Abstract
Mechanical Shape Correlation (MSC) is a novel integrated digital image correlation technique, used to determine the optimal set of constitutive parameters to describe the experimentally observed mechanical behavior of a test specimen, based on digital images taken during the experiment. In contrast to regular digital image correlation techniques, where grayscale speckle patterns are correlated, the images used in MSC are projections of the sample contour. This enables the analysis of experiments for which this was previously not possible, because of restrictions due to the speckle pattern. For example, analysis becomes impossible if parts of the specimen move or rotate out of view as a result of complex and three-dimensional deformations and if the speckle pattern degrades due to large deformations. When correlating on the sample outline, these problems are overcome. However, it is necessary that the outline is large with respect to the structure volume and that its shape changes significantly upon deformation, to ensure sufficient sensitivity of the images to the model parameters. Virtual experiments concerning stretchable electronic interconnects, which because of their slender wire-like structure satisfy the conditions for MSC, are executed and yield accurate results in the objective model parameters. This is a promising result for the use of the MSC method for tests with stretchable electronics and other (micromechanical) experiments in general.
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References
Neggers, J., Hoefnagels, J.P.M., Geers, M.G.D., Hild, F., Roux, S.: Time-resolved integrated digital image correlation. Int. J. Numer. Methods Eng. 103(3), 157–182 (2015). doi: https://doi.org/10.1002/nme.4882
Ruybalid, A.P., Hoefnagels, J.P.M., van der Sluis O., Geers, M.G.D.: Comparison of the identification performance of conventional FEM updated and integrated DIC. Int. J. Numer. Methods Eng. 106(4), 298–320, (2016). doi: https://doi.org/10.1002/nme.5127
Kleinendorst, S.M., Hoefnagels, J.P.M., Geers, M.G.D.: Mechanical shape correlation: a novel integrated digital image correlation approach. (2017, In preparation)
Han, K., Ciccotti, M., Roux, S.: Measuring nanoscale stress intensity factors with an atomic force microscope. EPL (Europhys. Lett.) 89(6), 66003 (2010). doi: https://doi.org/10.1209/0295-5075/89/66003
Bergers, L.I.J.C., Hoefnagels, J.P.M., Geers, M.G.D.: Characterization of time-dependent anelastic microbeam bending mechanics. J. Phys. D. Appl. Phys. 47, 1–14 (2014). doi: https://doi.org/10.1088/0022-3727/47/35/355306
Neggers, J., Hoefnagels, J.P.M., Hild, F., Roux, S., Geers, MG.D.: Direct stress-strain measurements from bulged membranes using topography image correlation. Exp. Mech. 54(5), 717–727 (2014). doi: https://doi.org/10.1007/s11340-013-9832-4
Kleinendorst, S.M., Hoefnagels, J.P.M., Fleerakkers, R.C., van Maris, M.P.F.H.L., Cattarinuzzi, E., Verhoosel, C.V., Geers, M.G.D.: Adaptive isogeometric digital height correlation: application to stretchbale electronics. Strain 52(4), 336–354 (2016). doi: https://doi.org/10.1111/str.12189
Luo, P.F., Chao, Y.J., Sutton, M.A., Peters, W.H.: Accurate measurement of three-dimensional deformations in deformable and rigid bodies using computer vision. Exp. Mech. 33(2), 123–132 (1993). doi: https://doi.org/10.1007/BF02322488
Sutton, M.A., Orteu, J.J., Schreier, H.W.: Image Correlation for Shape, Motion and Deformation Measurement: Basis Concepts, Theory and Applications. Springer, Berlin (2009)
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Kleinendorst, S.M., Hoefnagels, J.P.M., Geers, M.G.D. (2018). Mechanical Shape Correlation: A Novel Integrated Digital Image Correlation Approach. In: Lamberti, L., Lin, MT., Furlong, C., Sciammarella, C. (eds) Advancement of Optical Methods in Experimental Mechanics, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-63028-1_8
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DOI: https://doi.org/10.1007/978-3-319-63028-1_8
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