Fatigue Strength Evaluation of Adhesive Bonded and Mechanical Pressed Joints of Cold Rolled Steel Sheet

냉간압연강판 접착 및 기계적 프레스 접합부의 피로강도 평가

  • Received : 2009.07.24
  • Accepted : 2010.02.05
  • Published : 2010.02.28


The tensile and fatigue experiments were conducted with tensile-shear specimens for investigating the strength of adhesive bonded and mechanical press joints of SPCC steel sheet used in the field of the automobile industry. The optimal punch press force was evaluated 50kN for combining epoxy adhesive bonding and mechanical press joining with a diameter of 8.3mm using SPCC sheet with a thickness of 0.8mm. The combining epoxy adhesive bonding and mechanical press joining exhibits the maximum tensile force of 750N. The fatigue strengths of the combination of adhesive bond and mechanical press joint and pure adhesive joint were evaluated 370N and 320N at 106cycles, respectively. These values correspond to 22% and 20% of their maximum tensile forces, respectively. However, the fatigue strength of the combination of adhesive bond and mechanical press joining was much lower than that of pure mechanical press joining.


tensile-shear;adhesive bonding;mechanical press joining;fatigue strength


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