An alternative method for the determination of three-dimensional stresses in photoelastic models is discussed. The model is sectioned into discrete, imaginary slices and a relationship is derived between the retardation and isoclinic angle of each slice and characteristic photoelastic parameters measured using a transmission polariscope. An illustration of the multi-load method is given and the practical application of the technique is discussed.
FesslerH.An assessment of frozen stress photoelasticity. J. Strain Analysis, 1993, 27 (3), 123–126.
2.
KeshavenS. Y.The multi-load method of determining discrete system parameters in a loaded three dimensional photoelastic model. Strain, 1994, 30 (1), 3–8.
3.
SrinathL. S.SarmaA. V.S.S.S.R.Effects of stress-induced optical activity in photoelasticity. J. Physics D, 1972, 5, 883–895.
4.
AbenH. K.Optical phenomena in photoelastic models by the rotation of principal axes. Expl Mechanics, 1966, 6 (1), 13–22.
5.
AbenH. K.Integrated Photoelasticity, 1979 (McGraw-Hill, New York).
6.
JonesC.A new calculus for treatment of optical systems. J. Opt. Soc. Am., 1941, 31, 488–500.
7.
TomlinsonR. A.PattersonE. A.Determination of characteristic parameters for integrated photoelasticity using phase-stepping. In Proceedings of the 1998 SEM Spring Conference onExperimental and Applied Mechanics, Houston, Texas, 1–3 June 1998, pp. 118–121 (Society for Experimental Mechanics, Bethel, Connecticut).
8.
Mathcad User's Guide, November 1995 (Mathsoft, Inc., Cambridge, Massachusetts).