Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1806827 | Magnetic Resonance Imaging | 2010 | 9 Pages |
Abstract
The rheology of granular materials near an interface is investigated through proton magnetic resonance imaging. A new cylinder shear apparatus has been inserted in the magnetic resonance imaging device, which allows the control of the radial confining pressure exerted by the outer wall on the grains and the measurement of the torque on the inner shearing cylinder. A multi-layer velocimetry sequence has been developed for the simultaneous measurement of velocity profiles in different sample zones, while the measurement of the solid fraction profile is based on static imaging of the sample. This study describes the influence of the roughness of the shearing interface and of the transverse confining walls on the granular interface rheology.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Pascal Moucheront, François Bertrand, Georg Koval, Laurent Tocquer, Stéphane Rodts, Jean-Noël Roux, Alain Corfdir, François Chevoir,