In-situ (tomography) experiments are generally based on scans reconstructed from a large number of projections acquired under constant deformation of samples. Standard digital volume correlation (DVC) methods are based on a limited number of scans due to acquisition duration. They thus prevent analyses of time-dependent phenomena. In this paper, a modal procedure is proposed that allows time-dependent occurrences to be analyzed. It estimates spacetime displacement fields during the whole loading history. The spatial modes are based on standard DVC, which is subsequently enriched using projection-based digital volume correlation (P-DVC) to measure the temporal amplitudes. The method is applied to two cases, namely, a virtual experiment mimicking wedge splitting and an actual shear test on a pantographic metamaterial inducing large motions. With the proposed method, the temporal amplitude in the real test was measured for each projection leading to a temporal resolution of one tenth of a second and the analysis of 16,400 time steps. For the proposed algorithm, the sensitivity to the acquisition angle of the sample was investigated and measurement uncertainties were assessed.
Revised:
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Published online:
Viktor Kosin 1, 2; Amélie Fau 3; Clément Jailin 4; Benjamin Smaniotto 3; Thomas Wick 2, 3; François Hild 3
CC-BY 4.0
@article{CRMECA_2023__351_G2_265_0,
author = {Viktor Kosin and Am\'elie Fau and Cl\'ement Jailin and Benjamin Smaniotto and Thomas Wick and Fran\c{c}ois Hild},
title = {A projection-based approach to extend digital volume correlation for {4D} spacetime measurements},
journal = {Comptes Rendus. M\'ecanique},
pages = {265--280},
publisher = {Acad\'emie des sciences, Paris},
volume = {351},
year = {2023},
doi = {10.5802/crmeca.192},
language = {en},
}
TY - JOUR AU - Viktor Kosin AU - Amélie Fau AU - Clément Jailin AU - Benjamin Smaniotto AU - Thomas Wick AU - François Hild TI - A projection-based approach to extend digital volume correlation for 4D spacetime measurements JO - Comptes Rendus. Mécanique PY - 2023 SP - 265 EP - 280 VL - 351 PB - Académie des sciences, Paris DO - 10.5802/crmeca.192 LA - en ID - CRMECA_2023__351_G2_265_0 ER -
%0 Journal Article %A Viktor Kosin %A Amélie Fau %A Clément Jailin %A Benjamin Smaniotto %A Thomas Wick %A François Hild %T A projection-based approach to extend digital volume correlation for 4D spacetime measurements %J Comptes Rendus. Mécanique %D 2023 %P 265-280 %V 351 %I Académie des sciences, Paris %R 10.5802/crmeca.192 %G en %F CRMECA_2023__351_G2_265_0
Viktor Kosin; Amélie Fau; Clément Jailin; Benjamin Smaniotto; Thomas Wick; François Hild. A projection-based approach to extend digital volume correlation for 4D spacetime measurements. Comptes Rendus. Mécanique, Volume 351 (2023), pp. 265-280. doi : 10.5802/crmeca.192. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.192/
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