A series production system consisting of multiple processes and facility was studied considering degradation process as a random process in line with Gamma distribution. Opportunistic maintenance was introduced when preventive maintenance (PM) was conducted to reduce system downtime. Maintenance time was regarded as a function of degradation degree and maintenance times. A degradation degree recovery factor was used to describe the evolution process of facility degradation degree before and after maintenance. Considering the generalized time value, cost function of facility and system model was established according to the decision of maintenance and replacement based on cost-effectiveness and availability. The numerical example optimized the maintenance thresholds and calculated the replacement time and PM times of each facility. The results show that the generalized time value can accelerate the aging of facility, shorten service life, and provide a new idea for enterprise to make maintenance and replacement policy.
DU Yu，LI Yuqing，ZHANG Xiufang，PAN Ershun
. Preventive Maintenance and Replacement Policy for Series Deteriorating
Production System Considering Generalized Time Value[J]. Journal of Shanghai Jiaotong University, 2020
, 54(5)
: 465
-472
.
DOI: 10.16183/j.cnki.jsjtu.2020.05.003
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