21305 RGB平面偏光光弾性における等色線縞次数の決定(材料強度と実験力学(1),OS.3 材料強度と実験力学,学術講演)

概要

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A new method was developed for automatically determining the absolute fringe orders of isochromatics in the whole field of a model from color photoelastic fringes obtained in a plane polariscope. This method used the following four data : (1) a set of five color photoelastic images, which were obtained at five sets of angular positions of the polaroids in dark- and light-field polariscopes, to obtain relative fringe orders; (2) the points of reversal of increase and decrease in the fringe orders ; (3) the points of external values of relative fringe orders; and (4) the first unwrapped phase regions between 0 and 0.5 fringe orders, which are used as seed points. To evaluate the effectiveness of the proposed method, a set of five color photoelastic fringes for a circular disk subjected to a concentrated load was used. Results showed that the proposed method yields accurate the absolute fringe orders of isochromatics.
社団法人日本機械学会の論文
2008-03-13