Journal
JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN
Volume 48, Issue 5, Pages 330-343Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0309324713482457
Keywords
Equilibrium gap; full-field measurements; regularization; resolution; T3 elements
Funding
- Region Ile-de-France
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By construction, digital image correlation is an ill-posed problem. To circumvent this difficulty, regularization is often performed implicitly through the kinematic basis chosen to express the sought displacement fields. Conversely, a priori information on the mechanical behavior of the studied material is often available. It is proposed to evaluate the gain to be expected from such a mechanical assistance, namely, the measured displacement not only satisfies as best as possible the gray-level conservation but also mechanical admissibility.
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