Reliability Demonstration Method for Competing Failure Systems  
Author Hao-Wei Wang


Co-Author(s) Fei Teng


Abstract In order to improve the accuracy of reliability assessment for the system with multiple failure modes, a reliability modeling method based on the s-dependent competing risk of degradation failures and traumatic failures was proposed. A condition space model was applied to evaluate the degradation degree of system by fusing multivariate degradation data, and then Gamma process was utilized to establish the degradation failure model of system. A conditional Weibull distribution was used to establish the traumatic failure model of system. The reliability model based on dependent competing risk was established by assuming that the probability of traumatic failure depends on the degradation degree of system. A case application was provided to validate the effectiveness of proposed method.


Keywords Reliability assessment; competing risk; degradation degree; degradation failure; traumatic failure
    Article #:  21219
Proceedings ISSAT International Conference on Reliability and Quality in Design 2018
August 2-4, 2018 - Toronto, Ontario, Canada