Abstract
The application of the frozen stress photoelastic technique to the determination of stress intensity factors in two-and three-dimensional problems is discussed. The technique, involving casting flaws by the insertion of thin shims, is found to give accurate results for problems with a known exact analytical solutions: a central crack in a wide plate and an embedded circular crack. It is applied to other problems without a known solution or for which only approximate solutions, often providing inconsistent answers exist.
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