On the time and geometry independence of elastodynamic spectral energy density

Research output: Contribution to journalLetterpeer-review

Abstract

It is shown that the acoustic spectral energy density E(ω) deposited by an elastodynamic source is, at times, subsequent to cessation of action of the source, independent of time. It is furthermore shown that, suitably smoothed, E(ω) is independent of the distant geometry of the elastic body in which the source acts and thus that E(ω) may be calculated knowing only the source character and specimen geometry in the vicinity of the source. Inasmuch as the diffuse field assumption allows E(ω) to be estimated from simple measurements of the reverberant field, acoustic emission source character may be extractable from such measurements.

Original languageEnglish (US)
Pages (from-to)1539-1541
Number of pages3
JournalJournal of the Acoustical Society of America
Volume80
Issue number5
DOIs
StatePublished - Nov 1986

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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