Accelerated life testing for products without sequence effect

Abstract

This paper proposes united accelerated life testing and accelerated degradation testing for a class of products without sequence effect. Comprehensive reliability models for the failure mode and performance degradation under different load conditions for these products were established by the authors (1995). The proposed accelerated testing based on the above models allows both: (a) testing of the hypothesis of the products belonging to the considered class, (b) performing the reliability prediction and life estimation using the observed performance degradation data. Reliability characteristics for normal operating conditions and one-to-one transformation between performance degradation and cumulative distribution of failures independent of the load conditions is obtained from the testing results under more severe conditions.