Implementation of correction coefficients relevant for photoelastic coatings into the PhotoStress software

Optical experimental method PhotoStress is based on the principle of birefringence that occurs on photoelastic coatings on the surface of an object subject to examination. However, photoelastic coating strengthens the examined surface; hence, strains that co-occur in the analysed object exhibit lower values than when no coating is applied. This is the reason for the implementation of relationships for correction coefficients into the PhotoStress software which is now being designed. These coefficients are supposed to eliminate discrepancies in gained values resulting from the impact of stiffness through applied photoelastic coating. Into the PhotoStress software were implemented correction coefficients for plane stress C-PS, one-side coated objects under bending stress C-B, two-sides coated objects under bending stress C-B2, shaft rotation C-t and pressure vessels C-N. The following paper includes explanations of particular types of corrections which were implemented into the PhotoStress software.