Numerical simulation of elastic acoustic wave interaction with surface-breaking defects
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Received Date:
2009-02-16
Accepted Date:
2009-02-28
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Abstract
In order to study the influence of defect on the surface acoustic wave, based on the theory of elastodynamics, the interaction between elastic surface acoustic waves and surface-breaking defect was simulated numerically by means of the finite element method. The interaction between the surface acoustic wave and surface-breaking defects in different depth and width was calculated, and the reflected and transmitted surface acoustic waves were obtained. And then the reflection and transmission coefficients were obtained by means of fast Fourier transform. The results show that the reflected and transmitted surface acoustic waves are induced by the interaction of defect on the acoustic wave. The reflection coefficient gradually increases and transmission coefficient decreases with the depth and width increasing.
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