可撓式COC薄板之光彈應力分析

The photoelastic stress analysis of the flexible COC thin plates

黃士魁(Shih-Kuei Huang)

指導教授 ： 李廣齊

國立虎尾科技大學/工程學院/機械與機電工程研究所/碩士(2009年)

摘要

論文針對環烯烴共聚合物(COC)透明塑膠片之光彈應力檢測，其中按平面偏振光場實驗架構組裝光彈性應力檢測系統，利用光彈應力檢測方法協助量測COC透明塑膠片上受其各種壓力時，所能量測到之內應力的大小，並利用影像處理方法分析所量測到之光彈應力影像。由於COC透明薄片具有可撓曲此特性，進行疲勞彎曲測試後，利用光學顯微鏡觀察到之塑膠片受到反覆彎曲壓縮後所產生之皺折紋理及受到反覆拉伸後產生之破裂紋理情形與光彈應力檢測結果彼此比對驗證。由實驗數據建模光彈應力模型方程式，並以比對數據驗證此光彈應力模型方程式的可行性，結果顯示，本文光彈應力模型誤差在±10%以內。

關鍵字

光彈應力檢測 ； 撓曲 ； 影像處理

並列摘要

In this paper, we proposed a photoelastic stress analysis method for transparent plastic film Cycle Olefin Copolymer (COC) transparent plastic film. From the residual stress data, we can modify the process of the COC flexible plastic substrate material. An image processing method is developed in this paper to compute the fringe number of photoelastic image. From the experiment’s data, a photoelastic stress model is setup. In this study, an image processing method for photoelastic image analysis. A set of compared data are used to evaluate the feasibility of this model. The results show that the error of this photoelastic stress model is within ±10%.And fatigue bending test for COC transparent plastic film, the repeated bending test by 100 to 1000 times, use the optical microscope to observe the surface breakdown cases of the plastic film.

並列關鍵字

Photoelastic Stress Analysis, ； Flexible, ； Image Processing

參考文獻

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