Scattering of ultrasonic waves by oblate spheroidal voids of high aspect ratios

Akhlesh Lakhtakia, Vasundara V. Varadan, Vijay K. Varadan

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

The scattering of ultrasonic waves by oblate spheroidal voids of very high aspect ratios (a:b=1:20) is analyzed using the T-matrix method. By using an iterative Gram-Schmidt orthogonalization procedure, and by enforcing the unitarity and the symmetry properties of the T matrix at each iteration, numerical results are presented for normalized frequencies kpb up to 15.0. Aspect ratios up to 1:20 and such high frequencies were previously not amenable to computations using the conventional T-matrix procedure. Scattering by smooth as well as rough voids having periodically corrugated surfaces is studied. All computations were carried out on a DEC VAX 11/730 minicomputer.

Original languageEnglish (US)
Pages (from-to)4525-4530
Number of pages6
JournalJournal of Applied Physics
Volume58
Issue number12
DOIs
StatePublished - Dec 1 1985

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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