Abstract
Electronic-speckle-pattern interferometry and moiré interferometry have been used to calculateK 1 andJ for compact tension specimens. Automated-fringe-pattern analysis enables the full-field of data to be used with the minimum of operator intervention. Measurements are shown to be accurate to within 10 percent. TheJ-measurement procedure employed could form the basis of an automatic-fault detection system.
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Moore, A.J., Tyrer, J.R. Phase-stepped ESPI and moiré interferometry for measuring stress-intensity factor andJ integral. Experimental Mechanics 35, 306–314 (1995). https://doi.org/10.1007/BF02317539
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DOI: https://doi.org/10.1007/BF02317539