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An Experimental Study on the Fatigue Crack Propagation Behavior in CTS Specimen under Mode II Loading

모드 II 하중을 받는 CTS 시험편의 피로균열 전파거동에 관한 실험적 연구

  • 송삼홍 (고려대학교 기계공학과) ;
  • 이정무 (고려대학교 대학원 기계공학과)
  • Published : 2003.07.01

Abstract

The purpose of this paper is to investigate fatigue crack behavior under shear(Mode II) loading. Various specimens and devices have been used in order to produce Mode II loading in fatigue experiments for shear crack propagation. But, there is not sufficient comparisons of experimental results between Mode II and others loading modes, because of characteristics of applied loads and specimens. So, compact tension shear(CTS) specimens were used in this paper to investigate the propagation behavior of Mode II by comparing the experimental results between loading modes. We firstly observed the characteristics which was showed in Mode II experiment using CTS specimens. The experimental results under Mode II loading were compared with fatigue crack behavior under Mode I and Mixed-mode I+II loading. The characteristics for initiation and propagation behavior under Mode II loading was investigated by such comparisons.

Keywords

Mode II;Compact Tension Shear Specimen;Shear Load;Crack Propagation Angle;Crack Propagation Path;Maximum Tangential Stress Criterion

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