隨著顯示器產業技術的進步，目前平面顯示器中以薄膜電晶體液晶顯示器(Thin Film Transistor-Liquid Crystal Display, TFT-LCD)為最大主流。隨著玻璃基板的輕薄化，玻璃材料的雙折射特性亦降低，使用傳統光彈法將不易量測玻璃內的應力值。本研究延續以往以光彈法結合光譜儀對光彈材料PSM-1所做的研究，利用光譜儀的高解析度及高靈敏度，嘗試對普通玻璃試片受力產生的條紋級次進行分析。除了使用拉伸試片，更使用圓盤試片，並找尋適當的量測位置，解決拉伸試片無法取得足夠條紋資訊的問題。另以白光為光源，並利用三步相位移光彈法計算出可見光波段在不同應力下之應力光學係數。
本研究亦利用白光光源搭配光譜儀提供準確的波長間穿透率資訊，進行穿透率對應應力與波長三維圖擬合，首次提出一個新的穿透率極值光彈理論(Transmissivity Extremities Theory of Photoelasticity, TETP)，以建立可見光波段的應力判斷公式。透過對玻璃試片隨機施加載，並將計算應力值與實際應力值做比較，以探討所建立之應力判斷公式的準確性。最後，對厚度更薄的玻璃試片進行實驗，確立以穿透率極值光彈理論所建立應力判斷公式的可行性。

[1] Website : www.auo.com
[2] G. H. Kim, W. J. Kim, S. M. Kim, and J. G. Son, “Analysis of Thermo-Physical and Optical Properties of a Diffuser Using PET/PC/PBT Copolymer in LCD Backlight Units,” Display, Vol. 26, pp. 37-43, 2005.
[3] G. H. Kim, “A PMMA Composite as an Optical Diffuser in a Liquid Crystal Display Backlighting Unit (BLU) ,” European Polymer Journal, Vol. 41, pp. 1729-1737, 2005.
[4] A. Asundi, “Phase Shifting in Photoelasticity,” Experimental Techniques, Vol. 17, pp. 19-23, 1993.
[5] A. Ajovalasit, S. Barone, and G. Petrucci, “Towards RGB Photoelasticity: Full-field Automated Photoelasticity in White Light,” Experimental Mechanics, Vol. 35, pp. 193-200, 1995.
[6] A. S. Voloshin and A. S. Redner, “Automated Measurement of Birefringence: Development and Experimental Evaluation of the Techniques,” Experimental Mechanics, Vol. 29, pp. 252-257, 1982.
[7] A. S. Redner, “Photoelastic Measurements of Residual Stress for NDE,” Proceedings of SPIE, Vol. 814, Photomechanics and Speckle Metrology, pp. 16-19, San Diego, CA, U.S.A., 1984.
[8] A. S. Redner, “Photoelastie Measurements by Means of Computer Assisted Spectral Contents Analysis,” Experimental Mechanics, Vol. 25, pp. 148-153, 1985.
[9] R. J. Sanford and V. Lyengar, “The Measurement of the Complete Photoelastic Fringe Order Using a Spectral Scanner,” Proceedings of SEM Spring Conference on Experimental Mechanics, pp. 160-168, Las Vegas, U.S.A., 1985.
[10] R. J. Sanford, “On the Range of Accuracy of Spectra by Scanned White Light Photoelasticity,” Proceedings of SEM Conference on Experimental Mechanics, pp. 901-908, New Orleans, U.S.A., 1986.
[11] H. Marwitz, W. Kizler, and X. Schuster, “Improved Efficiency in Photoelastic Coatings. Fast Detection of Fringe Order Using Computer Controlled Spectrometry,” Proceedings of 9th International Conference on Experimental Mechanics, Vol. 2, pp. 828-838, Copenhagen, Denmark, 1990.
[12] L. Ivanova and G. Nechev, “A Method for Investigation of the Residual Stress in Glasses with Spectral Polariscope,” Proceedings of 9th International Conference on Experimental Mechanics, Vol. 2, pp. 876-883, Copenhagen, Denmark, 1990.
[13] S. J. Haake and E. A. Patterson, “Photoelastic Analysis of Frozen Stressed Specimens Using Spectral-content Analysis,” Experimental Mechanics, Vol. 32, pp. 266-272, 1992.
[14] P. L. Mason, “Method and Apparatus for Measuring Retardation and Birefringence,” United States Patent, Patent No : US 5,825,492 A, Oct. 20, 1998.
