Measuring residual stresses in homogeneous and composite glass materials using photoelastic techniques

Abstract: This chapter gives a review of the modern photoelastic techniques for residual stress measurement in homogeneous and composite glass articles, including glass articles of complicated shape. For residual stress measurement in axisymmetrical glass articles, integrated photoelasticity is being used. In the case of non-axisymmetrical glass articles of complicated shape, photoelastic tomography is to be used. As for automotive and architectural glass panels used in buildings, surface stress can be measured with the mirage method. More complete stress analysis can be carried out with the scattered light method.