J. Phys. IV France 02 (1992) C1-713-C1-716
EFFETS SPATIO-TEMPORELS DE LA RÉFLEXION ET DE LA RÉFRACTION PAR UNE LAME À FACES PARALLÈLES IMMERGÉEP. CHEVÉE and M. DESCHAMPS
Laboratoire de Mécanique Physique, Université de Bordeaux I, URA C.N.R.S. N° 867, 351 Cours de la Libération, F-33405 Talence cedex, France
In the framework of linear acoustics, the diffraction effects of a field issued from a transducer with narrow aperture through an immersed solid plate, are studied. A numerical calculation using spatial Fourier analysis has been performed to obtain its evolution under harmonic, and pulsed excitation. Both isotropic and anisotropic cases are treated, taking into account the viscoelasticity, or not. Theoretical results obtained for particular materials are compared with the experience.
© EDP Sciences 1992