The theoretical description of spectral contents analysis is extended to red-green-blue (RGB) photoelasticity. The integration of the resultant methodology for spectral analysis with phase stepping is used to achieve automatic analysis of photoelastic fringe patterns containing a minimum fringe order of no greater than four, and without the requirement for a zero-order fringe order to be present in the pattern.
AjovalisitA.BaroneS.PetrucciG.A review of automated methods for the collection and analysis of photoelastic data. J. Strain Analysis, 1998, 33 (2), 75–91.
2.
AjovalisitA.BaroneS.PetrucciG.Towards RGB photoelasticity; full-field automated photoelasticity in white light. Expl Mechanics, 1995, 35, 193–200.
3.
RameshK.GanapathyV.Phase-shifting methodologies in photoelastic analysis—the application of Jones calculus. J. Strain Analysis, 1996, 31 (6), 423–432.
4.
BuckberryC.TowersD.New approaches to the fullfield analysis of photoelastic fringe patterns. Optics Lasers Engng, 1996, 24, 415–428.
5.
ChenT. Y.Digital determination of photoelastic birefringence using two wavelengths. Expl Mechanics, 1997, 37 (3), 232–236.
6.
NurseA. D.Full-field automated photoelasticity by the use of a three-wavelength approach to phase-stepping. Appl. Optics, 1997, 36 (23), 5781–5786.
7.
PattersonE. A.WangZ. F.Simultaneous observation of phase-stepped images for automated photoelasticity. J. Strain Analysis, 1998, 33 (1), 1–16.
8.
RednerA. S.Photoelastic measurements by means of computer assisted spectral-contents analysis. In Proceedings of the Fifth International Conference in Experimental Mechanics, Montreal, Canada, 1984, pp. 421–427.
HaakeS. J.PattersonE. A.The dispersion of birefringence in photoelastic materials. Strain, 1993, 29 (1), 3–7.
11.
JiW.PattersonE. A.Simulation of errors in automated photoelasticity. Expl Mechanics, 1998, 38 (2), 132–139.
12.
PetrucciG.Full-field evaluation of an isoclinic parameter in white light. Expl Mechanics, 1997, 37 (4), 420–426.
13.
PattersonE. A.WangZ. F.Phase-stepping in photoelasticity using white light. In Proceedings of the SEM Spring Conference onExperimental Mechanics, 1997, pp. 366–367.
14.
WangZ. F.PattersonE. A.Use of phase-stepping with demodulation and fuzzy sets for birefringence measurements. Optics Lasers Engng, 1995, 22, 91–104.