研究生: |
邱筠蘋 Yun-ping Chiu |
---|---|
論文名稱: |
灰模糊失效模式與效應分析於LED下游封裝之應用 The Application of FMEA Using Fuzzy and Gray Theory in LED Packaging |
指導教授: |
徐世輝
Shey-Huei Sheu |
口試委員: |
許總欣
Tsung-Shin Hsu 簡郁紘 Yu-hung Chien |
學位類別: |
碩士 Master |
系所名稱: |
管理學院 - 工業管理系 Department of Industrial Management |
論文出版年: | 2009 |
畢業學年度: | 97 |
語文別: | 中文 |
論文頁數: | 57 |
中文關鍵詞: | 失效模式與效應分析 、模糊理論 、灰關聯分析 |
外文關鍵詞: | Failure Mode and Effect Analysis, Fuzzy Theory, Gray relation analysis |
相關次數: | 點閱:397 下載:0 |
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失效模式與效應分析(Failure Mode and Effects Analysis)是一種故障模式與影響解析之手法,經由巨細靡遺地列舉出製程中之潛在失效模式,探討失效模式發生之原因、現象,解析每一失效對製程產生之影響,並應用風險評價方法,將重要性相對地加以量化,提供決策者改善之依據,期望將可能影響之失效模式於早期階段就予以除去。
本研究於傳統失效模式與效應分析中加入模糊理論與灰關聯分析,衍生出改良之FMEA,該方法透過結合模糊理論建立模糊語意評估所對應之模糊數,再經由FMEA小組成員對各失效模式做評估,最後利用灰關聯分析求算出各失效模式之關聯度,來排出風險優先順序並導入於LED封裝製程中。本研究改進了傳統使用風險優先數法受質疑之部分,讓改善決策更客觀公正。
Failure Mode and Effect Analysis is listed out the potential failure modes in the manufacturing process carefully. First, we discuss the failure cause and phenomenon and analyze the influence of each failure on the process. Second, we use the risk assessment methods to quantify the relative importance. Finally, we expect that failure modes can provide an improvement for the decision makers and shift the effect factors in the early stages.
According to the study on the traditional FMEA, this study presents an improved FMEA combined with fuzzy theory and gray relation theory. This method uses the fuzzy theory to set up the fuzzy linguistic term set and the fuzzy number, which is used by FMEA group to evaluate the various failure modes, and finally it uses the gray relation theory to calculate the gray degree of relation between the failure modes to determine the risk priority, which is used in the LED packaging process. This study presents an improved the risk priority number, which can be more objective and fairer.
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