Journal
EXPERIMENTAL MECHANICS
Volume 51, Issue 4, Pages 479-490Publisher
SPRINGER
DOI: 10.1007/s11340-010-9407-6
Keywords
Digital volume correlation; Equilibrium gap method; Regularization
Categories
Funding
- RUPXCUBE Project [ANR-09-BLAN-0009-01]
- ESRF
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Among various correlation techniques to find the displacement field of a volume imaged by X-ray tomography at several deformation states, a new approach is proposed where the displacement is measured down to the voxel scale and determined from a mechanically regularized system using the equilibrium gap method, and an additional boundary regularization. It is shown that even if the underlying material behavior is not very well known, this approach leads to extremely small correlation residuals. An excellent stability of the estimated displacement field for noisy (reconstructed) volumes is also observed.
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