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Fatigue Life Prediction for Resistance Spot Weldment of Aluminum Alloy Sheet  

장건익 (전주공업대학 기계과)
안병국 (전북대학교 공과대학 신소재공학부/신소재개발연구센터)
김동건 (전북대학교 공과대학 신소재공학부/신소재개발연구센터)
Publication Information
Journal of Welding and Joining / v.20, no.2, 2002 , pp. 116-124 More about this Journal
Abstract
The fatigue life is predicted on tensile-shear spot weldment made from Al-Mg alloy sheet with thickness of 0.8mm using Mitchell's method and uniform material law by $B{\ddot{a}}umel$ and Seeger based on local strain approach. The fatigue properties of critical HAZ region are estimated from the tensile property using simple hardness method. To predict the fatigue life of spot weldment, the local stresses and strains at the potential critical region are estimated by Neuber's rule. The predicted fatigue life based on uniform material law using HAZ's material properties provides good results within a factor of 3, conservatively.
Keywords
Resistance spot welding; Fatigue life; Local strain approach; Neuber's rule; Aluminium alloy sheet;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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