High-frequency scattering from a spherical shell: Thickness quasiresonance

Abstract

of the radial motion from the other two (which remain coupled) is the result of an intermediate perturbation expansion of the shell equations in terms of two parameters. The structurally diffracted field of the radial motion, delivered analytically by the new structural Kirchhoff scattering theory, becomes an extended source of sound that is now likewise available analytically. The predictions to be presented of the target strength of an internal partial frame in a cylindrical shell generalize those made by Rumerman for a full end frame [J. Acoust. Soc. Am. 93, 55-65 (1993)]. 11:155aUW12. High-frequency scattering from a spherical shell: Thickness quasiresonance. Gary Steven Sammelmann (Code 130B, Coastal Systems Sta.,