대한조선학회논문집 (Journal of the Society of Naval Architects of Korea)

  • 제48권1호
  • /
  • Pages.56-61
  • /
  • 2011
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  • 1225-1143(pISSN)
  • /
  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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고강도강 맞대기 용접 시험편의 루트갭 변경에 따른 피로강도 평가

Fatigue Assessment of High Strength Steel with Butt Welded Joints for the Root Gap Difference

  • 김호정 (부산대학교 조선해양공학과) ;
  • 강성원 (부산대학교 조선해양공학과) ;
  • 김명현 (부산대학교 조선해양공학과)
  • Kim, Ho-Jung (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kang, Sung-Won (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Myung-Hyun (Department of Naval Architecture and Ocean Engineering, Pusan National University)
  • 투고 : 2010.08.02
  • 심사 : 2010.11.10
  • 발행 : 2011.02.20
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초록

In this study, a series of fatigue tests was conducted to evaluate fatigue strength for the root gap difference with high strength steel with butt welded joints. A finite element analysis using effective notch stress method was also performed to compare effective notch factors each other with butt welded specimens made by copper backing. The results of fatigue tests were classified according to the root gap difference. Fatigue life of butt welded specimens is presented for determining the root gap of high strength steel with butt welded joints in terms of fatigue strength. Then effective notch stress was applied to interpret fatigue strength of butt welded specimen model which is reflected actual measured dimensions. As a result, fatigue strength of high strength steel with butt welded specimens is increased by root gap gets longer in length.

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참고문헌

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