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Plastic η Eactors for J-Integral Testing of Double-Edge Cracked Tension(DE(T)) Plates

양측균열인장(DE(T)) 평판의 J-적분 시험을 위한 소성 η계수

  • 손범구 (성균관대학교 기계공학부) ;
  • 심도준 (성균관대학교 기계공학부) ;
  • 김윤재 (성균관대학교 기계공학부) ;
  • 김영진 (성균관대학교 기계공학부)
  • Published : 2004.03.01

Abstract

Detailed two-dimensional and three-dimensional finite element (FE) analyses of double-edge cracked tension (DE(T)) specimens are carried out to investigate the effect of the relative crack length and the thickness on experimental J testing schemes. Finite element analyses involve systematic variations of relevant parameters, such as the relative crack depth and plate width-to-thickness ratio. Furthermore, the strain hardening index of material is systematically varied, including perfectly plastic (non-hardening) cases. Based on FE results, a robust experimental J estimation scheme is proposed.

Keywords

DE(T) Specimen;Plastic $\eta$ Factor;Toughness Testing;J-Integral

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