Journal of the Korean Society for Aviation and Aeronautics (한국항공운항학회지)

The Korean Society for Aviation and Aeronautics (한국항공운항학회)
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Damage Analysis of Turbopump Turbine considering Creep-Fatigue effects

크리프-피로 영향을 고려한 터보펌프 터빈의 손상해석

  • 이무형 (한국항공대학교 항공우주 및 기계공학과) ;
  • 장병욱 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김진한 (한국항공우주연구원) ;
  • 정은환 (한국항공우주연구원) ;
  • 전성민 (한국항공우주연구원) ;
  • 이수용 (한국항공우주연구원) ;
  • 박정선 (한국항공대학교 항공우주 및 기계공학부)
  • Received : 2009.12.15
  • Accepted : 2010.03.19
  • Published : 2010.03.31
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Abstract

Structures under high temperature may have creep behavior and fatigue behavior. Durability study of the structures need the damage analysis with the creep-fatigue effects. In this paper, the damage analysis is studied for a turbine blade in the turbopump for a liquid rocket engine which is operated under high temperature condition. First of all, the load cycle is required for defining the operational characteristics of turbopump. The thermal stress analysis is done for a turbine blade of the turbopump. The stress analysis results are used to judge damage due to the creep and the fatigue. The strain-life method with miner rule is used for fatigue damage analysis. The Larson-Miller parameter master curve and robinson rule are used for the creep damage analysis. The linear damage summation method is used to consider creep-fatigue effects of turbopump turbine. Finally, the analysis results for fatigue and the influence are compared to figure out the damage phenomenon of the turbopump turbine.

Keywords

References

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