Creep Life Prediction of Aircraft Gas Turbine material by ISM

J. Ocean Eng. Technol. 2001;15(3):43-48.

ISM에 의한 항공기용 가스터빈 재료의 크리프 수명예측

공유식

부경대학교 기계공학부

Keywords: Creep life prediction, Initial strain method, Larson-Miller parameter

핵심용어: 크리프 수명예측, 초기연신률법, 라손-밀러 파라미터

Abstract

In this paper, the real-time prediction of high temperature creep strength and creep for nickel-based superalloy Udimet 720 (high-temperature and high-pressure gas turbine engine materials) was performed on round-bar type specimens under pure load at the temperatures of 538, 649 and 704$^{circ}C$. The predictive equation of ISM creep has better reliability than that of LMP and LMP-ISM, and its reliability is getting better for long time creep prediction ($10^3~10^5$h).