Abstract:

This paper aims to develop a method of reliability modeling for a two-stage degraded system, facilitating the decision-making on the system maintenance. Cumulative damage model is used to present the degradation process with changing degradation rates. In the cumulative damage model, shock damage value and shock counting are assumed to be Gamma distribution and homogeneous Poisson process, respectively. Reliability and mean remaining useful life are modeled and analyzed. A numerical example is given to show the performance of the proposed models.