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Pré-Publication, Document De Travail Année : 2003

Anisotropy of grain boundaries in crystals: a new measurement technique applied to polar ice

Résumé

To analyse a polycrystalline material which has undergonemechanical sollicitations, we quantify the deformationof grain boundaries. Weinvestigate a pattern which recordspast deformations: a deep ice core, in Dome Concordia, Antarctica.Its ice microstructure (grain boundaries) is a key feature useful tostudy ice evolution and to investigate climatic changes. Ourmethod extracts quantitative physical information, such as theanisotropy and the local heterogeneity of the deformation. Thisleads to a re-examination of current models used in datation. Themethod also applies to extract quantitative geometricalinformation from other cellular patterns, ranging from metal processing and biologicaltissues to foams and granular matter.
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Dates et versions

hal-00000573 , version 1 (03-09-2003)
hal-00000573 , version 2 (29-04-2004)
hal-00000573 , version 3 (22-07-2004)

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Gaël Durand, François Graner, Jérôme Weiss. Anisotropy of grain boundaries in crystals: a new measurement technique applied to polar ice. 2003. ⟨hal-00000573v1⟩
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