CONWIP Based Control Of A Semiconductor End Of Line Assembly
Advancement of technology and trends in globalization has resulted in higher customer demands and expectations. Manufacturers now offer mass customization to stay competitive. In the semiconductor industry, where product mix and volume are high, production is further complicated by the different p...
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my.utem.eprints.109012021-07-14T12:56:28Z http://eprints.utem.edu.my/id/eprint/10901/ CONWIP Based Control Of A Semiconductor End Of Line Assembly Chong, Kuan Eng Lim, Ke Sin Advancement of technology and trends in globalization has resulted in higher customer demands and expectations. Manufacturers now offer mass customization to stay competitive. In the semiconductor industry, where product mix and volume are high, production is further complicated by the different process routes and processing times for different product families. Coupled with rapid changeovers of products, it is essential to keep the work in process (WIP) low in order to reduce the inventory level on the shop floor. CONWIP is a production control strategy applicable in many manufacturing environment, that uses cards to control WIP level. In this paper, discrete event simulation models for processes at the End of Line (EOL) assembly in a semiconductor manufacturing company were developed. Experiments were conducted using these models to compare the current system with the single loop and multi loop CONWIP control mechanisms. Performance parameters of throughput, cycle time and WIP level were compared in all experiments. The result, firstly, shows that, generally, CONWIP production control is more effective to reduce WIP level compared to the current system. The reduction in WIP is accompanied by corresponding improvements of cycle times. Secondly, the multiloop system performs better than the single loop system with higher cycle time reduction. Multi loop control is also more robust and provides a better control mechanism compared to the single loop system. Sciencedirect 2013 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/10901/1/PROCEDIA_CONWIP.pdf Chong, Kuan Eng and Lim, Ke Sin (2013) CONWIP Based Control Of A Semiconductor End Of Line Assembly. Procedia Engineering , 53. pp. 607-615. ISSN 1877-7058 http://www.sciencedirect.com/science/article/pii/S1877705813001975# |
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Advancement of technology and trends in globalization has resulted in higher customer demands and expectations. Manufacturers
now offer mass customization to stay competitive. In the semiconductor industry, where product mix and volume are high,
production is further complicated by the different process routes and processing times for different product families. Coupled with
rapid changeovers of products, it is essential to keep the work in process (WIP) low in order to reduce the inventory level on the shop
floor. CONWIP is a production control strategy applicable in many manufacturing environment, that uses cards to control WIP level.
In this paper, discrete event simulation models for processes at the End of Line (EOL) assembly in a semiconductor manufacturing
company were developed. Experiments were conducted using these models to compare the current system with the single loop and
multi loop CONWIP control mechanisms. Performance parameters of throughput, cycle time and WIP level were compared in all
experiments. The result, firstly, shows that, generally, CONWIP production control is more effective to reduce WIP level compared
to the current system. The reduction in WIP is accompanied by corresponding improvements of cycle times. Secondly, the multiloop
system performs better than the single loop system with higher cycle time reduction. Multi loop control is also more robust and
provides a better control mechanism compared to the single loop system. |
format |
Article |
author |
Chong, Kuan Eng Lim, Ke Sin |
spellingShingle |
Chong, Kuan Eng Lim, Ke Sin CONWIP Based Control Of A Semiconductor End Of Line Assembly |
author_facet |
Chong, Kuan Eng Lim, Ke Sin |
author_sort |
Chong, Kuan Eng |
title |
CONWIP Based Control Of A Semiconductor End Of Line Assembly |
title_short |
CONWIP Based Control Of A Semiconductor End Of Line Assembly |
title_full |
CONWIP Based Control Of A Semiconductor End Of Line Assembly |
title_fullStr |
CONWIP Based Control Of A Semiconductor End Of Line Assembly |
title_full_unstemmed |
CONWIP Based Control Of A Semiconductor End Of Line Assembly |
title_sort |
conwip based control of a semiconductor end of line assembly |
publisher |
Sciencedirect |
publishDate |
2013 |
url |
http://eprints.utem.edu.my/id/eprint/10901/1/PROCEDIA_CONWIP.pdf http://eprints.utem.edu.my/id/eprint/10901/ http://www.sciencedirect.com/science/article/pii/S1877705813001975# |
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13.18916 |