碩士 / 朝陽科技大學 / 工業工程與管理系 / 106 / This study determines the optimal common cycle time and shipment policy for a multi-item manufacturing system with outsourcing and scrap, and manufacturing run time with breakdown, outsourcing and scrap. Both of the above models assume that under the imperfect production system, the production of defective products occurs during the production stage, and defective products are all classified as scrapped items because either the rework costs are too high or they cannot be repaired. In order to cope with actual production conditions, this study extends the traditional EPQ model and establishes mathematical models for the aforementioned problems.
The following are two mathematical models of this study:
(1) Model one deals with multi-item manufacturing systems considering outsourcing production strategy, it is an alternative for situations like when the demand exceeds the supply, or when defective rate is too high, or aiming to increase production efficiency, etc.. Two delivery policies namely, continuous and multiple issuing policies, are considered in this study. Optimization techniques are used to determine the optimal common cycle time and number of deliveries for the models.
(2) Model two deals with single product manufacturing systems considering outsourcing production strategy and random machine breakdown situation, and under abort/resume (AR) inventory control policy. Integration and search algorithm are used to solve the optimal production uptime for this model.
Finally, numerical examples with sensitivity analyses are given to demonstrate practical usages of our obtained result.
| Identifer | oai:union.ndltd.org:TW/106CYUT0031009 |
| Date | January 2018 |
| Creators | Jhan, Jia-Hang, 湛家杭 |
| Contributors | Chiu, Yuan-Shyi, 邱元錫 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 119 |
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