Acoustic source localization in anisotropic plates

Tribikram Kundu, Hayato Nakatani, Nobuo Takeda

Research output: Contribution to journalArticle

124 Scopus citations

Abstract

The conventional triangulation technique cannot locate the acoustic source in an anisotropic plate because this technique requires the wave speed to be independent of the propagation direction which is not the case for an anisotropic plate. All methods proposed so far for source localization in anisotropic plates require either the knowledge of the direction dependent velocity profile or a dense array of sensors. In this paper for the first time a technique is proposed to locate the acoustic source in large anisotropic plates with the help of only six sensors without knowing the direction dependent velocity profile in the plate. Experimental results show that the proposed technique works for both isotropic and anisotropic structures. For isotropic plates the required number of sensors can be reduced from 6 to 4.

Original languageEnglish (US)
Pages (from-to)740-746
Number of pages7
JournalUltrasonics
Volume52
Issue number6
DOIs
StatePublished - Sep 1 2012

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Keywords

  • Acoustic emission
  • Anisotropic plate
  • Lamb wave
  • Passive monitoring
  • Source localization

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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