K. Ramesh et V. Ganapathy, PHASE-SHIFTING METHODOLOGIES IN PHOTOELASTIC ANALYSIS - THE APPLICATION OF JONES CALCULUS, Journal of strain analysis for engineering design, 31(6), 1996, pp. 423-432
The potential of digital image processing hardware to record intensity
data at video rates has resulted in a new approach for data collectio
n. Efforts were aimed at evaluating isochromatic and isoclinic fringe
orders quantitatively by processing the intensity data recorded. These
methodologies have come to be known as phase-shifting techniques. The
various phase-shifting algorithms in photoelasticity are surveyed and
a comparative study is done. The use of Jones calculus to understand
these methodologies is brought out. An attempt has been made to identi
fy the reason for loss of accuracy in evaluating the field parameters
in stress concentration zones.