks in the substrate of functionally graded piezoelectric materials
Author(s): 
Pages: 41-44,58
Year: Issue:  4
Journal: Journal of Northwest Normal University(Natural Science)

Keyword:  functionally graded piezoelectric materialSH wavestress intensity factor;
Abstract: The problem of SH-wave scattering from two collinear cracks in the substrate of functionally graded piezoelectric composite materials is discussed . Under the permeable boundary conditions , the problem is reduced to the solution of a pair of dual intergral equations by using the Fourier transforms , which are reduced to a Fredholm integral equation by the Copson method . In the end , numerical results show the effect of the frequency of wave , the half length of the crack and material gradient on the right normalized stress intensity factor .
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