Abstract
In this investigation, the photoelastic technique with a modulated-ruby-laser light source was used to determine the maximum dynamic-stress concentration factors in a strut containing a symmetrically located elliptical discontinuity. The two parameters, time after impact and size of discontinuity, were considered. Some simplifying assumptions and the one- and two-dimensional theory of stress-wave propagation were used to develop a theoretical solution which agrees well with experimental results.
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