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Title:Investigation into nonarbitrary fatigue crack size concept
Author(s):Kurath, Peter
Subject(s):Fatigue Crack Size Concept
Abstract:A method combining strain cycle fatigue and fracture mechanics concepts to predict a nonarbitrary crack initiation size, ai, is presented. The nonarbitrary crack size is used as a demarcation between fatigue crack initiation and propagation mode of analysis. Geometry, mean stress, and stress range all influence the value of ai. Four different geometries were analyzed and tested at various load levels. Finite element techniques were employed to predict the stress and strain distributions, as well as their ranges. Only constant amplitude loading is considered. Correlations between the analytical life predictions and experimental values of life was within approximately a factor of three in most cases. Specimens were tested in the as machined condition.
Issue Date:1978-10
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 429
Genre:Technical Report
Sponsor:Air Force Off of Scientific Res 78/10 AFOSR 77 3195 78/10
Rights Information:Copyright 1978 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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