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Maintenance Optimization for Asset Systems With Dependent Performance Degradation

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2 Author(s)
Nipat Rasmekomen ; Institute for Manufacturing, Engineering Department, University of Cambridge, Cambridge, United Kingdom ; Ajith Kumar Parlikad

This paper presents a model for optimizing maintenance plans for an industrial system consisting of a number of assets with degradation and performance interaction between them. In particular, we consider an asset system with M identical non-critical machines feeding their output to a critical machine. A common repair team performs maintenance on all the machines. All the machines deteriorate over time stochastically independently. In addition to the stochastically independent degradation, the degradation of the non-critical machines also affects the performance of the critical machine. We develop a mathematical model to represent these interactions and performance of the asset system. We also provide a simulation-based numerical solution to optimize the maintenance plan for the system outlining the maintenance intervals for each of the machines.

Published in:

IEEE Transactions on Reliability  (Volume:62 ,  Issue: 2 )