대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제46권6호
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  • Pages.345-350
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  • 2008
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
권호 표지

실험적 변위측정위치에 따른 구속효과 A2의 거동

Experimental Behaviors of Constraint Effect A2 depending on Opening Displacement Measurement near Crack Front for SS400.

  • 한민수 (목포해양대학교 기관시스템공학부 대학원) ;
  • 장석기 (목포해양대학교 기관시스템공학부)
  • Han, Min-Su (The Graduate School, Division of Marine Engineering, Mokpo Maritime University) ;
  • Jang, Seok-Ki (Division of Marine Engineering, Mokpo Maritime University)
  • 투고 : 2007.10.24
  • 발행 : 2008.06.22
⟨ 이전 논문 다음 논문 ⟩

초록

The magnitude of constraint effect $A_2$ value was experimentally estimated by using crack tip opening displacement(CTOD) between elastic and plastic regions near crack tip front for CT specimen with $25.4t{\ss}{\AE}$ SS400 steel. The constraint effect, $A_2$ was dependent on specimen configuration and on the measured positions of CTOD near crack front. $A_2$ should be estimated using the opening displacement calculated within crack front plastic region. If not, it's not reliable to evaluate of constraint effect at crack growth initiation in this paper.

키워드

참고문헌

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