A novel failure time estimation method for degradation analysis based on general nonlinear Wiener processes

Ao Zhang, Zhihua Wang, Rui Bao, Chengrui Liu, Qiong Wu and Shihao Cao

Reliability Engineering and System Safety, 2023, vol. 230, issue C

Abstract: Nonlinear Wiener processes have been widely applied for degradation analysis in practical engineering. To improve the accuracy of failure time distribution approximation itself, a novel analytical approximation of the distribution under the concept of first hitting time (FHT) is constructed through a unique tangent treatment. A series of comprehensive simulation studies are implemented to demonstrate the effectiveness and accuracy improvement of the proposed approximation. Results show that the proposed method can guarantee improved accuracy under various nonlinear regulations and uncertainties. The feasibility and validity of the general deterioration model and reliability analysis methodology are illustrated by a typical real application of metal fatigue crack growth.

Keywords: Nonlinear degradation; Wiener process; Analytical failure time distribution; First hitting time (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:230:y:2023:i:c:s0951832022005282

DOI: 10.1016/j.ress.2022.108913

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