Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on the X-Ray Fractography of Turbine Blade under Fatigue Load

피로하중을 받는 터빈 블레이드의 X선 프랙토그래픽에 관한 연구

  • 홍순혁 (동아대학교 대학원 기계공학과) ;
  • 이동우 (동아대학교 대학원 기계공학과) ;
  • 조석수 (삼척대학교 기계.정밀기계.자동차공학부) ;
  • 주원식 (동아대학교 기계.산업 시스템공학부)
  • Published : 2002.02.01
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Abstract

Turbine blade is subject to cyclic bending force by steam pressure. Stress analysis by fractography is already established technology as means far seeking cause of fracture and has been widely employed. In the X-ray frctography, plastic deformation and residual stress near the fracture surface can be determined and information of internal structure of material can be obtained. Therefore, to find a fracture mechanism of torsion-mounted blade in nuclear power plant, based on the information from the fracture surface obtained by fatigue test, the correlation of X-ray parameter and fracture mechanics parameter was determined and then the stress intensity factor to actual broken turbine blade was predicted.

Keywords

References

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