Proper background choice in resonance scattering by elastic shells (Q1081348)

An analytical and computational study of acoustic wave-scattering by submerged spheroidal and spherical shells is presented. The direct scattering calculations displayed here are all accomplished by means of a recently improved T-matrix formulation, suitable for submerged elastic shells, that is faster and more efficient than earlier ones. The study allows the determination of the relative shell-thickness for which the usual rigid background of metal objects in water switches to the soft one.