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Prediction and Application of Fatigue Life on Characteristics of Fatigue Crack Propagation of Thin Sheet Alloy  

Lee, Ouk-Sub (인하대학교 기계공학부)
Kim, Seung-Gwon (인하대학교 대학원 기계공학)
Publication Information
Journal of the Korean Society for Precision Engineering / v.24, no.2, 2007 , pp. 103-109 More about this Journal
Abstract
In fatigue life prediction, it is important that fatigue life is affected by crack closure phenomenon in thin sheet Al alloy. In this research, we attempt to (1)analyze the characteristics of fatigue crack propagation in constant loading condition for thin sheet Al 2024-T3 alloy which is generally used in transportation structures, (2)identify the crack closure phenomenon in thin sheet comparing experimental results of thin and thick sheet specimen under same fatigue loading condition. In using the fatigue related material constants from these fatigue crack propagation analysis, we attempt to (3)operate the fatigue life estimating process with considering crack closure phenomenon and (4)analyze the experimental and prediction results of fatigue life in thin sheet Al alloy.
Keywords
Fatigue crack propagation; Fatigue crack growth rate; Crack closure phenomenon; Image method; Automatic measurement; C-language;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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