Volume 33, Issue 2 (IJIEPR 2022)                   IJIEPR 2022, 33(2): 1-11 | Back to browse issues page

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Piroozbakht M, Raissi S, Rafei M, Bamdad S. Remaining Useful Life Estimation In the Presence of Given Shocks. IJIEPR 2022; 33 (2) :1-11
URL: http://ijiepr.iust.ac.ir/article-1-1403-en.html
Remaining Useful Life Estimation In the Presence of Given Shocks
Mehrnaz Piroozbakht1 , Sedigh Raissi 2, Meysam Rafei3 , Shahrooz Bamdad1
1- Department of Industrial Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran
2- Department of Industrial Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran , Raissi@azad.ac.ir
3- Department of Economics, Kharazmi University, Tehran, Iran
Abstract:   (1965 Views)
In a system, prediction of remaining useful lifetime (RUL) of servicing before reaching to a specified breakdown threshold is a very important practical issue, and research in this field is still regarded as an appreciated research gap. Operational environment of an equipment is not constant and changes regarding to stresses and shocks. These random environmental factors accelerate system deterioration by affecting on the level or rate of degradation path. The present study focuses on providing a practical operational guideline to estimate the RUL of a system with general degradation path after receiving a shock which only affects on the degradation level. Due to exact estimation of the shock arrival times and measuring the magnitudes of future shocks to investigate shock effects on RUL is almost impossible in the real world and laborious in practice, in this research a new procedure based on total defect size monitored in the constant inspection periods and Accelerated Factor (AF) is proposed to analyze RUL of the system. A Micro-Electro-Mechanical system (MEMS) is used as an example and the results show the applicability of the proposed approach.
Keywords: Remaining Useful Life, degradation process, general path, accelerated degradation, random shock, accelerated factor.
Full-Text [PDF 939 kb]   (897 Downloads)    
Type of Study: Research | Subject: Reliability and Maintenance
Received: 2021/12/31 | Accepted: 2022/04/5 | Published: 2022/06/30
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