UNWRAPPING ISOCHROMATIC BY COMBINING WHITE LIGHT PHOTOELASTICITY WITH PHASE SHIFTING THCHNOLOGY
Use of a color code to identify fringe orders has been in use in conventional photoelasticity.Phase shifting technology is the most widely used for isochromatic evaluation due to its simplicity and accuracy.The phase shifting method obtain isochromatic only in a wrapped form.On the one hand the colors tend to merge beyond fringe order three in whit