Title: Impact of lens distortions on strain measurements obtained with 2D digital image correlation
Authors: Lava, Pascal ×
Van Paepegem, Wim
Coppieters, Sam
De Baere, Ives
Wang, Yueqi
Debruyne, Dimitri #
Issue Date: 2013
Publisher: Applied Science Publishers
Series Title: Optics and Lasers in Engineering vol:51 pages:576-584
Abstract: The determination of strain fields based on displacements obtained via digital image
correlation (DIC) at the micro-strain level ( ≤ 1000 μm/m ) is still a cumbersome
task. In particular when high-strain gradients are involved, e.g. in composite materi-
als with multidirectional fibre reinforcement, uncertainties in the experimental setup
and errors in the derivation of the displacement fields can substantially hamper the
strain identification process. In this contribution, the aim is to investigate the im-
pact of lens distortions on strain measurements. To this purpose, we first perform
pure rigid body motion experiments, revealing the importance of precise correction
of lens distortions. Next, a uni-axial tensile test on a textile composite with spatially
varying high strain gradients is performed, resulting in very accurately determined
strains along the fibers of the material.
ISSN: 0143-8166
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Materials Engineering - miscellaneous
Structural Composites and Alloys, Integrity and Nondestructive Testing
Materials Technology TC, Technology Campuses Ghent and Aalst
Technologiecluster Materialentechnologie
× corresponding author
# (joint) last author

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