| Summary: | 碩士 === 元智大學 === 工業工程與管理學系 === 93 === In this paper, a technique for prioritizing corrective actions in failure mode and effects analysis (FMEA) is proposed. This technique extends the risk prioritization beyond the conventional risk priority number (RPN) method. The ranks 1 through 1000 are used to represent the increasing risk of the 1000 .A higher rank of failure is, a higher priority is. Traditionally, FMEA identifies the risk associated with a product failure through assignment of a standard RPN.A fundamental problem with FMEA is that it attempts to quantify risk without adequately quantifying the factors that contribute to risk, so the rank accedes to the weight in the study.
In the problem-solving process, human experts often recall similar cases to help identifying the mechanism involved. This has motivated the use of case-based reasoning to develop a system for failure mechanism in this study. To determine its accuracy, the system is evaluated using historical data. It is thus concluded that case-based reasoning is a viable approach for the identification of failure mechanisms. The numerical results show that the Mean Absolute Percentage Error（MAPE）is 3.64% . We can conclude that case-based reasoning is a viable approach for the mechanisms.
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