Probabilistic Models of Fatigue Crack Growth

by Keith Ortiz, Univ of Arizona, Tucson, AZ, USA,

Abstract: The reliability of a structure against metal fatigue is a problem that has been of concern to engineers for a very long time. This problem was one of the first to be approached probabilistically, originally through the randomization of the traditional stress-life or S-N curve. In the last two decades, new probabilistic approaches have been formulated based on the fracture mechanics approach to fatigue. This paper describes and compares three contemporary approaches to the prediction of fatigue crack growth by probabilistic fracture mechanics.

Subject Headings: Probability | Cracking | Structural reliability | Fatigue (material) | Mathematical models | Metals (material) | Structural models | Structural analysis

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