Abstract
Local and global approaches to digital image correlation are compared when the displacement interpolation is based upon bilinear shape functions (i.e., with four-noded quadrilaterals). The resolution in terms of displacements and strains provided by both techniques is evaluated by using a series of images from a real experiment. It is shown that global approaches out-perform a local approach. For the global approach, mesh adaption is proposed to get a quasi-uniform uncertainty distribution over the whole region of interest.
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© 2013 The Society for Experimental Mechanics, Inc.
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Hild, F., Roux, S. (2013). On the Resolution of Local and Global DIC Approaches. In: Jin, H., Sciammarella, C., Furlong, C., Yoshida, S. (eds) Imaging Methods for Novel Materials and Challenging Applications, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-4235-6_31
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DOI: https://doi.org/10.1007/978-1-4614-4235-6_31
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