1 January 1987 Digital Phase-Shifting Photoelasticity
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Proceedings Volume 0813, Optics and the Information Age; (1987) https://doi.org/10.1117/12.967170
Event: 14th Congress of the International Commission for Optics, 1987, Quebec, Canada
Digital phase-shifting photoelasticity 1)2) can be regarded as an extension of recently introduced computer-aided phase-shifting methods, the objective of which is the detection of one phase (e.g. 3)4)), to a two-phase problem. The two phases governing, in a general case, intensity distributions of photo-elastic patterns of planely stressed bodies are: relative retardation S(xl,x2), which is related to the difference of local principal stresses, and isoclinic parameter a(x1,x2), which describes the angular position of local principal axes belonging to principal stresses ai ?ooli. It is known from photoelastic point methods (compensation and ac-phase measurement techniques5)) that phase-shifting of photoelastic patterns is achieved by independent rotation of two polarizing components of a polariscope.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
F W. Hecker, F W. Hecker, H. Abeln, H. Abeln, } "Digital Phase-Shifting Photoelasticity", Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); doi: 10.1117/12.967170; https://doi.org/10.1117/12.967170


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