Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Characteristics of fatigue crack propagations with respect to the angles between rolling and tensile loading directions of steel plates

강판의 압연 방향과 인장하중 방향의 상대 각도에 따른 피로 균열 진전 특성

  • 이용복 (홍익대학교 기계 시스템디자인공학과) ;
  • 오병덕 (홍익대학교 대학원 기계공학과)
  • Published : 2005.06.01
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Abstract

Steel plates used for common structures are manufactured by rolling processes in general. The rolling direction traces generated during the processes have significant influences on mechanical properties and fatigue behavior of the plates. The objective of present study is to investigate those directional characteristics for the enhancement of steel structure safety. SS400 steel plates of 3 mm thickness are tested in this study, When the angles between the tensile loading direction and the rolling direction of the plates are increased, their yield strengths are increased and elongations are rather decreased. It is also shown that fatigue crack growth rates in the plates can be increased according to the changes of those mechanical characteristics. For the safety of the structures, therefore, it is critical to decrease the angles between the rolling direction and the tensile loading direction.

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References

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