品質機能展開結合田口方法與灰色理論於多重品質特性之拋光過程最佳化分析

本研究旨在應用品質機能展開結合田口方法與灰色理論於鈦合金拋光製程中落實顧客多重品質特性的要求進行研究。在鈦合金拋光製程中，本研究首先運用品質機能展開法評估顧客需求項目和技術需求項目，其間之關係係輔以問卷調查與先前實驗來決定。經由品質機能展開所評估出的關鍵品質要項，主要利用田口方法之實驗設計，希望藉由直交表和訊號雜音比的分析，尋找最佳的品質要項因子和水準的組合，並透過變異數分析中的信心水準來決定顧客需求項目和技術品質項目間的關係。最後，品質機能展開中技術品質優先順序的決定則以傳統計算方法和灰色理論GM(1,N)模型兩種方法進行分析比較，經由確認實驗的結果，證明灰色理論的分析結果與確認實驗相符，因此，灰色理論GM(1,N)模型相較於傳統計算方法，更適合應用於品質機能展開。關鍵字：品質機能展開、田口方法、灰色理論、拋光

關鍵字

品質機能展開；田口方法；灰色理論；拋光

並列摘要

In this study, quality function deployment (QFD) Taguchi method and grey theory to implement customers multiple quality characteristics in the polishing process of Ti-6Al-4V. In the polishing process of Ti-6Al-4V, this study uses QFD to evaluate customer requirements project and technical requirements project by questionnaire and previous experiments. Through QFD to evaluate the critical quality project, the experimental design using orthogonal array and S/N ratio of Taguchi method to find the optimal combination of the polishing parameter levels, and determine the relationship between customer requirements and technical requirements by confidence level of the analysis of variance (ANOVA). Finally, this study applying the traditional method and GM (1, N) model to analysis the priority of technical requirements. By the results of confirm experiment shows the grey theory’s result consistent with a confirm experiment. Therefore, GM (1, N) model might be more appropriate than the traditional method to apply in the QFD. Keywords：QFD, Taguchi method, Grey theory, polishing