| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for diagnosing the life of a component, which can diagnose the life of a component highly precisely in accordance with a degree of creep damage estimated probabilistically and a degree of thermal fatigue damage estimated probabilistically, and which can quickly diagnose the life of a component that is exposed to high temperatures. SOLUTION: Approximation of a degree of creep damage is performed for each component according to a relational expression including a Larson-Miller parameter. According to an approximate expression obtained by determining a constant for each component, a degree of creep damage of that component is determined. By performing a Weibull statistics analysis on this degree of creep damage, a degree of creep damage is probabilistically estimated. Further, by performing a Weibull statistics analysis on a degree of thermal fatigue damage calculated according to an approximate expression for approximation of a degree of thermal fatigue damage, a degree of thermal fatigue damage is probabilistically estimated in a similar manner. COPYRIGHT: (C)2008,JPO&INPIT |
