Remaining Useful Life Estimation Method for the Turbine Blade of a Civil Aircraft Engine Based on the QAR and Field Failure Data

Abstract

Abstract: Based on the limited information on the civil aircraft engine, a remaining useful life prediction method for the turbine blade based on the quick access recorder(QAR) history data and the field failure data is proposed. The stress and temperature spectrum of the critical location of the turbine blade is extracted from the engine QAR data using the empirical models, the cumulative damage of the blade is estimated through the life consumption model, and further the remaining useful life can be predicted. A simulation case study is carried out to validate the proposed method. Although the method is developed based on the creep damage accumulation, it might be extended to take thermal mechanical fatigue and creep-fatigue interaction into account.

Key words: civil aircraft engine, field failure data, QAR data, remaining useful life, turbine blade

SUN Jianzhong, ZUO Hongfu, LIANG Kun. Remaining Useful Life Estimation Method for the Turbine Blade of a Civil Aircraft Engine Based on the QAR and Field Failure Data[J]. Journal of Mechanical Engineering, 2015, 51(23): 53-59.

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