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Article Dans Une Revue Granular Matter Année : 2014

A biaxial apparatus for the study of heterogeneous and intermittent strains in granular materials

Résumé

We present an experimental apparatus specifically designed to investigate the precursors of failure in granular materials. A sample of granular material is placed between a latex membrane and a glass plate. A confining effective pressure is applied by applying vacuum to the sample. Displacement-controlled compression is applied in the vertical direction, while the specimen deforms in plane strain. A Diffusing Wave Spectroscopy visualization setup gives access to the measurement of deformations near the glass plate. After describing the different parts of this experimental setup, we present a demonstration experiment where extremely small (of order $10^{-5}$) heterogeneous strains are measured during the loading process.

Dates et versions

hal-00935425 , version 1 (23-01-2014)

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Antoine Le Bouil, Axelle Amon, Jean-Christophe Sangleboeuf, Hervé Orain, Pierre Bésuelle, et al.. A biaxial apparatus for the study of heterogeneous and intermittent strains in granular materials. Granular Matter, 2014, 16, pp.1-8. ⟨10.1007/s10035-013-0477-x⟩. ⟨hal-00935425⟩
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