Physics-of-Failure Based Approach for Predicting Reliability of Mechanical Products

In this paper, the reliability prediction approaches and flowchart based on PoF(Physics-of-Failure) of mechanical structure and system under multi-mechanism are discussed. Nowadays, the structure and load condition of mechanical products become more and more complicated, and the failure mode becomes more difficult to identify. It is necessary to use PoF method to build model and analysis failure problem. In the method, the effect of factors and interaction between different failure modes are considered, the stochastic PoF model was used to simulate and analysis reliability, predict the occurrence probability of the failure, and the correlation between two failure modes is given, the reliability index and the lifetime etc. are given also.