The Brewster wave-number concept for elastodynamics

John J. Ditri, Akhlesh Lakhtakia

Research output: Contribution to journalLetterpeer-review

3 Scopus citations


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
Issue number1
StatePublished - Jul 1993

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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