×

Applied and residual stress measurements using magnetic field sensors

  • US 7,526,964 B2
  • Filed: 01/24/2003
  • Issued: 05/05/2009
  • Est. Priority Date: 01/25/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for monitoring the stress on a structural article, said method comprising:

  • affixing a stress-sensitive material layer to the structural article, the material having a stress sensitive electrical property that varies with stress;

    simultaneously, using an electromagnetic sensor, measuring said stress sensitive electrical property and a second property that does not vary significantly with stress;

    correcting for variations in the stress sensitive electrical property, that are not due to stress, with the second property to provide a corrected stress sensitive physical property; and

    monitoring the stress on the structural article by relating said corrected stress sensitive electrical property to the stress on the article.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×