Reliability Analysis for Multi-Phase Wiener Processes Considering Phase- Varying Nonlinearity

• Main Authors: Zhihua Wang, Ao Zhang, Chengrui Liu, Qiong Wu
• Format: Article
• Language: English
• Published: IEEE 2020-01-01
• Series: IEEE Access
• Subjects: Multi-phase degradation; phase-varying nonlinearity; reliability evaluation; unit specific property
• Online Access: https://ieeexplore.ieee.org/document/9293270/

Degradation reliability analysis incorporating two-phase or even multi-phase features has become a research focus in recent years. Motivated by the fact that a practical multi-phase degradation procedure may probably involve both linear phases and nonlinear phases, a multi-phase degradation model is constructed that can consider the phase-varying nonlinear property. The unit-to-unit variability is incorporated. Meanwhile, the reliability function based on the first passage time (FPT) conception is derived, where the solution for the two-phase situation is first obtained, and the one for the multi-phase circumstance is constructed via a reclusive scheme. To verify the reasonability of the proposed reliability function, a simulation study has been complemented. Then two real applications are given to demonstrate the validity and the effectiveness of the proposed method.