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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 45930 (01)
- University: Sharif University of Technology
- Department: Industrial Engineering
- Advisor(s): Eshraghniaye Jahromi, Abdolhamid
- Abstract:
- In the last few decades due to technological progress and more attention to cost reduction of production, production systems have become more automated than before. By increasing the role of machines in manufacturing systems maintenance systems have become more important. One of the factors that influence the complexity of maintenance problem in real world is the interdependency of components in a system. Interacting cooperation between these components intensifies the complexity of the problem’s modeling as well as its optimizing. This complexity result in few studies that have been performed in this field. Thus these works can be broken into two main subjects. In the first case a system has studied with deteriorating components and definitive rate of deterioration. In this kind of systems the amount of deterioration of each component has affected rate of deterioration of the other components and the only available data from the system is the replacement time of components in the past. In this study, We used a Simulation-Optimization method for estimating the rate of deterioration and then constructing the model based on dynamic programming to obtain optimal solution. The second category has concentrated on the effects of correlation between deterioration of components on optimal policy. In this case, not only the dynamic programming is used to model the problem and obtain the optimal policy, but also a sensitivity analysis is designed to identify the effect of various parameters
- Keywords:
- Solidarity ; Multicomponent Systems ; Deteriorating Systems ; Failure Dependency ; Interdependency
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