Probabilistic detectability of structural damage using frequency sensitivity methods

Carlos M. Ferregut; Roberto A. Osegueda; Thomas W. Stephenson

doi:10.1117/12.207720

20 April 1995 Probabilistic detectability of structural damage using frequency sensitivity methods

Carlos M. Ferregut, Roberto A. Osegueda, Thomas W. Stephenson

Proceedings Volume 2446, Smart Structures and Materials 1995: Smart Systems for Bridges, Structures, and Highways; (1995) https://doi.org/10.1117/12.207720
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

Effects of experimental uncertainties on the detectability of structural damage using a frequency sensitivity method are examined. An existing theory of global damage detection based on resonant frequency changes is modified to account for the uncertainties in the frequency measurements. The effects of the uncertainties are studied by simulating a number of NDE inspections on a cantilever beam subjected to a single damage at several locations using Monte Carlo techniques. The statistics of the final damage predictions are obtained through the simulation results. The probability of detecting various levels of damage along the beam is examined by defining successful detection events.

Citation Download Citation

Carlos M. Ferregut, Roberto A. Osegueda, and Thomas W. Stephenson "Probabilistic detectability of structural damage using frequency sensitivity methods", Proc. SPIE 2446, Smart Structures and Materials 1995: Smart Systems for Bridges, Structures, and Highways, (20 April 1995); https://doi.org/10.1117/12.207720

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