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研究生: 陳家禾
Chen, Jia-He
論文名稱: 數位影像相關法位移誤差與像差關係之探討
INVESTIGATION OF RELATIONSHIP BETWEEN DISPLACEMENT ERROR AND ABERRATION OF DIGITAL IMAGE CORRELATION METHOD
指導教授: 王偉中
Wang, Wei-Chung
口試委員: 陳政寰
羅鵬飛
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: 2014
畢業學年度: 102
語文別: 中文
論文頁數: 139
中文關鍵詞: 數位影像相關法系統誤差位移量測誤差像差
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  • 本研究應用數位影像相關(Digital Image Correlation, DIC)法系統拍攝靜止之待測試片,經由分析軟體計算後得知DIC系統量測精度資訊,並針對造成系統量測誤差之因素進行探討。
    本研究中同時使用二維數位影像相關(Two-Dimensional Digital Image Correlation, 2D-DIC)法及三維數位影像相關(Three-Dimensional Digital Image Correlation, 3D-DIC)法進行位移量測,並使用步進馬達及定位板裝置兩種方式使試片進行剛體平移,擷取試片在不同位置之影像進行分析,將定位板實驗結果與步進馬達實驗結果進行比對及驗證,並探討位移誤差值及造成位移量測誤差之因素。
    本研究最後針對DIC分析結果中的位移分布與像差關係做連結,並透過像差模型解釋擷取影像因受到像差的影響,進而造成的量測誤差,及在位移輪廓圖中出現位移分布不均勻之現象。


    目錄 I 圖目錄 IV 表目錄 IX 一、簡介 1 二、文獻回顧 4 2.1 數位影像相關法 4 2.2應用Zernike 多項式[16,17] 8 三、實驗原理 9 3.1 數位影像相關法[5,20-22] 9 3.2 變形與位移[4,9,5,21] 10 3.3 相關函數[6,9,5,21] 12 3.4 數值方法 15 3.4.1 粗-細法[3,5,21] 15 3.4.2 牛頓-拉福森法[6] 19 3.5 影像重建[5,7,21] 25 3.5.1雙線性內插法 25 3.5.2 雙立方內插法 26 3.6三維影像相關法[5,9,12] 29 3.7 影像校正討論 33 3.8 Zernike多項式[17,19] 35 四、實驗裝置與試片 39 4.1 實驗裝置 39 4.2實驗試片 42 4.3定位板實驗裝置 43 五、實驗程序 44 5.1試片製作 44 5.2相機校正程序 45 5.3 DIC法實驗程序 46 5.4 剛體平移實驗 47 5.5最大視角位置影像擷取與分析 48 5.6定位板位移實驗 50 六、結果與討論 51 6.1 X方向剛體平移實驗結果 51 6.2方格紙試片實驗結果 54 6.3位移分布不連續的現象 55 6.4 DIC系統誤差實驗結果 58 6.5最大視角實驗結果(2D-DIC法) 61 6.6最大視角實驗結果(3D-DIC法) 65 6.7定位板位移實驗結果 71 6.8 Z方向剛體平移實驗結果 72 七、結論與未來展望 76 7.1 結論 76 7.2 未來展望 80 八、參考文獻 83

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