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http://dx.doi.org/10.7467/KSAE.2012.20.1.141

A Fatigue Related Equation with Shape and Loading Factors Representing Effect of Thickness in Al 2024-T3 Alloy Sheet  

Kim, Seung-Gwon (Department of Mechanical Engineering, Graduate School, Inha University)
Lee, Ouk-Sub (Division of Mechanical Engineering, Inha University)
Jang, Joo-Sup (Department of Mechanical & Automotive Engineering, Kyungwon University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.20, no.1, 2012 , pp. 141-146 More about this Journal
Abstract
Aluminum alloys have been used with various thicknesses suitable for light weight of structure. It is known that the thickness effect of material is an important factor affecting fatigue crack propagation under constant fatigue stress condition. In this work, we presented the behavior of fatigue crack propagation in thin plate compared to thick plate Al 2024-T3 alloy with referred thickness effect in a correlative equation determined by the shape factor and the loading factor. We chose two factors that are used in the correlative equation with considering that the experiments were carried out under a constant fatigue stress condition. The thickness ratio of thin plate compared to thick plate and the equivalent effective stress intensity factor ratio depending on thickness were chosen as shape and loading factors. A correlative equation is utilized to determine the equivalent effective stress intensity factor range of thin plate and identify the degree of increasing phenomenon of fatigue life in thin plate compared to thick plate.
Keywords
Fatigue crack propagation; Thickness effect; Shape factor; Loading factor; Fatigue related equation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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