CAJ | 학술논문

性能退化产品的可靠性通常可以通过性能指标值来反映，而性能指标的退化机理常常可以利用冲击理论进行解释。本文在一定假设下，针对性能退化产品，建立了基于冲击理论的产品性能退化模型，提出了将性能退化模型预测与产品寿命分布拟合相结合的可靠性评估方法，即使用极大似然估计对产品性能退化模型参数进行估计，利用性能退化模型预测拟合产品的寿命分布来评估产品的可靠度。最后，通过实例比较，验证了本方法的可行性和有效性。
성능퇴화산품적가고성통상가이통과성능지표치래반영，이성능지표적퇴화궤리상상가이이용충격이론진행해석。본문재일정가설하，침대성능퇴화산품，건립료기우충격이론적산품성능퇴화모형，제출료장성능퇴화모형예측여산품수명분포의합상결합적가고성평고방법，즉사용겁대사연고계대산품성능퇴화모형삼수진행고계，이용성능퇴화모형예측의합산품적수명분포래평고산품적가고도。최후，통과실례비교，험증료본방법적가행성화유효성。
The reliability of degradation products is usually reflected by the values of parameters.Always the impact theory can be used to explain the mechanism of the parameters.In a certain hypothesis,the model of capability degradation of degradation products is set up based on the impact theory.Then,the reliability evalua-tion method which combines the prediction through the model and the life variable distribution of products is presented,that is,using the maximum likelihood estimation to evaluate the parameters and achieve the result reliability assessment.Finally,an example is given to compare different methods.The result demonstrates that the proposed method is feasible and effective.