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Development of Dynamic Photoelastic Experimental Hybrid Method for Propagating Cracks in Orthotropic Material

직교이방성체내의 진전 균열에 대한 동적 광탄성 실험 Hybrid 법 개발

  • 신동철 (영남대학교 기계공학부) ;
  • 황재석 (영남대학교 기계공학부) ;
  • 성종현 (영남대학교 대학원 기계공학부)
  • Published : 2003.08.01

Abstract

In this paper, transparent dynamic photoelastic experimental hybrid method for propagating cracks in orthotropic material was developed. Using transparent dynamic photoelastic experimental hybrid method, we can obtain stress intensity factor and separate the stress components from only isochromatic fringe patterns without using isoclinics. When crack is propagated with constant velocity, the contours of stress components in the vicinity of crack tip in orthotropic material are similar to those of isotropic material or orthotropic material with stationary crack under the static load. Dynamic stress intensity factors are decreased as crack growths. It was certified that the dynamic photoelastic experimental hybrid method was very useful for the analysis of the dynamic fracture mechanics.

Keywords

Hybrid Method;Dynamic Photoelastic Experiment;Propagating Crack;Orthotropic Material;Isochromatics;Non-linear Least Squares Method;Dynamic Stress Intensity Factor

References

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