Abstract
The least-squares method is presented for obtaining an overdetermined solution from the various relationships available in photoelastic stress analysis. Equations are presented for incorporating the various relations into a weighted least-squares solution and advantages of this method are illustrated in two example problems. In addition to the greater accuracy possible in the overdetermined solution, the method permits weighting of the varied information and eliminates the need to separately determine the stress-optical constant. Variations of the method are discussed.
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Berghaus, D.G. Overdetermined photoelastic solutions using least squares. Experimental Mechanics 13, 97–104 (1973). https://doi.org/10.1007/BF02323966
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DOI: https://doi.org/10.1007/BF02323966