Characterization of shear and compaction bands in sandstone using x-ray tomography and 3D digital image correlation

Elli-Maria Christodoulos Charalampidou, Stephen Alexander Hall, S Stanchits, G Viggiani, Margaret Helen Lewis

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)peer-review

6 Citations (Scopus)

Abstract

In this work we employ x-ray tomography, 3D digital image analysis and 3D-volumetric digital image correlation techniques to characterize localized deformation phenomena in sandstone. The specimens considered have been deformed in triaxial compression under a range of confining pressures (20-190MPa). Shear or compaction bands were observed, at low and higher confinement respectively. X-ray tomography images have been acquired before and after loading (unconfined) at different spatial resolutions (30 and 90 µm voxel size). The combination of both x-ray tomography and 3D DIC provides insights into the geometry and mechanisms of the localized features.
Original languageEnglish
Title of host publicationAdvances in computer tomography for geomaterials
Subtitle of host publicationGeoX 2010
EditorsAllen H. Reed, Khalid A. Alshibli
Place of PublicationLondon
PublisherWiley
Pages59-66
Number of pages8
ISBN (Electronic)9781118557723
ISBN (Print)978-1-84821-179-7, 1-84821-179-1
DOIs
Publication statusPublished - Feb 2010
Event3rd International Workshop on X-Ray CT for Geomaterials - New Orleans, United States
Duration: 28 Feb 20103 Mar 2010

Conference

Conference3rd International Workshop on X-Ray CT for Geomaterials
Abbreviated titleGeoX 2010
Country/TerritoryUnited States
CityNew Orleans
Period28/02/103/03/10

Keywords

  • sandstone
  • Localization
  • Shear bands
  • Compaction bands
  • X-ray tomography
  • 3D digital image correlation

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