A special investigation to develop a general method for three-dimensional photoelastic stress analysis

M. M. Frocht, R. Guernsey, Jr.

The method of strain measurement after annealing is reviewed and found to be satisfactory for the materials available in this country. A new general method is described for the photoelastic determination of the principal stresses at any point of a general body subjected to arbitrary load. The method has been applied to a sphere subjected to diametrical compressive loads. The results show possibilities of high accuracy.

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