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Method and apparatus for detection of structural failure

  • US 9,784,718 B2
  • Filed: 05/12/2014
  • Issued: 10/10/2017
  • Est. Priority Date: 05/04/2007
  • Status: Active Grant
First Claim
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1. A detection system for identifying deterioration in a structure, comprising:

  • a sensor affixed to said structure and detecting a plurality of acoustic emission waves, each corresponding to a deterioration event;

    an analysis circuit having a processor receiving signals from said sensor representative of said deterioration events and identifying a corresponding first event rate, and a memory having first and second preselected factors stored therein at least partially defining first, second and third states, said analysis circuit establishing a base rate associated with said first event rate;

    said first state defined by an event rate less than said first event rate multiplied by said first preselected factor;

    said second state defined by an event rate greater than said first event rate multiplied by said first preselected factor and less than said first event rate multiplied by said second preselected factor;

    said third state defined by an event rate greater than at least said first event rate multiplied by said second preselected factor;

    said processor comparing a second event rate to said first event rate and correlating said second event rate to at least one of said first, second and third states; and

    said processor generating an alarm condition signal upon detection of said second event rate corresponding with said third state occurring for a preselected threshold time.

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