數位全像術在二維形變量測之應用

2-D displacement measurements using digital holography

林鈺涵(U-Han Lin)

指導教授 ： 林世聰

國立臺北科技大學/電資學院/光電工程系研究所/碩士(2014年)

摘要

為了達到同步雙維位移量測之目標，在本研究首先提出以數位全像術來量測受測體之(V,W) 位移場。光學架設是在y-z平面上，架設對稱雙物光及參考光；受測體變形前拍攝兩張全像片，變形後再拍攝兩張；利用這四張全像片的重建相位，即可推算(V,W)位移場。
本研究實際完成了該架設，並以它測量試片鋼體位移及形變，結果驗證了該架設的正確性與實用性。

關鍵字

數位全像術 ； 全像片 ； 二維形變

並列摘要

To enlarge the applicability of digital holography, this research first employs digital holography to detect V and W displacements of a sample simultaneously. The optical setup which contains two objects is placed on the y-z plane, waves and a reference wave, and it takes two holograms before sample deformation and two more holograms after sample deformation. By using the four phase maps reconstructed from the four holograms, the V and W displacements can then be extracted.
This research has completed the construction of the setup, and it was carried to examine the rigid body motion and deformation of a sample. The results agree the validity and feasibility of the set up.

並列關鍵字

digital holography ； displacement measurement ； deformation measurement

參考文獻

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