Two-dimensional photoelasticity is based on the classical Wertheim law. The integral Wertheim law can be used in integrated photoelasticity only in the case when the directions of the secondary principal stresses are constant on the light beam. We generalize the integral Wertheim law for the case when a slight rotation of the secondary principal directions takes place.
© 2008 Optical Society of America
Original Manuscript: March 13, 2008
Revised Manuscript: May 13, 2008
Manuscript Accepted: May 19, 2008
Published: July 2, 2008
Leo Ainola and Hillar Aben, "On the generalized Wertheim law in integrated photoelasticity," J. Opt. Soc. Am. A 25, 1843-1849 (2008)