Abstract:

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 evaluation 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.