Abstract
Recently, 3D X-Ray Diffraction (3DXRD) has been proposed as a new tool for experimental granular mechanics. The technique enables measurements of tensor strains of all the individual grain in granular assemblies under load. From the grain-strains, granular stresses can be determined and, in combination with structural information from x-ray tomography, contact forces can be inferred, thereby elucidating force transfer networks in 3D. This paper provides a brief review of the approach and highlights its potential to provide new data on granular mechanics.
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Acknowledgements
The authors acknowledge the European Synchrotron Radiation Facility (ESRF) for synchrotron beamtime. R.C.H. acknowledges support from Lawrence Livermore National Laboratory’s Laboratory Directed Research and Development (LDRD) program under grant 17-LW-009. S.A.H. acknowledges financial support from Vetenskapsrdet, grant no. 729 2015-04398, and from a Marie Curie FP7 integration grant within the 7th European Union Framework Programme. Part of this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344.
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Hall, S.A., Hurley, R.C., Wright, J. (2018). Micromechanics of Granular Media Characterised Using X-Ray Tomography and 3DXRD. In: Giovine, P., Mariano, P., Mortara, G. (eds) Micro to MACRO Mathematical Modelling in Soil Mechanics. Trends in Mathematics. Birkhäuser, Cham. https://doi.org/10.1007/978-3-319-99474-1_17
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DOI: https://doi.org/10.1007/978-3-319-99474-1_17
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