000015289 001__ 15289
000015289 005__ 20161115100217.0
000015289 04107 $$aeng
000015289 046__ $$k2016-08-21
000015289 100__ $$aBornert, Michel
000015289 24500 $$aExperimental investigation of grain boundary sliding in polycrystalline halite

000015289 24630 $$n24.$$p24th International Congress of Theoretical and Applied Mechanics - Book of Papers
000015289 260__ $$bInternational Union of Theoretical and Applied Mechanics, 2016
000015289 506__ $$arestricted
000015289 520__ $$2eng$$aDeformation mechanisms of synthetic halite are investigated at the scale of its polycrystalline microstructure. Both crystal slip plasticity, associated with several slip systems with contrasted critical resolved shear stresses, and grain boundary sliding are observed during in situ compression tests inside the chamber of a scanning electron microscope (SEM). Specific digital image correlation tools provide access to a quantification of the relative contribution of both mechanims to the overall strain of the sample and show that grain boundary sliding is present from the beginning of plasticity, establishing that plastic deformation of such a rock is not possible without simultaneous damage. These surface measurements are complemented with full 3D investigations based on computed X-rays absorption tomography and digital volume correlation, performed on samples that are also investigated in the SEM. Obtained data provide a way to compare the statistics of local fields in the bulk of samples and near free surfaces.

000015289 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015289 653__ $$a

000015289 7112_ $$a24th International Congress of Theoretical and Applied Mechanics$$cMontreal (CA)$$d2016-08-21 / 2016-08-26$$gICTAM2016
000015289 720__ $$aBornert, Michel
000015289 8560_ $$ffischerc@itam.cas.cz
000015289 8564_ $$s42997$$uhttps://invenio.itam.cas.cz/record/15289/files/TS.SM08-2.02.pdf$$yOriginal version of the author's contribution as presented on CD,  page 2302, code TS.SM08-2.02
.
000015289 962__ $$r13812
000015289 980__ $$aPAPER