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Damage Analysis of Turbopump Turbine considering Creep-Fatigue effects  

Lee, Mu-Hyoung (한국항공대학교 항공우주 및 기계공학과)
Jang, Byung-Wook (한국항공대학교 항공우주 및 기계공학과)
Kim, Jin-Han (한국항공우주연구원)
Jeong, Eun-Hwan (한국항공우주연구원)
Jeon, Seong-Min (한국항공우주연구원)
Lee, Soo-Yong (한국항공우주연구원)
Park, Jung-Sun (한국항공대학교 항공우주 및 기계공학부)
Publication Information
Journal of the Korean Society for Aviation and Aeronautics / v.18, no.1, 2010 , pp. 1-10 More about this Journal
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
Turbopump; Turbine; Creep; Low-cycle Fatigue; Strain-life Method; Larson-Miller parameter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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