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Identifying source of acoustic emissions in structures using lamb waves and vibration modes

  • US 5,635,643 A
  • Filed: 03/15/1995
  • Issued: 06/03/1997
  • Est. Priority Date: 03/15/1995
  • Status: Expired due to Term
First Claim
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1. An apparatus for determination of source location of acoustic emissions in a structure comprising:

  • a single transducer for receiving signals from acoustic emissions of said structure, said transducer receiving Lamb wave signals;

    a filtering means for separating different Lamb wave modes from said received signals;

    a means for calculating said source location of acoustic emissions in said structure from said received signals and known Lamb wave mode velocities in said structure.

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