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研究生: 張依琳
Yi-Lin Chang
論文名稱: 均時電子光斑影像干涉術於振動量測之理論與實驗再探討
Theoretical and experimental re-examination of the vibration measurement using time-averaged electronic speckle pattern interferometry
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: 94
中文關鍵詞: 改良振幅變動電子光斑測量術改良均時電子光斑測量術相位移振幅變動電子光斑影像干涉術相位移均時電子光斑影像干涉術U
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  • 本研究首先將環境干擾因素加入考量,推導出改良均時電子光斑測量術之理論,之後採用由靜態電子光斑影像干涉術所得影像以驗證快速傅利葉轉換可將影像中所存在光斑項加以濾除,接著運用快速傅利葉轉換分別將傳統均時電子光斑影像干涉術以及振幅變動電子光斑影像干涉術實驗所得影像之灰度值加以比對,而深入瞭解以傳統均時電子光斑影像干涉術和振幅變動電子光斑影像干涉術所得干涉條紋之意義,並加以驗證改良均時電子光斑測量術和改良振幅變動電子光斑測量術之理論。
    本研究運用改良振幅變動電子光斑測量術量測平板在非共振頻率下之振動行為,亦利用商用有限單元法套裝軟體ANSYS進行平板振動之數值模擬,將數值與實驗兩種結果交互驗證。


    一、簡介 1 二、文獻回顧 3 三、實驗原理 5 3.1傳統電子光斑影像干涉術 5 3.2傳統均時電子光斑影像干涉術 7 3.3改良振幅變動電子光斑量測術 9 3.4改良均時變動電子光斑量測術 14 四、實驗裝置與試片規劃 17 4.1實驗裝置 17 4.1.1 ESPI實驗裝置 17 4.1.2模態測試實驗裝置 19 4.1.3模態測試軟體STAR 20 4.2試片規劃 20 五、實驗程序 21 5.1靜態 ESPI實驗及分析 21 5.2快速傅利葉轉換處理 21 5.3模態測試實驗程序 22 5.4 AF-ESPI實驗分析程序 22 5.5 ANSYS軟體模擬分析程序 23 5.5.1建立模型 23 5.5.2邊界條件 23 5.5.3後處理 23 六、結果與討論 24 6.1靜態電子光斑影像干涉術 24 6.2快速傅利葉轉換處理之結果 25 6.3模態測試法 26 6.4傳統均時電子光斑影像干涉術 26 6.5振幅變動電子光斑影像干涉術 30 6.6相位移均時法電子光斑影像干涉術 32 6.7相位移振幅變動電子光斑影像干涉術 34 6.8非共振頻率振型分析 37 6.8.1 MAF-ESM實驗結果 38 6.8.2有限元素法 40 七、結論與未來展望 44 7.1結論 44 7.2未來展望 45 八、參考文獻 46 附錄A、Thermal Deformation Measurement in Thermoelectric Coolers by ESPI A1

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