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Elimination and correction of the interactions between the photoelasticity parameters
|關鍵字:||Photoelasticity;光彈;Ambiguity;Isoclinic;Region;Phase unwrapping;模糊;等傾角;區域;相位展開||出版社:||機械工程學系所||引用:|| J.W. Dally, W.F. Riley, “Experimental stress analysis,” 3rd ed., New York, McGraw-Hill, 1991, Ch.12-13.  A. Ajovalasit, S. Barone, G. Petrucci, “A review of automated methods for the collection and analysis of photoelastic data,” Journal of Strain Analysis, 1998, vol.33, no.2, pp.75-91.  J.A. Quiroga, C.A. Gonazalez, “Phase measuring algorithm for extraction of isochromatics of photoelastic fringe patterns,” Applied Optics, 1997, vol.36, no.32, pp.8397-8402.  G. Petrucci, “Full field automatic evaluation of an isoclinic parameter in white light,” Experimental Mechanics, 1997, vol.37, no.4, pp.420-426.  M.J. Ekman, A.D. Nurse, “Absolute determination of the isochromatic parameter by load-stepping photoelasticity,” Experimental Mechanics, 1998, vol.38, no.3, pp.189-195.  C. Buckberry, D. Towers, “New approaches to the full-field analysis of photoelastic stress patterns,” Optics and Lasers in Engineering, 1996, vol.24, pp.415-428.  K. Ramesh, D.K.Tamrakar, “Improved determination of retardation in digital photoelasticity by load stepping,” Optics and Lasers in Engineering, 2000, vol.33, pp.387-400.  T. Liu, A. Asundi, C.G. Boay, “Full-field automated photoelasticity using two-load-step method,” Optical Engineering, 2001, vol.40, no.8, pp.1629-1635.  S. Yoneyama, Y. Morimoto, M. Kawamura,“Two-dimensional stress separation using phase-stepping interferometric photoelasticity,”Measurement Science and Technology, 2005, vol.16, pp.1329-1334.  A. Baldi, F. Bertolino, F. Ginesu, “A temporal phase unwrapping algorithm for photoelastic stress analysis,” Optics and Lasers in Engineering, 2007, vol.45, pp.612-617.  V.S. Prasad, K.R. Madhu, K. Ramesh, “Towards effective phase unwrapping in digital photoelasticity,” Optics and Lasers in Engineering, 2004, vol.42, pp.421-436.  K. Ashokan, K. Ramesh, “A novel approach for ambiguity removal in isochromatic phasemap in digital photoelasticity,” Measurement Science and Technology, 2006, vol.17, pp.2891-2896.  T. Kihara, “An arctangent unwrapping technique of photoelasticity using linearly polarized light at three wavelengths,” Strian, 2003, vol.39, pp.65-71.  P. Pinit, E. Umezaki, “Digitally whole-field analysis of isoclinic parameter in photoelasticity by four-step color phase-shifting technique,” Optics and Lasers in Engineering, 2007, vol.45, pp.795-807.  P. Siegmann, D. Backman, E.A. Patterson, “A robust approach to demodulating and unwrapping phase-stepped photoelastic data,”Experimental Mechanics, 2005, vol.45, no.3, pp.278-289.  J. Villa, J.A. Quiroga, E. Pascual, “Determination of isoclinics in photoelasticity with a fast regularized estimator,” Optics and Lasers in Engineering, 2008, vol.46, pp.236-242.  S. Barone, G. Burriesci, G. Petrucci, “Computer aided photoelasticity by an optimum phase stepping method,” Experimental Mechanics, 2002, vol.42, no.2, pp.132-139.  L. D’Acquisto, G. Petrucci, B. Zuccarello, “Full field automated evaluation of the quarter wave plate retardation by phase stepping technique,” Optics and Lasers in Engineering, 2002, vol.37, pp.389-400.  P.S. Theocaris, E.E. Gdoutos, “Matrix theory of photoelasticity,”New York, Springer-Verlag Berlin Heidelberg, 1979.  吳國安，「光彈相位圖不連續點之探討與改善」，中興大學機械工程學研究所碩士論文，2008。  龔黃光、黃柏文、陳鴻雄，「ANSYS 與電腦輔助工程分析」，全華科技圖書股份有限公司，2004。  M.M. Frocht, “Photoelasticity,” vol.2, New York, Wiley, 1948, Ch.4.  E.A. Patterson, Z.F. Wang, “Towards full field automated photoelastic analysis of complex components,” Strain, 1991, vol.27, no.2, pp.49-56.  A.D. Nurse, “Full-field automated photoelasticity by use of a three-wavelength approach to phase stepping,” Applied Optics, 1997, vol.36, no.23, pp.5781-5786.  J. Ramesh, K. Rangachar, S.G. Brian, “Machine vision,” New York, McGraw-Hill, 1995, Ch.2.  M.M. Frocht, “Photoelasticity,” vol.1, New York, Wiley, 1948, Ch.6.  M.J. Huang, C.J. Lai, “Phase unwrapping based on a parallel noise-immune algorithm,” Optics and Laser Technology, 2002, vol.34, pp.457-464.  陳森案，「相位重建之影像處理技術應用於光學量測之研究」，中興大學機械工程學研究所碩士論文，2002。  X.F. Yao, L.H. Jian, W. Xu, G.C. Jin, H.Y. Yeh, “Digital shifting photoelasticity with optical enlarged unwrapping technology for local stress measurement,” Optics and Laser Technology, 2005, vol.37, pp.582-589.||摘要:||
The reason that we can conveniently obtain the full-field stress information from photoelasticity is due to it provides two parameters, isochromatic and isoclinic, by the polariscope. However, the phase-stepping method will produce the isoclinic-isochromatic interactions that is undefined region and ambiguity(ambiguous region) on the phase maps of photoelasticity. So, the paper presents a method to eliminate and correct the undefined region and ambiguity by the polariscope configuration and phase unwrapping algorithm, respectively. The former, the configuration is based on the four-step plane polariscope with white light and six-step circular polariscope with monochromatic light, and the latter, the algorithm is a phase unwrapping technique that is based on image processes involved in connecting points and region split for the isoclinic parameter. The correct experimental result and fine process time confirmed the availability and benefit of the configuration and algorithm proposed in the paper.
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