Abstract
Whole-field contour maps of shear strains γ xy are derived from displacement fields obtained by moiré interferometry with 2400 ℓ/mm (60,960 ℓ/in.). Cross-derivatives of displacements are obtained by mechanical differentiation. They are summed by graphical additive moiré. The high sensitivity of moiré interferometry permits quantitative analysis in the small-strain domain.
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Post, D., Czarnek, R. & Joh, D. Shear-strain contours from moiré interferometry. Experimental Mechanics 25, 282–287 (1985). https://doi.org/10.1007/BF02325098
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DOI: https://doi.org/10.1007/BF02325098