Performance Analysis of an FMS Operating Under Different Failure Rates and Maintenance Policies |
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Authors: | Mehmet Savsar |
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Affiliation: | (1) Kuwait University, College of Engineering & Petroleum, Industrial & Management Systems Engineering, P.O. Box 5969, Safat, 13060, Kuwait |
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Abstract: | Flexible manufacturing Systems (FMSs) typically operate at 70–80% utilization, which is much higher than the utilization of
traditional machines that can operate with as low as 20% utilization. A result is that an FMS may incur four times more wear
and tear than a traditional system. This requests the execution of effective maintenance plans on FMSs. While maintenance
actions can reduce the effects of breakdowns due to wear-outs, random failures are still unavoidable. It is important to understand
the implications of a given maintenance plan on an FMS before its implementation. This paper discusses a procedure that combines
simulation and analytical models to analyze the effects of corrective, preventive, and opportunistic maintenance policies
on the performance of an FMS. The FMS performance is measured by its operational availability index, which is determined using
the production output rate of the FMS under a variety of time between failure distributions and different operational conditions.
The effects of various maintenance policies on FMS performance are simulated and the results are compared to determine the
best policy for a given system. |
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Keywords: | maintenance reliability FMS failure rates simulation |
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