A description of the laser-induced wave excitation of surface modes at a fluid–porous medium interface using the Biot model is presented. For the case of a material much heavier than the fluid, the porous frame behaves like an elastic medium in vacuum with a small frequency-dependent structural damping due to the viscous losses. Predictions concerning the shape of the Rayleigh-like wave are given. Measurements show the effect of scattering for ceramics of different pore sizes on this wave.
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Allard et al. (2003) studied this question.
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