複合材料因其優異的機械性質而被廣泛運用於各個領域中，如航太業、汽車工業、運動器材等，當複合材料需要進行鑽孔作為元件連接之用時，其加工過程所產生的脫層現象，除了對加工品質有影響外，對複合材料構件的機械性能與壽命也會有所影響，因此如何減少脫層現象成為複合材料鑽孔加工的主要課題。本文介紹的是一種改善複合材料圓管鑽孔脫層的方法。
　　鑽孔平板複合材料時，可在平板下方放置一塊墊塊，稱做背板(Back-up)，來減少複合材料的脫層現象，本文以此為出發點，設計了用於鑽孔圓管複合材料的背撐機構，在圓棒中間放置一弧面頂塊作為支撐，來減少鑽孔時產生的脫層，並提升背撐機構的剛性，期望能減少更多的脫層現象。本實驗試片使用碳纖維管，使用麻花鑽頭進行鑽孔加工，透過使用背撐機構，以及多組進給速率、主軸轉速為變數，得到的實驗結果顯示，使用原先的背撐機構，能在提升兩倍的轉速以及三倍以上的進給速率下，得到與不使用背撐機構的脫層面積相同的結果，提升剛性之後，更可達到減少35％脫層的改善效果，具更好的加工效益。

　　Composite materials have been widely used in aerospace, electrical vehicles and sports goods. The delamination occurs when drilling the composite materials parts for assembly, which leads to serious concerns of reliability and safety. How to reduce delamination is a major issue in drilling composites. This research presents a method of utilizing back-up mechanism which places a supporting block mades of carbon steel in the middle of the tube to reduce the delaminations caused by twist drilling. Increasing stiffness of back-up mechanism can also reduce delamination. The experimental results demonstrate that drilling feed rate can be elevated 300% and spindle rotating speed can be elevated to 200% when maintaining the same level of delamination extent. After Increasing stiffness of back-up mechanism, the delamination extent can be reduced up to 35%.

摘要 I
Abstract II
致謝 III
目錄 IV
圖目錄 VI
表目錄 VIII
第一章 緒論 1
1.1 研究背景 1
1.2 研究動機 8
第二章 文獻回顧 10
2.1 複合材料鑽孔脫層 10
2.2 影響脫層的因素 12
2.3 減少脫層的方法 16
2.4 非傳統加工方法 21
2.5 複合材料破裂能 24
2.6 脫層檢測 26
第三章 實驗器材設計與方法 27
3.1 實驗器材 27
3.1.1 實驗管材 27
3.1.2 鑽頭 28
3.1.3 CNC加工機 28
3.1.4 夾具設計 29
3.1.4.1 脫層位移關係式分析 29
3.1.4.2 圓桿設計 33
3.1.4.3　提升機構剛性 34
3.1.4.4　治具架設 35
3.1.5 動力計 37
3.1.6 超音波檢測與影像處理 38
3.2 參數設定 40
3.3 實驗步驟 41
第四章 實驗結果討論 42
4.1 有無使用背撐機構的比較 42
4.1.1進給速率的影響 42
4.1.2主軸轉速的影響 48
4.1.3 背撐機構對脫層抵制效果評估 51
4.2 提升背撐機構剛性的影響 53
4.3 綜合比較 56
第五章 結論與未來展望 61
參考文獻 63

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