Multi-objective Process Optimization of CO2 Laser + MIG Arc Hybrid Welding Aluminum Alloy 6061

[[abstract]]摘 要 雷射(LASER)一詞是取自英文Light Amplification by Stimulated Emission of Radiation 的頭一字母所成，意義是「光激發放射增幅器」，所以雷射又稱為激光。 二氧化碳雷射是目前連續輸出功率較高的一種雷射，加上它發展較早(1964 年)，商 業成品比較成熟，所以早就被廣泛應用到材料加工、醫療使用、軍事武器、環境 量測等各個領域。雷射結合MIG 電弧銲接是一種非常具有發展潛力的加工技術， 在國外早已有許多的研究發展；研究顯示混合銲接製程具有加大溶融滲透率、提 高銲接速度、穩定電弧、減少銲道內部氣孔的生成與熱鈞裂…等優點。 本文利用田口法、反應曲面法、模糊邏輯來探討多目標最佳化製程技術開發。 此方法之內涵在於利用田口穩健設計中直交表，以最少實驗次數達到最佳品質設 計，並結合反應曲面分析，觀察顯著因子所建構之曲面變化；搭配模糊邏輯於問 題特性掌握程度，將多重品質特性轉換為單一衡量指標，藉由因子分析及變異數 分析，進一步找出最佳化參數組合，並以實驗結果證明本研究能於多重品質中， 提供一組最佳的參數組合。[[abstract]]ABSTRACT Laser which stands for Light Amplific Ation by stimul Ated Emis Sionof Radation abstracts from the 1st letter of its definition. Hence, Laser is also defined as stimulating light. Until now, carbon dioxide laser is the highest output power consumption laser as well as it were developed in early 1964 A.D. It is applied comprehensively in several areas, such as material tooling, medical application, military weapon, and environment verification. The technique of MIG conjunction with Laser is potentially a kind of developing tooling technique, and published in papers in most of western countries. On some papers illustrated, the production procedure of MIG conjunction with Laser has advantages of increases of the penetration rate of soldering scale, soldering speed, stability of MIG, and avoidance of leakage and gas hole within soldering tube…etc. This research paper is focused on discussion of development of multiple quality iii characteristics optimisation in production procedure with use of Taguchi Method, fuzzy logic. The characteristics of this method are using Orthogonal Arrays (OAs) in order to decrease the experiment and obtain best quality in design. Further, this method also includes the characteristics of vague logics within questions transferring multiple quality characteristics into single measuring index. With use of factor analysis and variable number analysis, a best combination of index can be found out and linked to the design of reflective surface. Then, the change of surface which is constructed by tangible factor will be observed. It can be further to tell from the optimised point of index