Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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The Variations of Tensile and Fatigue Properties in the Hydroforming Process

하이드로포밍 공정 전후의 인장 및 피로 물성 변화

  • 오충석 (금오공과대학교 기계공학부) ;
  • 권순규 ((주)화신 기술연구소) ;
  • 최병익 (한국기계연구원 나노공정장비연구센터)
  • Published : 2007.12.01
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Abstract

Hydroforming is a cost-effective way of shaping malleable metals such as steel into lightweight, structurally stiff and strong pieces. With the increased use of the hydroformed components in automotive and aerospace industries, it is important to know the variations of the mechanical properties in the hydroforming process far the safe and durable design purposes. The principal goal of this paper is to suggest a procedure to evaluate the variations of tensile and fatigue properties before and after a hydroforming process. A miniature specimen, which is 0.2 mm thick and 2.3 mm wide, is devised and tested to measure local mechanical properties. The effects of specimen size, defects, surface roughness, and hydroforming on the tensile and fatigue behaviors are discussed.

Keywords

References

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