Inventors:
William K. Szaroletta - West Lafayette IN, US
John C. Anderson - Lafayette IN, US
Assignee:
Purdue Research Foundation - West Lafayette IN
International Classification:
G01B 11/16
Abstract:
Photoelastic elements are formed deliberately with stress concentrations so that, when evaluated with a polariscope, more pronounced isochromatic bands or fringes result when loads are applied to these elements or to assemblies of these elements. A kit of photoelastic elements, at least some of which have stress concentrations formed therein, is also disclosed. In addition, a toy for producing color patterns is disclosed.