Abstract
The method of birefringent coatings allows the evaluation of the strain distribution on the surface of an opaque body, by using the principles of two-dimensional photoelasticity developed in Chapter 7. This method may be considered as an application and extension to opaque materials of two-dimensional photoelasticity, which is applicable to only transparent models. The method of birefringent coatings consists of cementing a piece of transparent material (the birefringent coating) on the surface of the body under investigation and measuring the amount and the principal directions of the temporary birefringence developed in the coating when the main object is subjected to a system of loads.
Published Version
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