Experimental Mechanics

, Volume 14, Issue 3, pp 118–122

Determination of the optically equivalent model in three-dimensional photoelasticity

The experimental determination of the three characteristic parameters, i.e., the characteristic retardation, the characteristic direction and the rotation, which describe the optical behavior of a three-dimensional photoelastic model is described
  • L. S. Srinath
  • A. V. S. S. S. R. Sarma

DOI: 10.1007/BF02324775

Cite this article as:
Srinath, L.S. & Sarma, A.V.S.S.S.R. Experimental Mechanics (1974) 14: 118. doi:10.1007/BF02324775


Any stressed photoelastic medium can be reduced to an optically equivalent model consisting of a linear retarder, with retardation δ1 and principal axis at azimuth φ1, and a pure rotator of power φ2. The paper describes two simple methods to determine these quantities experimentally. Further, a method is described to overcome the problem of rotational effects in scattered-light investigations. This new method makes use of the experimentally determined characteristic parameters.

Copyright information

© Society for Experimental Mechanics, Inc. 1974

Authors and Affiliations

  • L. S. Srinath
    • 1
  • A. V. S. S. S. R. Sarma
    • 2
  1. 1.Indian Institute of ScienceBangaloreIndia
  2. 2.Indian Institute of TechnologyKampurIndia