Beam-to-mode conversion of a high frequency Gaussian P-wave input in an elastic plate embedded in vacuum

I. T. Lu, L. B. Felsen, J. M. Klosner

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Using the complex source point method the mechanism was explored by which an incident well collimated beam excites the spectrum of guided modes that can be supported in a layered structure. A single elastic plate embedded in vacuum was chosen. Results for the P and SV potentials in successive cross sections were computed by the beam tracking algorithm and by normal mode expression. Results for these cross sections, where the field initially resembles a beam and after successive reflections has become blurred to the point that any resemblance to a beam has disappeared and the wave pattern becomes oscillatory, suggests the use of a hybrid ray-mode algorithm which can be structured to encompass automatically the transition from one good observable parametrization to the other.

Original languageEnglish (US)
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Pages57-62
Number of pages6
Volume7 A
StatePublished - 1988

ASJC Scopus subject areas

  • Engineering(all)

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