Surface response of a fluid loaded anisotropic solid to an impulsive point force: Application to scanning acoustic microscopy

An algorithm is presented for calculating the dynamic Green's function of two joined anisotropic elastic half-spaces. It is used to determine the surface response of a, fluid loaded anisotropic solid to an impulsive point force. Calculated images, representing the dependence of the normal displacement on time and direction, are in good agreement with published images of a number of crystals obtained with a configuration of two point focus acoustic lenses. The images show prominent features due to leaky Rayleigh and pseudosurface waves, as well as sharper lateral wave structures associated with bulk wave arrivals.