臺灣博碩士論文加值系統

在工業界中有越來越多的接合案例使用黏著劑接合方法，而蜂巢板就是一恰當實例，具有高強度、質輕、低成本之優點。但由於其黏著劑屬於高分子聚合物，在對於不同溫濕度環境下黏著劑之機械性質相當敏感，因此本研究針對含有一鋁蜂巢結構與上下面板之鋁合金蜂巢板，利用四點彎矩進行靜態及疲勞強度實驗。實驗部分考量從低溫至高溫高濕之七個不同溫濕度環境，以藉此可幫助瞭解溫濕度效應對鋁合金蜂巢板強度之影響。
本研究首先針對不同溫濕度下進行靜態彎矩實驗，藉此觀察其靜態實驗之結果與破壞模式。結果顯示當溫度越低時，蜂巢板之靜態彎矩強度越高，其破壞模式為面板凹陷；隨著溫濕度上升強度則隨之下降，破壞模式也從面板凹陷轉換成面板與蜂巢結構間之介面脫膠破壞。在疲勞實驗部分，將設定每一個溫濕度環境下之五個適當負荷階進行試驗，負荷階之大小分別設定為靜態極限強度之85％、80％、75％、70％、65％、60％、55％、50％、45％、40％、35％、30％及25％，透過疲勞實驗可得到不同溫濕度之負荷-壽命曲線與破壞模式。其結果顯示溫度越低時，疲勞強度越高；隨著溫濕度上升強度則隨之下降。破壞模式部分則皆為面板與蜂巢結構間之介面脫膠破壞。

To understand the effect of temperature/humidity on the bending strength of aluminum honeycomb sandwich panels, the static and cyclic bending strength of the aluminum honeycomb sandwich panels under various environmental conditions will be experimentally analyzed in this study. According to the response of industrial users, the major cause of the fatigue failure of aluminum honeycomb panels is the adhesive debonding between the panel and the cell core. Furthermore, the local hot-wet environment will reduce the fatigue strength apparently. A systemic analysis on the relation between the temperature/humidity and the strength of the honeycomb sandwich panels is necessary urgently.
In the study, the static and fatigue strengths of the aluminum honeycomb sandwich panels are evaluated experimentally under 7 controlled temperature/humidity conditions. In general, the experimental results show that the static/fatigue strength under low temperature environments is slightly higher to that at room temperature. Moreover, the static/fatigue strength of the honeycomb sandwich panels decreases significantly under high temperature environments compared with that at room temperature and the humidity is found to have moderate effect on the static/fatigue strength of the honeycomb sandwich panels.

中文摘要 I
英文摘要 II
誌 謝 III
目 錄 IV
表目錄 VI
圖目錄 VII
符號說明 X
第一章 序論 1
1-1 引言 1
1-2 研究內容 3
1-3 章節概要 3
第二章 文獻回顧 4
第三章 實驗內容與程序 8
3-1 研究對象 8
3-2 儀器介紹 9
3-3 實驗步驟與內容 10
3-3-1 溫濕度環境設定 10
3-3-2 鋁合金蜂巢板在不同溫濕度環境下之靜態及疲勞強度實驗 11
第四章 目前研究成果 19
4-1 鋁合金蜂巢板承受四點彎矩靜態實驗結果 19
4-1-1 溫度對鋁合金蜂巢板承受四點彎矩靜態極限強度之影響 19
4-1-2 濕度對鋁合金蜂巢板承受四點彎矩靜態極限強度之影響 20
4-2 鋁合金蜂巢板承受四點彎矩疲勞實驗結果 20
4-2-1 溫度對鋁合金蜂巢板承受四點彎矩疲勞壽命之影響 21
4-2-2 濕度對鋁合金蜂巢板承受四點彎矩疲勞壽命之影響 22
第五章 結論 77
參考文獻 79

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