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Structure analysis and defect detection system

  • US 7,027,136 B2
  • Filed: 11/12/2003
  • Issued: 04/11/2006
  • Est. Priority Date: 11/12/2002
  • Status: Expired due to Fees
First Claim
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1. A system for analyzing the stresses in a structure, comprising:

  • a laser module including a laser light source to produce a wideband light beam;

    a plurality of sensor modules each including a single fiber Bragg grating;

    a plurality of filter modules paired with said sensor modules, wherein each said filter module includes a fixed-frequency filter device and a photodetector to produce a heterodyne beat-based or an intensity-based detector signal;

    a first set of optical fiber to communicate portions of said light beam from said laser module to said plurality of sensor modules;

    a second set of optical fiber to communicate portions of said light beam from said sensor modules to respective said filter modules; and

    a monitoring station to receive said detector signals and perform analysis thereon.

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