臺灣博碩士論文加值系統

本研究探討應用熔射覆膜技術於摩阻型接合以提升滑移係數，並確認含塗層摩阻型接合是否符合規範潛變之要求。實驗分為滑移實驗及拉伸潛變實驗兩階段，滑移實驗探討熔射覆膜材料及覆膜厚度對滑移係數的影響；拉伸潛變實驗根據不同滑移係數施加載重，記錄1000小時長期載重下熔射覆膜的潛變所致的滑移量。試體由兩片熔射覆膜連接板搭配僅噴砂母板，以單顆高強度螺栓F10T進行摩阻型接合。滑移實驗結果顯示，使用純鋁及鋁鎂熔射，滑移係數皆可達到0.82至0.94，平均為0.88，為規範噴砂後進行B級塗裝之滑移係數0.50的1.6倍以上。覆膜厚度對滑移係數無顯著影響，但隨著覆膜厚度的增加會造成螺栓預力損失的提高。拉伸潛變實驗結果顯示，熔射覆膜的潛變行為於實驗首100小時對摩阻型接合影響最為顯著，約佔總滑移量80%。純鋁及鋁鎂熔射材料搭配 150 µm覆膜厚度，以滑移係數0.60之設計載重下，通過拉伸潛變實驗並符合規範潛變之要求。本研究以鋁合金熔射覆膜應用於摩阻型接合，可提升滑移係數增加接合強度並應用於工程實務中。

This research explore the application of thermal sprayed coating to slip-critical joints to increase the slip coefficient and confirm the slip-critical joints with coating satisfying the creep requirements. The experiment consisted of two sequence tests of slip test and tension creep test. The slip test used to investigate the influence of the coating material and coating thickness on the slip coefficient. The tension creep test was conducted by applied the load calculated based on the slip coefficient, and recorded the slip due to the creep of the coating under a long-term load of 1000 hours. The specimens comprised two splice plates with thermal sprayed coating and a main blasted plate, jointed by a high-strength bolt F10T. The slip test results showed that using pure aluminum or aluminum-magnesium alloy sprayed coating, the slip coefficients could reach 0.82 to 0.94, with an average of 0.88 that was 1.6 times or more than the specified slip coefficient of 0.50 for Class B coating on blast-cleaned steel. The thickness of the coating had no significant effect on the slip coefficient, but as the thickness of the coating increased, the bolt pretension loss increased. The test results of the tension creep test showed that significant creep behavior was observed during the first 100 hours of the test, and the slip during this period was about 80% of the total slip. Specimens with thermal sprayed either pure aluminum or aluminum-magnesium alloy with 150 μm coating thickness, under the design load calculated by a slip coefficient of 0.60, can meet the requirements of the tension creep test. In this research, the application of the thermal sprayed aluminum alloy to the slip-critical joint can increase the slip coefficient and enhance the connection resistance that can be used in engineering practice.

摘要 i
ABSTRACT iii
誌謝 v
目錄 vi
表目錄 x
圖目錄 xii
符號表 xvi
第一章 緒論 1
1.1 研究背景 1
1.2 研究目的 7
1.3 研究方法 7
1.4 論文構架 8
第二章 規範與文獻回顧 9
2.1 前言 9
2.2 RCSC滑移實驗 9
2.2.1 RCSC滑移實驗試體 9
2.2.2 RCSC滑移實驗設置 10
2.2.3 RCSC滑移載重定義 11
2.2.4 RCSC滑移係數 11
2.3 RCSC拉伸潛變實驗 12
2.3.1 RCSC拉伸潛變試體 12
2.3.2 RCSC拉伸潛變實驗設置 13
2.3.3 滑移量判定標準 14
2.4 EN 1090-2 滑移實驗及拉伸潛變實驗法 15
2.4.1 EN 1090-2 試體規劃與實驗設置 15
2.4.2 EN 1090-2 滑移係數定義 16
2.4.3 額外潛變試驗程序與評估 17
2.5 文獻回顧 18
第三章 滑移實驗計畫 29
3.1 前言 29
3.2 實驗參數規劃 29
3.3 實驗試體設計 31
3.4 滑移係數計算 33
3.5 熔射覆膜塗層厚度量測 34
3.6 實驗設備與設置 35
3.6.1 加載系統 35
3.6.2 螺栓預拉力施加與量測 36
3.6.3 鋼板滑移量量測 40
3.6.4 資料擷取系統 41
3.6.5 整體實驗設置 41
3.7 實驗程序 42
第四章 滑移實驗結果與討論 44
4.1 滑移實驗膜厚量測結果 44
4.2 試體行為 45
4.2.1 試體Blast-cleaned-R系列 46
4.2.2 試體Al-R系列 47
4.2.3 試體Al-Mg-R系列 50
4.3 滑移實驗結果比較與討論 52
4.3.1 熔射材料及覆膜厚度與滑移係數之關係 53
4.3.2 熔射覆膜及覆膜厚度與螺栓預拉力損失之關係 55
4.3.3 接合面鏽蝕對滑移係數之影響 56
4.3.4 接合面鏽蝕對螺栓預拉力損失之影響 58
第五章 拉伸潛變實驗計畫 61
5.1 前言 61
5.2 拉伸潛變實驗試體參數規劃 61
5.3 拉伸潛變實驗試體設計 63
5.4 拉伸潛變實驗設置 65
5.4.1 實驗構架 65
5.4.2 加載及載重量測系統 68
5.4.3 鋼板滑移量量測系統 69
5.4.4 資料擷取系統 70
5.4.5 實驗整體設置 71
5.5 實驗程序 73
第六章 拉伸潛變實驗結果與討論 76
6.1 潛變實驗膜厚量測結果 76
6.2 拉伸潛變實驗試體滑移係數測定 77
6.3 試體行為 78
6.3.1 試體Blast-0.50 79
6.3.2 試體Al-Mg-150-0.50 84
6.3.3 試體Al-Mg-150-0.60 90
6.3.4 試體Al-150-0.60 95
6.4 拉伸潛變實驗結果比較與討論 101
6.4.1 不同表面處理與潛變滑移量之關係 101
6.4.2 滑移係數與潛變行為之關係 103
6.4.3 接合面鏽蝕於潛變行為之影響 105
6.4.4 熔射覆膜厚度於潛變實驗前後的變化 107
6.4.5 螺栓預拉力損失與時間之關係 112
第七章 結論與建議 116
7.1 結論 116
7.2 建議 117
參考文獻 118

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