Digital Volume Correlation Applied to X-ray Micro-Tomography Images in Uniaxial Creep Tests on Anisotropic Clayey Rock
Source abstract
Abstract
Creep tests are commonly performed to characterize time-dependent deformation of geological materials. Classical measuring methods are not suitable for long term tests and not able to provide full three-dimensional strain fields. In this study, Digital Volume Correlation (DVC) is applied to X-ray micro-tomography (XRMT) images from creep tests on a hard clayey rock. In situ uniaxial compression creep tests are performed under different levels of stress and with different loading orientations with respect to the structural anisotropy of rock. Based on the XRMT images taken during the creep tests, DVC is applied to compute the full three dimensional strain fields and global averages strains of tested samples. The effects of bedding planes and hard inclusions on the non-uniform distribution of strains are analyzed.
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Research context
OpenAlex topics: Rock Mechanics and Modeling · Mineral Processing and Grinding · Tunneling and Rock Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
LaMcube—Laboratoire de Mécanique Multiphysique et Multiéchelle, Univ. Lille, CNRS, Centrale Lille, UMR9013, F-59000 Lille, France
Andra, 92298 Chatenay Malabry, France
Department of Structural Geotechnical and Building Engineering, Politecnico di Torino, 10138 Torino, Italy
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