Reliability Improvement of Oil Seal by Variation Component Chart and MCEGR Model

結合主成份變異圖與灰色多屬性決策模式改善油封元件可靠度

徐怡(Yi Hsu) ； 王春和(Chun-Ho Wang)

《品質學報》 15卷2期 (2008/04) Pp. 131-141

摘要

隨著全球經濟快速地成長，顧客對於產品品質的需求亦隨之提昇，因此產品品質好壞已經不再侷限於靜態特性的品質就能滿足顧客需求，顧客更在意的是產品在長期使用下仍能夠維持其正常的功能，也就是產品的可靠度要愈高愈好，因此對生產廠商而言，如何開發出具高可靠度的產品就成爲提昇產品市場競爭力的關鍵因素。油封是廣泛用於引擎中的元件，主要的功能是浸泡在高溫與不同的油料下長期使用，仍能夠防止機構漏油，本研究針對油封元件進行線外品管之參數研究，利用直交表規劃參數設計的實驗，考量油封元件具多個物理特性需同時最佳化，以提昇其最終產品可靠度的前提下，結合主成份變異圖與灰色多屬性決策模式，來最佳化油封元件的物理特性，從而提昇油封元件的可靠度。本研究以一個實際案例的成果來說明所提出改善方法的有效性。

關鍵字

油封 ； 最佳化 ； 主成份分析 ； 灰關聯分析 ； 多屬性決策分析

並列摘要

Customer requirements regarding product quality tends to increase in light of the rapid global economic growth. The ability of product quality to satisfy customer requests is no longer merely restricted on static properties, but also includes dynamic properties. Consumers normally expect that any product they own will be usable and maintain functional performance as long time as possible. This functional performance exactly reflects product reliability, which is a function of time. Products reliability is therefore a critical factor for enhancing manufacturer competitiveness. This study strives to improve reliability of oil seal for use in engines by the variation component chart and multiple criteria evaluation of grey relation (MCEGR) model. A real case study demonstrates the effectiveness of this study.

並列關鍵字

oil seal ； optimization ； principal component analysis ； grey relational ； analysis multiple criteria decision making

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