[15] B. L. Wang, C. O. Theodore, and P. Kadlec, “Industrial Applications of a High-Sensitivity Linear Birefringence Measurement System,” Proceedings of SPIE, Vol. 3754, pp. 197-203, Monterey, CA, U. S. A., 1999.
[16] B. L. Wang, T. C. Oakberg, and P. Kadlec, “Birefreingence Measurement,” United States Patent, Patent No : US 6,697,157 B2, Feb. 24, 2004.
[17] Website : www.hindsinstruments.com
[18] S. Yoneyama, Y. Morimoto, and R. Matsui, “Photoelastic Fringe Pattern Analysis by Real-Time Phase-Shifting Method,” Optics and Lasers in Engineering, Vol. 39, pp.1-13, 2003.
[19] T. Wakayama, H. Kowa, Y. Otani, N. Umeda, and T. Yoshizawa, “Birefringence Dispersion Measurement by Geometric Phase,” Proceeding of SPIE, Vol.4902, pp. 406-411, 2002.
[20] T. Wakayama, Y. Otani, and N. Umeda, “Birefringence Dispersion Measurement Based on Achromatic Four Points of Geometric Phase,” Optical Engineering, vol. 45, pp. 083603-1-5, 2006.
[21] J. M. Cohen, R. G. Greene, D. S. Strope, and A. Kaplan, “Impact of Birefringence on Large LCDs,” SID Symposium Digest of Technical Papers, Vol. 33, pp. 329-331, 2002.
[22] C. L. Shepard, B. D. Cannon, and M. A. Khaleel, “Measurement of Internal Stress in Glass Articles,” Journal of the American Ceramic Society, Vol.86, pp. 1353-1359, 2003.
[23] H. J. Peng, S. P. Wong, Y. W. Lai, X. H. Liu, H. P. Ho, and S. Zhao, “Simplified System Based on Photoelastic Modulation Technique for Low-Level Birefringence Measurement,” Review of Scientific Instruments, Vol. 74, pp. 4745-4749, 2003.
[24] A. Ajovalasit, G. Petrucci, and M. Scafidi, “Phase Shifting Photoelasticity in White Light,” Optics and Lasers in Engineering, Vol. 45, Issue 5, pp.596-611, 2007.
[25] K. Gomi, T. Suzuki, Y. Niitsu, and K. Ichinose, “New Simplified Measuring Method for Distributed Low-Level Birefringence,” Proceedings of SPIE, Vol. 7155, pp. 715510-715511, 2008.
[26] Y. Wei, J. Hongwei, W. Shibin, and C. Xuedong, “Research on the Measurement of Large Glass Stress Distribution,” Proceedings of SPIE, Vol. 7283, pp. 72830X-1, 2009.
[27] A. Ajovalasit, G. Petrucci, and M. Scafidi, “Measurement of edge residual stresses in glass by the phase-shifting method,” Optics and Lasers in Engineering, Vol. 49, Issue 5, pp.652-657, 2011.
[28] 陳維仁, “光彈法結合光譜儀之應力分析”, 國立清華大學動力機械工程學系碩士論文, 2009.
[29] 曾郁程, “以光彈法結合光譜儀建立應力判斷公式”, 國立清華大學動力機械工程學系碩士論文, 2010.
[30] K. Ramesh, “Digital Photoelasticity : Advanced Techniques and Applications,” Springer-Verlag., pp. 144-146, Berlin, Germany, 2000.
[31] 趙清澄主編, “光測力學教程”, 第23頁, 高等教育出版社, 北京, 民國84年.
[32] ASTM Test Designation B557M, “Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric),” Annual Book of ASTM Standards, Vol. 02.02, pp. 578-594, Philadelphia, 1984.
[33] Website : www.ray-tech.com.tw
[34] Website : www.taiwanglass.com.tw
[35] Website : www.itrc.org.tw
[36] Website : www.sharplesstress.com
[37] Website : www.hmtech.com.tw
[38] Website : www.mathworks.com/products/matlab
[39] 吳政邦, “含一近表面裂縫半無窮平板之應力分析”, 國立清華大學動力機械工程學系碩士論文, 2005.
[40] Website : www.techniquip.com
[41] M. M. Frocht, “Photoelasticity,” vol.2, New York, Wiley, 1984, Ch.4.
[42] ASTM Test Designation C97-04, “Standard Test Method for Photoelastic Determination of Residual Stress in a Transparent Glass Matrix Using a Polarizing Microscope and Optical Retardation Compensation Procedures,” Annual Book of ASTM Standards, Vol. 15.02, pp. 1-9, Philadelphia, 2009.
[43] 此部份與本實驗室宋泊錡共同討論所得.