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An Experimental Study on the Strength Evaluation of A1-5052 Tensile-Shear Specimens Using a Mechanical Press Joining Method  

임두환 (서울산업대학교 자동차공학과 산업대학원)
이병우 (경기기계공업고등학교)
류현호 (서울산업대학교 자동차공학과 산업대학원)
김호경 (서울산업대학교 자동차공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.12, no.1, 2003 , pp. 58-64 More about this Journal
Abstract
A mechanical press joining was investigated in ender for joining A1-5052 sheets for automobile body weight reduction. Static tensile and fatigue tests were conducted using tensile-shear specimens for evaluation of fatigue strength of the joint. During Tox joining process for A1-5052 plates, using the current sheet thickness and punch diameter, the optimal applied punching force was found to be 32 kN under the current joining condition. For the static tensile-shear experiment results, the fracture mode is classified into interface fracture mode, in which the neck area fractured due to influence of neck thickness, and pull-out fracture mode due to influence of plastic deformation of the joining area. And, during fatigue tests for the A1-5052 tensile shear specimens, interface failure mode occurred in the region of low cycle. The fatigue endurance limit approached to 6 percents of the maximum applied load, considering fatigue lifetime of $2.5\times10^6$ cycles.
Keywords
Mechanical press joining; Tensile-shear specimen; Interface failure mode; Fatigue strength;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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