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Experimental characterisation of (localised) deformation phenomena in granular geomaterials from sample down to inter- and intra-grain scales

Hall, Stephen LU ; Desrues, Jacques; Viggiani, Gioacchino; Pierre, Bésuelle and Edward, Andò (2012) In Procedia Iutam 4. p.54-65
Abstract
This paper outlines some recent advances in the full-field experimental characterisation of the mechanics of granular geomaterials (in particular, sands) using a range of methods that provide characterisation at different scales, from the sample-scale down to the inter- and intra-grain scale. The techniques used are “full-field” approaches involving in-situ x-ray micro-tomography, 3D-volumetric digital image analysis/correlation and grain ID-tracking, in-situ 3D x-ray diffraction and in-situ, spatially-resolved neutron diffraction. These methods provide new data on the mechanics of sand at different scales, including continuum measures of strain, porosity, and fabric plus discrete measures of particle kinematics and force transmission. The... (More)
This paper outlines some recent advances in the full-field experimental characterisation of the mechanics of granular geomaterials (in particular, sands) using a range of methods that provide characterisation at different scales, from the sample-scale down to the inter- and intra-grain scale. The techniques used are “full-field” approaches involving in-situ x-ray micro-tomography, 3D-volumetric digital image analysis/correlation and grain ID-tracking, in-situ 3D x-ray diffraction and in-situ, spatially-resolved neutron diffraction. These methods provide new data on the mechanics of sand at different scales, including continuum measures of strain, porosity, and fabric plus discrete measures of particle kinematics and force transmission. The results of such measurements might be used to advance higher-order continuum theories, and provide the necessary input parameters, or to calibrate discrete grain-scale simulations of sand behaviour to explore loading paths that are inaccessible in the laboratory. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Full field characterisation, x-ray tomography, 3D image analysis, digital volume correlation, x-ray & neutron diffraction
in
Procedia Iutam
volume
4
pages
54 - 65
publisher
Elsevier
external identifiers
  • wos:000314770900007
  • scopus:84867479682
ISSN
2210-9838
DOI
10.1016/j.piutam.2012.05.007
language
English
LU publication?
yes
id
6e745114-dc98-4fa0-a0fb-30064fe89521 (old id 3164443)
date added to LUP
2012-11-13 12:06:06
date last changed
2017-10-22 03:58:32
@article{6e745114-dc98-4fa0-a0fb-30064fe89521,
  abstract     = {This paper outlines some recent advances in the full-field experimental characterisation of the mechanics of granular geomaterials (in particular, sands) using a range of methods that provide characterisation at different scales, from the sample-scale down to the inter- and intra-grain scale. The techniques used are “full-field” approaches involving in-situ x-ray micro-tomography, 3D-volumetric digital image analysis/correlation and grain ID-tracking, in-situ 3D x-ray diffraction and in-situ, spatially-resolved neutron diffraction. These methods provide new data on the mechanics of sand at different scales, including continuum measures of strain, porosity, and fabric plus discrete measures of particle kinematics and force transmission. The results of such measurements might be used to advance higher-order continuum theories, and provide the necessary input parameters, or to calibrate discrete grain-scale simulations of sand behaviour to explore loading paths that are inaccessible in the laboratory.},
  author       = {Hall, Stephen and Desrues, Jacques and Viggiani, Gioacchino and Pierre, Bésuelle and Edward, Andò},
  issn         = {2210-9838},
  keyword      = {Full field characterisation,x-ray tomography,3D image analysis,digital volume correlation,x-ray & neutron diffraction},
  language     = {eng},
  pages        = {54--65},
  publisher    = {Elsevier},
  series       = {Procedia Iutam},
  title        = {Experimental characterisation of (localised) deformation phenomena in granular geomaterials from sample down to inter- and intra-grain scales},
  url          = {http://dx.doi.org/10.1016/j.piutam.2012.05.007},
  volume       = {4},
  year         = {2012},
}