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Cellular manufacturing systems design with routing flexibility, machine procurement, production planning and dynamic system reconfiguration

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This paper investigates the problem of designing cellular manufacturing systems with multi-period production planning, dynamic system reconfiguration, operation sequence, duplicate machines, machine capacity and machine procurement. An important aspect of this problem is the introduction of routing flexibility in the system by the formation of alternate contingency process routings in addition to alternate main process routings for all part types. Contingency routings serve as backups so as to effectively address the reality of part process routing disruptions (in the main routings) owing to machine breakdowns and allow the cellular manufacturing system to operate in a continuous manner even in the event of such breakdowns. The paper also provides in-depth discussions on the trade-off between the increased flexibility obtained versus the additional cost to be incurred through the formation of contingency routings for all parts. Some sensitivity analysis is also performed on some of the model parameters. The problem is modelled and solved through a comprehensive mixed integer programming formulation. Computational results presented by solving some numerical examples show that the routing and process flexibilities can be incorporated within the cellular manufacturing system design without significant increase in the system cost.
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Keywords: cellular manufacturing systems design; integer programming; routing flexibility

Document Type: Research Article

Affiliations: 1: Department of Mechanical and Industrial Engineering, Concordia University, West Montreal (Quebec), Canada 2: School of Management, University of Southampton, Southampton, United Kingdom

Publication date: 01 January 2009

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