Diffuse waves in finite plates

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The diffuse field assumption of room acoustics is shown to lead to a relationship between the total spectral energy density of a linear elastic wave disturbance in a finite plate and the power density as observed on the surface. For times long compared with acoustic transit times across the length of the plate, the diffuse field assumption allows the theorist to neglect the details of edge reflections under the assumption that an eventual steady state energy balance is maintained amongst the different branches of wave propagation. Application of these ideas to acoustic emission source characterization is discussed.

Original languageEnglish (US)
Pages (from-to)319-335
Number of pages17
JournalJournal of Sound and Vibration
Issue number3
StatePublished - Jun 8 1984

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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