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XU Jun, ZHANG Yansong, ZHU Ping, CHEN Guanlong. Fatigue life analysis of lap-shear spot weld of dual phase steels[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (5): 45-48.
Citation: XU Jun, ZHANG Yansong, ZHU Ping, CHEN Guanlong. Fatigue life analysis of lap-shear spot weld of dual phase steels[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (5): 45-48.
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Fatigue life analysis of lap-shear spot weld of dual phase steels

  • Body Manufacturing and Technology Center, Shanghai Jiaotong University, Shanghai 200240, China

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  • Received Date: July 08, 2007
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  • Dual phase steel spot weld characteristic was investigated.And then fatigue strength of dual phase steel lap-shear spot weld was tested, the data for spot weld fatigue curve were obtained. The fatigue crack propagation path and failure modes of specimens were also studied.On the basis of crack propagation path local equivalent stress intensity factor keq was applied to analyze the fatigue life of dual phase steel spot weld.The test result indicated that keq was an effective parameter to predict spot weld fatigue strength prediction, which can correlate fatigue life of spot weld specimens with different thickness and weld nugget size.
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