Precision casting of epoxy-resin photoelastic models
- 1 January 1973
- journal article
- research article
- Published by SAGE Publications in Journal of Strain Analysis
- Vol. 8 (1) , 30-34
- https://doi.org/10.1243/03093247v081030
Abstract
Photoelastic models may be made by four different methods: by machining from fully cured blocks; by machining of oversize simplified castings; by cementing of machined parts; by accurate casting to the same shape as the prototype. A method of casting models to the same proportional accuracy as the prototype and its limitation are described. In this technique a pattern is coated with silicone rubber which is supported by an epoxy-resin casing. Curing shrinkage and differential thermal expansion of the epoxy casing, rubber coating, and Araldite casting are factors which essentially influence the resulting accuracy of the cast models.Keywords
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