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Ultrafast ultrasonic imaging of dynamic sliding friction in soft solids: The slow slip and the super-shear regimes

Soumaya Latour 1 Thomas Gallot 1, 2 Stefan Catheline 1 Christophe Voisin 3 François Renard 4 Eric Larose 5 Michel Campillo 5
3 Cycle sismique et déformations transitoires [?-2015]
ISTerre [2011-2015] - Institut des Sciences de la Terre [2011-2015]
4 Mécanique des failles [?-2015]
ISTerre [2011-2015] - Institut des Sciences de la Terre [2011-2015]
5 Ondes et Structures [?-2015]
ISTerre [2011-2015] - Institut des Sciences de la Terre [2011-2015]
Abstract : Ultrafast ultrasonic speckle interferometry, an imaging technique derived from elastography, is used to follow the dynamic of the interface failure in a friction experiment. Experimental results that characterise two slipping regimes are presented: a slow slip regime associated with depinning events at the interface and a supershear rupture regime associated with the emission of Mach waves fronts. These results are discussed in the light of geophysical observations made at the scale of the Earth on the slip dynamics in active faults.
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https://hal-insu.archives-ouvertes.fr/insu-00680835
Contributor : Pascale Talour <>
Submitted on : Tuesday, March 20, 2012 - 11:33:41 AM
Last modification on : Monday, July 20, 2020 - 10:58:02 AM

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Soumaya Latour, Thomas Gallot, Stefan Catheline, Christophe Voisin, François Renard, et al.. Ultrafast ultrasonic imaging of dynamic sliding friction in soft solids: The slow slip and the super-shear regimes. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2011, 96 (5), pp.59003. ⟨10.1209/0295-5075/96/59003⟩. ⟨insu-00680835⟩

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