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Experimental micro-mechanics of granular media studied by x-ray tomography: Recent results and challenges

Andò, E.; Viggiani, G.; Hall, Stephen LU and Desrues, J. (2013) In Geotechnique Letters 3(JULY/SEPT). p.142-146
Abstract
Combining x-ray tomography and three-dimensional (3D) image analysis has finally opened the way for experimental micro-(geo)mechanics, allowing access to different scales of interest. When these correspond to a scale that has been imaged at high spatial resolution, high-quality measurements can be obtained (e.g. 3D displacements and rotations of individual grains of sand sample under load). However, there are issues when the scale of interest is smaller, for example the characterisation of grain-to-grain contacts (their orientations and evolution) or production of fines by grain breakage. This paper presents a short selection of new grain-scale measurements obtained using existing techniques. The challenges associated with smaller scale... (More)
Combining x-ray tomography and three-dimensional (3D) image analysis has finally opened the way for experimental micro-(geo)mechanics, allowing access to different scales of interest. When these correspond to a scale that has been imaged at high spatial resolution, high-quality measurements can be obtained (e.g. 3D displacements and rotations of individual grains of sand sample under load). However, there are issues when the scale of interest is smaller, for example the characterisation of grain-to-grain contacts (their orientations and evolution) or production of fines by grain breakage. This paper presents a short selection of new grain-scale measurements obtained using existing techniques. The challenges associated with smaller scale measurements on the same images are also discussed through a few examples from ongoing work. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Geotechnique Letters
volume
3
issue
JULY/SEPT
pages
142 - 146
publisher
ICE Publishing Ltd.
external identifiers
  • wos:000330616300003
  • scopus:84888230974
ISSN
2049-825X
DOI
10.1680/geolett.13.00036
language
English
LU publication?
yes
id
0ca45566-e0b2-4c62-a915-fae8a7a8dce5 (old id 4247312)
date added to LUP
2014-01-13 18:03:26
date last changed
2019-03-12 02:03:44
@article{0ca45566-e0b2-4c62-a915-fae8a7a8dce5,
  abstract     = {Combining x-ray tomography and three-dimensional (3D) image analysis has finally opened the way for experimental micro-(geo)mechanics, allowing access to different scales of interest. When these correspond to a scale that has been imaged at high spatial resolution, high-quality measurements can be obtained (e.g. 3D displacements and rotations of individual grains of sand sample under load). However, there are issues when the scale of interest is smaller, for example the characterisation of grain-to-grain contacts (their orientations and evolution) or production of fines by grain breakage. This paper presents a short selection of new grain-scale measurements obtained using existing techniques. The challenges associated with smaller scale measurements on the same images are also discussed through a few examples from ongoing work.},
  author       = {Andò, E. and Viggiani, G. and Hall, Stephen and Desrues, J.},
  issn         = {2049-825X},
  language     = {eng},
  number       = {JULY/SEPT},
  pages        = {142--146},
  publisher    = {ICE Publishing Ltd.},
  series       = {Geotechnique Letters},
  title        = {Experimental micro-mechanics of granular media studied by x-ray tomography: Recent results and challenges},
  url          = {http://dx.doi.org/10.1680/geolett.13.00036},
  volume       = {3},
  year         = {2013},
}