Wang Runwen. Seperation of photoelastic fringes and measurement of internal spatial stresses[J]. Chinese Journal of Lasers, 1980, 7(7): 34
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A brief review is given on the analysis of photoelastic stress including interferometric and holographic methods.It is pointed out that the successful seperation of isochromic fringes from isopachic ones by using photoelastic method is an experimental breakthrough.A new method is proposed for seperating the isochromic fringes from the isopachic fringes by optical information processing.