Distortion of a caustic to the passage at a plane interface anisotropic elastic solid/perfect elastic fluid
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Accepted: 8 June 1998
The goal of this paper is to observe the distortion of a caustic to the passage at an interface. More exactly, it is a question of a plane interface between an anisotropic elastic solid and a perfect elastic fluid. We analyse the refraction of the elastic wave fronts emanating from a point source located in the solid at different distances from the interface. This study finds applications for non-destructive anisotropic materials evaluation and for acoustical microscopy.
PACS: 43.35.Cg – Ultrasonic velocity, dispersion, scattering, diffraction, and attenuation in solids; elastic constants / 43.35.Gk – Phonons in crystal lattices, quantum acoustics / 43.35.Sx – Acousto-optical effects, optoacoustics, acoustical visualization, acoustical microscopy, and acoustical holography
© EDP Sciences, 1998