Non-contact stress measurement in granular materials via neutron and x-ray diffraction: theoretical foundations

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dc.contributor.authorWensrich, CMen_AU
dc.contributor.authorKisi, EHen_AU
dc.contributor.authorLuzin, Ven_AU
dc.date.accessioned2013-10-10T05:53:40Zen_AU
dc.date.available2013-10-10T05:53:40Zen_AU
dc.date.issued2013-06-01en_AU
dc.date.statistics2013-10-10en_AU
dc.description.abstractModel validation remains a serious problem within the field of computational granular materials research. In all cases the rigor of the validation process is entirely dependent on the quality and depth of the experimental data that forms the point of comparison. Neutron and X-ray diffraction methods offer the only quantitative non-contact method for determining the spatially resolved triaxial stress field within granular materials under load. Measurements such as this can provide an unprecedented level of detail that will be invaluable in validating many models. In this paper the theoretical foundation underpinning diffraction-based strain measurements, their conversion to local stress in the particles and ultimately into the bulk stress field is developed. Effects such as elastic anisotropy within the particles of the granular material, particle plasticity and locally inhomogeneous stress distribution are shown to not offer any obstacles to the method and a detailed treatment of the calculation of the bulk stresses from the particle stresses is given. © 2013, Springer.en_AU
dc.identifier.citationWensrich, C. M., Kisi, E. H., & Luzin, V. (2013). Non-contact stress measurement in granular materials via neutron and x-ray diffraction: theoretical foundations. Granular Matter, 15(3), 275-286. doi:10.1007/s10035-013-0416-xen_AU
dc.identifier.govdoc5082en_AU
dc.identifier.issn1434-5021en_AU
dc.identifier.issue3en_AU
dc.identifier.journaltitleGranular Matteren_AU
dc.identifier.pagination275-286en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4786en_AU
dc.identifier.urihttps://doi.org/10.1007/s10035-013-0416-xen_AU
dc.identifier.volume15en_AU
dc.language.isoenen_AU
dc.publisherSpringeren_AU
dc.subjectNeutron diffractionen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectGranular materialsen_AU
dc.subjectParticlesen_AU
dc.subjectValidationen_AU
dc.subjectAnisotropyen_AU
dc.titleNon-contact stress measurement in granular materials via neutron and x-ray diffraction: theoretical foundationsen_AU
dc.typeJournal Articleen_AU
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