Two journal papers are published in this area. Continuous state reliability analysis Continuous state reliability models are developed to handle continuous product performance degradation. However, the current methods suffer from mathematical complexity. In our research, based on independent increment random process or normal random process, we developed a workable continuous state reliability analysis method. Our approach can analyze both catastrophic failure and performance degradation simultaneously.
Regression analysis is used to estimate degradation parameters.
State tree method is developed to conduct system analysis. Analysis of variance method is used to assess the criticality of product parameters to performance degradation. One paper is accepted in the prestigious IEEE Annual Reliability and Maintainability Symposium. This project links multistate reliability to robust design. One Ph.D. dissertation has been produced as a result of this research.