Elasto-Plastic Stress-Optical Effect in Silver Chloride Single Crystals

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Abstract
The use of silver chloride as a material for ``photoelastic'' stress analysis offers the possibilities of studying both elastic and plastic states of stress in a crystalline material on either a micro- or macroscale. It is necessary, however, to relate quantitatively the stress state and the observed relative retardation and extinction angle. In this paper these relationships are developed from a general theory of stress birefringence, according to a stress-dependent hypothesis. This hypothesis and the resulting analytical relationships are experimentally vindicated by measurements made on a variety of single crystal specimens of silver chloride tested in simple tension in the elastic and plastic stress ranges.

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