Title of Dissertation: OPTIMAL PREVENTIVE MAINTENANCE POLICIES FOR UNRELIABLE QUEUEING AND PRODUCTION SYSTEMS Xiaodong Yao, Doctor of Philosophy, 2003 Dissertation directed by: Professors Steve I. Marcus and Michael C. Fu Department of Electrical and Computer Engineering Preventive Maintenance (PM) models have traditionally concentrated on utilizing machine “technical” state information such as...

This paper presents a model and analysis of a synchronous tandem flow line that produces two different part types on unreliable machines. The machines operate according to a static priority rule, operating on the highest priority part whenever possible, and operating on lower priority parts only when unable to produce those with higher priorities. We develop a new decomposition method to analyz...

In this paper two similar models for the maintenance of a production-inventory system are considered. In both models, an input generating installation supplies a buffer with a raw material and a production unit pulls the raw material from the buffer. The installation in the first model and the production unit in the second model deteriorate stochastically over time and the problem of their opti...

Cell formation problem mainly address how machines should be grouped and parts be processed in cells. In dynamic environments, product mix and demand change in each period of the planning horizon. Incorporating such assumption in the model increases flexibility of the system to meet customer’s requirements. In this model, to ensure the reliability of the system in presence of unreliable machine...

In the printing industry, where production never stops, it is very important to continuously maintain machine performance. If a breaks down, will stop and disturb process. Therefore, maintenance system must be managed efficiently solve those problems. The paper presents study results on continuous quality improvement of offset using preventive features. Offset process that involves multitude va...

Over the past half-century, Buffer Allocation Problem (BAP) in production lines has remained a topic of continuous interest and research. In this context, BAP refers to determining optimal allocation buffers along line maximize efficiency productivity. This paper presents novel approach address unreliable serial lines. The objective is rate line, which directly influences its overall performanc...

This paper deals with the production and preventive maintenance control problem for a multiple-machine manufacturing system. The objective of such a problem is to find the production and preventive maintenance rates for the machines so as to minimize the total cost of inventory/backlog, repair and preventive maintenance. A twolevel hierarchical control model is presented, and the structure of t...