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研究生: 劉柏彣
Po-Wen Liu
論文名稱: 構件在高頻諧和力作用下之數位光黏彈探討
Digital Photoviscoelastic Investigation of Structural Components under High Frequency Harmonic Force
指導教授: 王偉中
Wei-Chung Wang
口試委員:
學位類別: 碩士
Master
系所名稱: 工學院 - 動力機械工程學系
Department of Power Mechanical Engineering
論文出版年: 2008
畢業學年度: 96
語文別: 中文
論文頁數: 192
中文關鍵詞: 超音波高頻諧和力黏彈光彈光黏彈
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  • 在工程應用上光彈法已經被廣泛應用於求取工程構件內部應力及應變,本研究主要是以數位光彈法為基礎,運用光彈法的非接觸性、全域性及即時性量測的特質,針對一矩形構件在高頻諧和力作用下隨時間及溫度變化的應力分佈及應力波做一完整的研究。
    由於光彈法是只適用於彈性理論及彈性範圍內,如果加入時間和溫度的效應勢必會有黏彈的效應發生,因此希望能利用拉伸試驗將拉伸機取得之實驗數據和光彈儀同步取得之實驗影像,藉由交叉比對的方式發展出一套數位光黏彈實驗及量測系統,再運用數位光黏彈系統分析矩形構件在高頻諧和力作用下隨時間及溫度變化的應力分佈及應力波。


    一、簡介 1 二、文獻回顧 2 三、實驗原理 7 3.1 各向等性黏彈性材料在等溫條件下之應力及應變關係 7 3.2 試片為線性黏彈性材料之判定 8 3.3 鬆弛模數主曲線或蠕變柔量主曲線之求取 9 3.4 本構方程式之求取 10 3.5 高頻諧和力作用下之應力場與應變場分析 14 四、試片之製作及裝置 16 4.1 實驗裝置 16 4.2 試片之製作及規劃 20 4.2.1 試片之製程研究 20 4.2.2 試片之製作 23 4.2.3 測試黏彈材料性質試片之規劃 26 4.2.4 動態機械分析試片之規劃 28 4.2.5 超音波實驗試片之規劃 28 4.2.6 密度量測試片之規劃 29 五、實驗分析程序 30 5.1 試片可靠度分析程序 30 5.2 光學和拉伸實驗分析程序 32 5.3 超音波實驗分析程序 41 5.4 密度實驗分析程序 43 六、結果與討論 44 6.1 DSC實驗 44 6.2 DMA實驗 45 6.3 密度實驗 46 6.4 拉伸實驗和光學實驗 46 6.5 鬆弛實驗和光學實驗 57 6.6 超音波實驗 64 七、結論與未來展望 72 7.1 結論 72 7.2 未來展望 74 八、參考文獻

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