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Experiments in mechanical and optical coincidence in photoplasticity

Experiments are aimed principally at answering the basic question of whether optical anisotropy is necessarily associated with mechanical anisotropy, a point of fundamental importance in the application of the shear-difference method

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Abstract

In the extension of the shear-difference method to the separation of interior principal stresses in the elasto-plastic state1, a basic question arises whether the optical isoclinics give the directions of the principal stresses, i.e., whether optical coincidence exists. Experiments are described aiming to answer this question, and preliminary results are given for cellulose nitrate as a model material. Experiments are also described dealing with mechanical coincidence.

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Bibliography

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Authors and Affiliations

  1. Illinois Institute of Technology, Chicago, Ill.

    M. M. Frocht & R. A. Thomson

  2. University of Dayton, Dayton, Ohio

    M. M. Frocht & R. A. Thomson

Authors
  1. M. M. Frocht
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  2. R. A. Thomson
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Additional information

The results presented in this paper were obtained in the course of research sponsored by the Office of Ordnance Research, U. S. Army, under Contract No. DA-11-022-ORD-1609 with Illinois Institute of Technology.

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Frocht, M.M., Thomson, R.A. Experiments in mechanical and optical coincidence in photoplasticity. Experimental Mechanics 1, 43–47 (1961). https://doi.org/10.1007/BF02324934

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  • DOI: https://doi.org/10.1007/BF02324934

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