A New Separation Method of Principal Stresses for Plane Stress Problems

概要

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In this paper, a new method for the separation of principal stresses is described, which consists in combining the following data : isoclinic parameter and isochromatic fringe order measured by the conventional method, and also the fringe order distributinon obtained by the scattered-light method. As the photoelastic material, polycarbonate resin with a good transparency was used. Besides, using the circularly polarized light in the scattered-light method, fractional fringe orders were determined from the rotated angle of the polarizer, as is practiced in Tardy's method. This method was appleid to two well-known problems already solved theoretically. The experimental results were compared with the corresponding theoretical solutions and a good agreement between these results showed the practicability of this method. Throughout the experiment, it was shown taht the experimental procedure was simple and the calculation of prindipal stresses was easier than the conventional methods.
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