Measurement of Acoustoelastic Coefficient with Leaky Surface Wave

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Date
1997
Authors
Kawashima, Koichiro
Fujii, Ikuya
Sato, Takeshi
Okade, Motohiro
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Abstract

Acoustoelastic stress measurement has been established for bulk shear wave, in particular with birefringence of the wave. This method, however, evaluates only average stress over thickness of a sample. Some preliminary studies have been reported for local surface stress measurement with Rayleigh or leaky Rayleigh wave. An approach using an acoustic microscope operated with burst waves over 100MHz [1, 2] is markedly sensitive to surface roughness and anisotropy of grains due to very short wave length of the wave. The other approach using contact transducers needs long propagation distance [3, 4].

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Wed Jan 01 00:00:00 UTC 1997
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