當物體受力時要量測其內部應力的分布或變化最準確的方法即是由實驗去求得。光彈應力分析是一門發展許久的且有許多的著作的應力量測技術，其不僅僅適用於物體二維應力的量測，在三維應力的量測方面亦能發揮其強大的功用，若將其自動化後以應用於應力的分析，可快速且準確得到物體每點所受應力的情況。

　　本文主要在發展一套能夠快速得到物體應力分布情形的軟硬體設備，以及應用一種較新Min-Max法配合二種波長用以求得等傾線上的主應力方向角及等色線上的條紋序數分布之情形，並對先前所應用的理論加以分析及改進，以求得更精確、誤差更小之計算結果。在硬體方法改善了傳統使用二波長或三波長時需要更換濾光片的麻煩，將其設置為一次能處理二種波長的影像，在軟體的應用方面亦提出新的方法計算其起始點的條紋序數。

　The most precise way to measure the stress state or variation of a object that subject by force is by experiment. The photoelastic stress analysis is a technology with a long development and many papers. It uses not only in 2D stress analysis but also with a powerful function in 3D analysis. It could be very fast and accurate in analysis of the stress of a subject if it operates automatically. The main purpose of the article is to build a software and hardware to get the stress distribution of an object and apply a new way：Min-Max with two waves to get the principle stress direction in isoclinic and fringe order in isochromatic. Analyzing and amending the former theorem in calculate fringe order in order to get more precise and less error result. In hardware, we can handle two images in a time. In software, we apply a new way to calculate fringe order made a good progress.

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