Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Fatigue and Fracture Toughness on Change Temperature of Spring Steel for Automobile

자동차용 스프링강의 온도변화에 따른 피로 및 파괴인성에 관한 연구

  • 김추용 (경상대학교 대학원) ;
  • 박원조 (경상대학교 기계항공공학부, 해양산업연구소) ;
  • 정재욱 (경상대학교 대학원 정밀기계공학과) ;
  • 허선철 (경상대학교 기계항공공학부, 해양산업연구소)
  • Published : 2004.04.28
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Abstract

Recently, the steel parts used for automobiles and trains are required to be used under higher stress than ever before in need of the weight down. In this study, high strength and superior toughness spring steels as the suspension material, used for automobile and railroad industries were utilized to carry out the following in vestigations; 1) To evaluate the characteristics of fatigue crack propagation, the experiments of fatigue crack growth were respectively carried out at the room temperature(RT), $100^{\circ}C$, $200^{\circ}C$ 2) Peening and unpeening materials at the each temperature were investigated for the effect on fracture toughness by compressive residual stress generated from the shot peeing.

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