Assessment of measuring errors in DIC using deformation fields generated by plastic FEA

By P. Lava, S. Cooreman, S. Coppieters, M. Strycker, D. Debruyne. 2009

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The Grid Method for In‐plane Displacement and Strain Measurement: A Review and Analysis (2016, background): “Assessing the errors made while measuring displacement or strain components is addressed in several papers on DIC, see [149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 100, 101] for instance.”
Novel Technique for Static and Dynamic Shear Testing of Ti6Al4V Sheet (2012, background): “The deformation gradient F describes the relative spatial position of two neighbouring particles after deformation x in terms of their relative material position before deformation x0: F=∂x/∂x0=I+∂u/∂x0 with u the displacement vector [25].”
Determining the stress-strain behaviour at large strains from high strain rate tensile and shear experiments (2011, methodology): “Furthermore, interpretation of the DIC results is not straightforward, errors can easily be introduced [18, 19].”