全可視光領域対応型自動位相差測定機の光弾性応力解析への応用

抄録

The automatic retardation tester was made to measure easily and precisely the absolute retardation in the polymar films. The retardaion in the test piece can be measured for all visible light, because the tester has the composite quater wave plate in it's optical system.
In the present study, this equipment is applied for the stress analysis in the photoelastic model. The photographs has been used as the most popular method of stress analysis in the photoelasticity. Its method, it is difficult to determine the absolute fringe order in the isochromatics fringe pattern. Moreover it is also difficult to determine precisely the direction of the principal stress in each point of the test piece. The error is included in each measured value in the photograph's method. The validity of the tester for stress analysis is confirmed by comparing the results of stress analysis of photograph's and tester's method.