Location

Brunswick, ME

Start Date

1-1-1990 12:00 AM

Description

The scattering of time-harmonic acoustic waves from an elastic solid immersed in a fluid with the transmission of elastic waves into the solid is a generic problem of interest to various disciplines. A solution strategy for this class of problems is of direct significance to the NDE community, where such knowledge can contribute to a simulation scheme for an ultrasonic immersion scanning system with randomly distributed, subsurface flaws. Use of the boundary element method (BEM) is known to be an effective tool in handling such scattering problems, especially in the mid range frequencies where asymptotic approximations fail. The strength of the method lies in exact modelling of the interaction; the drawback being its loss of efficiency in the the high frequency regime.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

9A

Chapter

Chapter 1: Fundamentals of Classical Techniques

Section

A: Elastic Wave Scattering and Flaw Sizing

Pages

85-92

DOI

10.1007/978-1-4684-5772-8_9

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Acoustic Scattering by Submerged Elastic Bodies: A Boundary Element Approach

Brunswick, ME

The scattering of time-harmonic acoustic waves from an elastic solid immersed in a fluid with the transmission of elastic waves into the solid is a generic problem of interest to various disciplines. A solution strategy for this class of problems is of direct significance to the NDE community, where such knowledge can contribute to a simulation scheme for an ultrasonic immersion scanning system with randomly distributed, subsurface flaws. Use of the boundary element method (BEM) is known to be an effective tool in handling such scattering problems, especially in the mid range frequencies where asymptotic approximations fail. The strength of the method lies in exact modelling of the interaction; the drawback being its loss of efficiency in the the high frequency regime.