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RISK-BASED DESIGN AND MAINTENANCE SYSTEMS AND METHODS

  • US 20090240468A1
  • Filed: 03/20/2008
  • Published: 09/24/2009
  • Est. Priority Date: 03/20/2008
  • Status: Active Grant
First Claim
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1. A method for determining an optimal inspection schedule for a structure, said method comprising:

  • determining a crack size distribution table for the structure;

    determining a plurality of risk values, each risk value for a different estimated usage hours of the structure and based on said crack size distribution table;

    estimating a first inspection interval based on a predetermined risk value threshold; and

    determining a second inspection interval based on analyzing the rate of increase of risk value and probability of detection of a crack in said first inspection interval.

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