Multi-objective Process Optimization of Friction Stir Welding Aluminum Alloy 6063 T5

[[abstract]]摘要 鋁合金因質輕產量豐、強度佳及不易腐蝕生鏽，被廣泛運用在民生、工業、運輸、軍事諸多領域。而摩擦攪拌銲接(Friction stir welding,FSW)為近十餘年所發展的新穎銲接技術，尤其應用在鋁合金上。因鋁合金的熔點不高，經由摩擦攪拌成為固態塑性流動的銲接可獲得良好的品質特性。在日趨重視節能減碳時代，摩擦攪拌銲接技術得以兼顧品質與環保的需求。 本研究結合田口法、主成份分析、模糊理論等來探討開發摩擦攪拌6063 T5鋁合金銲接製程技術，進一步瞭解其製程參數對產品品質特性的關聯性。來設計具有能同時滿足多重目標的品質特性，以獲得控制因子之最佳參數組合俾能對摩擦攪拌銲接6063 T5鋁合金銲接多目標製程最佳化技術開發有所貢獻。 。 關鍵字：摩擦攪拌銲接、田口方法、主成份分析法[[abstract]]ABSTRACT The aluminium alloy is not only light and abundant but also anticorrosive and antirust. It is widely used in the people's livelihood, industry, transportation, military fields and so on. Friction Stir Welding is the novel technology and developed for more than nearly ten years. Especially is applied to the aluminium alloy. Because the melting point of the aluminium alloy is not high, and can obtain the good quality’s characteristic via friction stir welding. In times of paying more attention to energy-conservation and reduceing carbon day by day, friction stir welding technology can meet the demand of quality and environmental protection. This study of friction stir welding aluminium alloy 6063 T5 discusses production technolog development through Taguchi’s method, Principle Component Analysis and Fuzzy Theory. It further realizes production parameter for the relevance of products quality characteristic. It is to design the best parameter set of control factors in order to obtain the better quality characteristic that can meet the multi-objective at the same time. It can help benefit a lot from the development of multi-objective process optimization of the friction stir welding 6063 T5 aluminium alloy. Keywords：Friction stir welding, Taguchi’s method, Principle component analysis