Dynamic-stress concentration using photoelasticity and a laser light source |
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Authors: | W P T North C E Taylor |
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Institution: | 1. Mechanical Engineering Department, University of Windsor, Windsor, Ontario 2. Theoretical and Applied Mechanics, University of Illinois, Urbana, Ill.
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Abstract: | Since experimental techniques using dynamic photoelasticity are, in general, limited by suitably intense monochromatic light sources, it was of primary importance to describe a ruby-laser system which would completely remove this particular aspect of the problem. Modulation of the system, in this case by a Kerr cell, provides the necessary control of the light output such that a complete series of results can be obtained by putting together the results of many individual tests recorded on a conventional still camera. In this case, the dynamic-stress-concentration factor in a strut with a symmetrically located circular discontinuity was determined to establish definitely the potential of the system. |
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