The Brewster wave-number concept for elastodynamics

John J. Ditri, Akhlesh Lakhtakia

Research output: Contribution to journalLetter

3 Citations (Scopus)

Abstract

The existence of a Brewster wave number is demonstrated for the case of plane-wave reflection by a specularly smooth, planar interface joining two homogeneous, linearly elastic, isotropic solid half-spaces. Such a wave number is numerically shown to exist for two material combinations: steel-aluminum and steel-brass. The wave number can be such that plane waves are either propagating or evanescent. Since the calculated Brewster wave number is not dependent upon which of the two half-spaces contains the incident plane waves, it appears to be an intrinsic property of the bimaterial interface and hence may be useful in the characterization of such interfaces.

Original languageEnglish (US)
Pages (from-to)576-579
Number of pages4
JournalJournal of the Acoustical Society of America
Volume94
Issue number1
DOIs
StatePublished - Jan 1 1993

Fingerprint

elastodynamics
plane waves
half spaces
steels
wave reflection
brasses
aluminum
Waves
Number Concepts

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Arts and Humanities (miscellaneous)

Cite this

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The Brewster wave-number concept for elastodynamics. / Ditri, John J.; Lakhtakia, Akhlesh.

In: Journal of the Acoustical Society of America, Vol. 94, No. 1, 01.01.1993, p. 576-579.

Research output: Contribution to journalLetter

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N2 - The existence of a Brewster wave number is demonstrated for the case of plane-wave reflection by a specularly smooth, planar interface joining two homogeneous, linearly elastic, isotropic solid half-spaces. Such a wave number is numerically shown to exist for two material combinations: steel-aluminum and steel-brass. The wave number can be such that plane waves are either propagating or evanescent. Since the calculated Brewster wave number is not dependent upon which of the two half-spaces contains the incident plane waves, it appears to be an intrinsic property of the bimaterial interface and hence may be useful in the characterization of such interfaces.

AB - The existence of a Brewster wave number is demonstrated for the case of plane-wave reflection by a specularly smooth, planar interface joining two homogeneous, linearly elastic, isotropic solid half-spaces. Such a wave number is numerically shown to exist for two material combinations: steel-aluminum and steel-brass. The wave number can be such that plane waves are either propagating or evanescent. Since the calculated Brewster wave number is not dependent upon which of the two half-spaces contains the incident plane waves, it appears to be an intrinsic property of the bimaterial interface and hence may be useful in the characterization of such interfaces.

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