本文主要目的為應用數位影像相關法研究梁損傷之問題，藉由數位相機及萬能試驗機以進行實驗。實驗分為三個部分：(一) 利用數位相機拍攝試體在受力前後的影像，並透過數位影像相關理論所撰寫的電腦輔助運算程式分析影像，直接推算試體表面的變位資料。(二) 在試體中央處切割細縫，並採用相同的實驗方法及輔助程式進行分析，將兩者的結果繪製於同一張圖表上作比較並探討其關係，結果顯示在裂縫處位移會呈現較高的值並產生不連續的情形。(三) 建立一利用Hermitian多項式形狀函數作為內插函數的誤差方程式，分析試體在切割細縫前後的變位資料，結果顯示裂縫會導致誤差值偏高，並由此推估裂縫發生的位置。
本次實驗試體的材料為高強度鋼，利用電焊將零件組合成一完整試體，切割細縫目的在於模擬真實梁結構在負載下產生裂縫的情形。文中更說明如何利用萬能試驗機作延伸計及應變計的相關實驗。

This thesis used a digital camera and the testing machine (Instron 8801) for experiments applied the digital image correlation method to detect the beam damage.
This experiment had three parts: (1) Using images of the specimens before and after the force, we calculated the displacement through a computer program written by the digital image correlation theory directly. (2) Cutting a slit at the central of specimens with the same experimental methods and programs to analyze the results and discuss their relationship, the results revealed that more displacement in the cracks will happen and have a discontinuous condition.(3) The establishment of an error equation using the Hermitian polynomial shape functions as an interpolation function to analyze of deformations before and after the cutting slit, the results indicated that the cracks will lead to the high error value, and thus estimate the location of cracks occur.
The experimental material of the specimens was high-strength steel. Welding the parts to form a complete specimen was to simulate the real cutting the slit beam in the case of cracks under load. The article also describes how to use the testing machine (Instron 8801) and strain gauges for the extension of terms related experiments.

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