ABSTRACT
The degradation analysis method is widely used to the reliability analysis of the products with long life and high reliability. There is a non-competing multi-degenerate situation widely exist in some mechanical products, non-competing relationship multiple degradation model is proposed in this paper to describe it. The degradation process of products which proposed in this paper have two degradation indicators, the gamma process is used to characterize the degradation process. A Bayesian fusion framework of degradation analysis is presented to deal with the small sample size problem of the products and the MCMC method is used to simulate the samples of model parameters. A case-study of the spool valve is discussed to demonstrate the model and method we proposed.
