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Nonlinear structural crack growth monitoring

United States Patent

October 1, 2002
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A method and apparatus are provided for the detection, through nonlinear manipulation of data, of an indicator of imminent failure due to crack growth in structural elements. The method is a process of determining energy consumption due to crack growth and correlating the energy consumption with physical phenomena indicative of a failure event. The apparatus includes sensors for sensing physical data factors, processors or the like for computing a relationship between the physical data factors and phenomena indicative of the failure event, and apparatus for providing notification of the characteristics and extent of such phenomena.
Welch; Donald E. (Oak Ridge, TN), Hively; Lee M. (Philadelphia, TN), Holdaway; Ray F. (Clinton, TN)
U.T. Battelle, LLC, (Oak Ridge, TN)
09/ 397,185
September 16, 1999
STATEMENT OF GOVERNMENT RIGHTS This invention was made with Government support under Contract Number DE-AC05-96OR22464 awarded by the United States Department of Energy to Lockheed Martin Energy Research Corporation, and the United States Government has certain rights in this invention.