X-ray micro CT for studying strain localization in clay rocks under triaxial compression
Résumé
The paper presents selected results from an experimental testing program recently performed at the ESRF, where high resolution, fast X-ray micro tomography was used to evaluate the onset and evolution of strain localization in Callovo-Oxfordian argillite under deviatoric loading. In situ micro tomography allowed detailed observations of strain localization at different load levels. X-ray CT was complimented with 3D digital image correlation to obtain a sequence of incremental 3D strain fields of a deforming specimen.
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