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RESEARCH PAPERS: Aerospace: Probabilistic Structural Design and Analysis

A Stochastic Model for Fatigue Crack Growth Rate Data

[+] Author and Article Information
K. Ortiz

Aerospace and Mechanical Engineering Department, University of Arizona, Tucson, Ariz. 85721

A. S. Kiremidjian

Department of Civil Engineering, Stanford University, Stanford, Calif. 94305

J. Eng. Ind 109(1), 13-18 (Feb 01, 1987) (6 pages) doi:10.1115/1.3187085 History: Received April 01, 1986; Online July 30, 2009

Abstract

This paper summarizes a new approach to the probabilistic modeling of fatigue crack growth. The material’s resistance to fatigue crack growth is modeled as a stochastic process, which varies randomly along the crack path. Model parameters are determined through time analysis of fatigue crack growth rate data. Predictions of the statistics of crack growth are excellent, especially for small cracks.

Copyright © 1987 by ASME
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