1. Aging of a granular pile induced by thermal cycling
- Author
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Thibaut Divoux, Ion Vassilief, Hervé Gayvallet, Jean-Christophe Géminard, Masami Nakagawa, Stefan Luding, Laboratoire de Physique de l'ENS Lyon (Phys-ENS), École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Nakagawa, Masami, Luding, Stefan, École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Materials science ,FOS: Physical sciences ,Temperature cycling ,Condensed Matter - Soft Condensed Matter ,Granular material ,01 natural sciences ,010305 fluids & plasmas ,Granular compaction ,Thermal conductivity ,0103 physical sciences ,Thermal ,Composite material ,010306 general physics ,Heap (data structure) ,Condensed Matter - Materials Science ,Thermal cycling ,Materials Science (cond-mat.mtrl-sci) ,Condensed Matter::Soft Condensed Matter ,Ageing ,Amplitude ,Creep ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,Soft Condensed Matter (cond-mat.soft) ,Thermal expansion ,Pile ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] - Abstract
Here we show that variations of temperature, even of a few degrees in amplitude, induce the ageing of a granular pile. In particular, we report measurements of physical properties of a granular heap submitted to thermal cycles. Namely, we focus on the evolution of the thermal linear-expansion coefficient and of the thermal conductivity of the pile with the number of cycles. The present contribution nicely supplements a recent article we published elsewhere [Phys. Rev. Lett. \textbf{101}, 148303 (2008)] and introduces a different and promising method to impose temperature cycles to a granular pile., 4 pages, 5 figures, Proceeding of the Powders and Grains conference 2009, Golden (Colorado)
- Published
- 2009
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