Article ID: | iaor20041569 |
Country: | United Kingdom |
Volume: | 5 |
Issue: | 3 |
Start Page Number: | 247 |
End Page Number: | 262 |
Publication Date: | May 2002 |
Journal: | Journal of Scheduling |
Authors: | Fowler John W., Carlyle W. Matthew, Mason Scott J. |
Keywords: | production |
Increases in the demand for integrated circuits have highlighted the importance of meeting customer quality and on-time delivery expectations in the semiconductor industry. A modified shifting bottleneck heuristic is developed for minimizing the total weighted tardiness in a semiconductor wafer fabrication facility. This ‘complex’ job shop is characterized by re-entrant or re-circulating product flow through a number of different tool groups (one or more machines operating in parallel). These tool groups typically contain batching machines, as well as machines that are subject to sequence-dependent setups. The disjunctive graph of the complex job shop is presented, along with a description of the proposed heuristic. Preliminary results indicate the heuristic's potential for promoting on-time deliveries by semiconductor manufacturers for their customers' orders.