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- "Order Release and Product Mix Coordination in a Complex PCB Manufacturing Line with Batch Processors"
Pankaj Chandra, R. Bhatnagar (Nanyang Technological University, Singapore), Richard Loulou (NcGill University, Montreal, Canada), Jin Qiu (Merrill Lynch). Published in The International Journal of Flexible Manufacturing Systems (1999)
This paper presents a study of role of order releases and product mix coordination in a complex manufacturing line with batch processors. It develops a planning methodology for synchronizing production in such manufacturing lines and discuss the decision-making process in the context of PCB production environment at Northern Telecom's Fibreworld division. The planning methodology includes developing mathematical programming models for determining a configuration of batch processors, order releases to the shop floor, and daily loading decisions at the batch processors. The optimization models are linked to a simulation model of the shop, which provides key statistics like lead time, work in process, and utilization rates. The objective is to reduce lead time for manufacturing different products in this environment while meeting the demand.
Click here to download a copy (size 164 KB).
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This paper contains a production planning model which considers the problem of selecting optimal routes for manufacturing various part types in a Flexible Manufacturing system.
Click here to download a copy (size 101 KB)
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"Variability in Assembly and Competing Systems: Effect on Performance and Recovery"
Pankaj Chandra and R. Bhatnagar (Nanyang Technological University, Singapore(1994)In this paper, authors examine the effect of variability of an assembly system where two stations feed another station and a competing system where two independent stations are fed by a single station. The authors study the impact of variability in processing times, variability due to unreliable workstations, and variability due to imperfect yield. The authors also discuss design features of the two configurations that can be used to recover part of the output lost due to variability.
Click here to download a copy (size 406 KB).
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