Identification of isochromatic fringes - Simple guidelines are presented to number isochromatic fringes in static- and dynamic-photoelastic problems
Date of Original Version
In simple cases of static-photoelastic analysis, the numbering of the isochromatic fringes does not present unusual difficulties. In more complex cases, in particular wave propagation, the problem may be so difficult that few investigators attempt the analysis. In this paper guidelines to number the isochromatic fringes are presented. Advantage is taken of some topological properties as well as of the time and space derivatives of these isochromatic fringes. Several examples are discussed to illustrate the use of the guidelines. It is observed that under most conditions the guidelines are sufficient to number the whole field of isochromatics on photographs taken with the commonly used monochromatic light. © 1983 Society for Experimental Mechanics, Inc.
Durelli, A. J., and A. Shukla. "Identification of isochromatic fringes - Simple guidelines are presented to number isochromatic fringes in static- and dynamic-photoelastic problems." Experimental Mechanics 23, 1 (1983): 111-119. doi:10.1007/BF02328689.