A Photoviscoelastic Study on Stress Freezing Method

Abstract

This paper is intended to propose a new technique based on linear-photoviscoelastic theory on the stress freezing method in order to improve the accuracy of measurement. Three functions for evaluating the accuracy of measurement on the stress freezing method are newly defined. The method for optimizing the temperature and loading conditions during stress freezing process is induced from linear photoviscoelastic theory. The availability of this method is confirmed experimentally by four-point bending-test of epoxy beam.