The interaction of acoustic fields with submerged elastic structures, both by propagation and scattering, is being investigated at various institutions and laboratories world-wide with ever-increasing sophistication of experiments and analysis. This book offers a collection of contributions from these research centers that represent the present state-of-the-art in the study of acoustic elastic interaction, being on the cutting edge of these investigations. This includes the description of acoustic scattering from submerged elastic objects and shells by the Resonance Scattering Theory of Flax, Dragonette and Uberall, and the interaction of these phenomena in terms of interface waves. It also includes the use of this theory for the purpose of inverse scattering, i.e. the determination of the scattered objects properties from the received acoustic backscattered signals. The problem of acoustically excited waves in inhomogeneous and anisotropic materials, and of inhomogeneous propagating waves is considered. Vibrations and resonances of elastic shells, including shells with various kinds of internal attachments, are analyzed.
Acoustic scattering experiments are described in the time domain, and on the basis of the Wigner-Ville distribution. Acoustic propagation in the water column over elastic boundaries is studied experimentally both in laboratory tanks, and in the field, and is analyzed theoretically. Ultrasonic nondestructive testing, including such aspects like probe modelling, scattering by various types of cracks, receiving probes and calibration by a side-drilled hole is also studied in details.A comprehensive picture of these complex phenomena and other aspects is presented in the book by researchers that are experts in each of these domains, giving up-to-date accounts of the field in all these aspects.
Discrete spectral analysis for solitary waves, J. Engelbrecht et al; propagation and interaction of waves in nonlinear-elastic solids with microstructures, V.I. Erofeyev; matched field processing - a powerful tool for the study of oceans and scatterers, A. Tolstoy; progress in underwater acoustic modelling, P.C. Etter; reflectivity response of a submerged layer with density, sound velocity and absorbtion gradients, R. Carbo-Fite; mathematical aspects of wave phenomena in a wave guide with elastic walls and operator polynomials, B.P. Belinskiy and J.P. Dauer; on some general mathematical properties of the system elastic plate - acoustic medium, B.P. Belinskiy; acoustic scattering from finite length cylinders encapped by two hemispheres, D. Decultot et al; acoustic scattering from a circular cylindrical shell immersed in water - generation and reradiation of guided waves, F. Leon and G. Maze; the finite element/boundary element approach to the radiation and scattering of submerged shells including internal structure or equipment, R. Miller; resonance extraction, phase matching method and the surface paths for finite elastic cylinders, X-L Bao; nonlinear waves in thermoelastic solids undergoing phase transitions, J.K. Knowles.
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