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Apparatus and method for non-destructive testing

  • US 8,156,811 B2
  • Filed: 09/15/2005
  • Issued: 04/17/2012
  • Est. Priority Date: 09/15/2004
  • Status: Active Grant
First Claim
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1. A system for non-destructive testing of a bond in a bonded article, the system comprising:

  • a laser configured to direct laser pulses onto a first surface of the bonded article and thereby induce the generation of a compressive stress waves in the bonded article that travel through the bond, the laser being further configured to direct the laser pulses in a probe-break-probe inspection sequence comprising a first laser pulse having a first fluence, a second laser pulse having a second fluence which is greater than the first fluence but less than a fluence required to break the bond, and a third laser pulse having a fluence which is approximately the same as the first fluence;

    a gauge, at least a portion of the gauge being adjacent to a second surface of the bonded article;

    a sensing coil adjacent to the gauge; and

    a magnet capable of applying a magnetic field to the second surface.

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