| Summary: | 碩士 === 朝陽科技大學 === 工業工程與管理系 === 104 === For the production equipment requiring no interruption of unexpected downtime, the production line may be slowed and may cause output quantity being reduced, production cycle time being longer, and defective or scrap products being increased if the unexpected downtime are occurred. Thus, the unexpected downtime of production equipment can make a substantial increase in business operating costs. In this research, the equipment unexpected downtime problem of a Liquid Crystal Display Company in Taiwan is used as an example case to study the causes of unexpected downtime and to development the solution strategy. The historical data of equipment were collected to analyze the problem of unexpected downtime. The unexpected downtime is categorized as brief-stop and failure in this study. The methods of case study and QC tools are applied to explore the causes for the brief-stop condition; the statistics methods are applied to analyze the distribution of time between failure, to develop the reliability model, and then to construct the preventive maintenance model for the failure condition. This research can provide equipment managers the methodology and models for solving the downtime problems according to the needs of enterprise.
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