Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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The Study on the Quantitative Analysis of Accident Fracture Surface by X-ray Diffraction

X-ray 회절에 의한 사고파면의 정량적 해석에 관한 연구

  • Choi, Seong-Dae (Dept.of Machanical Engineering, Kumoh National Institute of Technology) ;
  • Kweon, Hyun-Kyu (Dept.of Machanical Engineering, Kumoh National Institute of Technology) ;
  • Cheong, Seon-Hwan (Dept.of Machanical Engineering, Kumoh National Institute of Technology)
  • 최성대 (금오공과대학교 기계공학부) ;
  • 권현규 (금오공과대학교 기계공학부) ;
  • 정선환 (금오공과대학교 기계공학부)
  • Published : 2002.04.01
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Abstract

X-ray diffraction observation of fracture surfaces yields useful information to analyze the causes of failure accidents of engineering structures. This experimental technique, named X-ray fractography, has been developed especially in metal and mechanical engineering fields. The distributions of the residual stress and the half value breadth of diffraction profiles beneath the fatigue fracture surface were measured with SNCM 439, HT100 and Ti-6Al-4V alloy. The size of the maximum plastic zone was successfully determined on the basis of the measured distributions. This size was correlated to maximum stress intensity factor. The distributions of the half value breadth of diffraction profiles on the fatigue fracture surfaces were measured with SNCM 439. HT100. The equations of x-ray parameter distribution were possible to estimated fracture parameters of fatigue fracture surfaces.

Keywords

References

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