F
François Louchet
Researcher at Centre national de la recherche scientifique
Publications - 88
Citations - 1772
François Louchet is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Dislocation & Creep. The author has an hindex of 21, co-authored 86 publications receiving 1666 citations. Previous affiliations of François Louchet include Grenoble Institute of Technology & École Polytechnique Fédérale de Lausanne.
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Breakdown of avalanche critical behaviour in polycrystalline plasticity
TL;DR: It is shown that polycrystalline plasticity is also characterized by intermittency and dislocation avalanches, and the restraint of large avalanches builds up internal stresses that push temporally the dynamical system into a supercritical state, off the scale-invariant critical regime, and trigger secondary avalanches in neighbouring grains.
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On the critical character of plasticity in metallic single crystals
TL;DR: In this paper, the authors reported acoustic emission (AE) experiments on hcp metallic single crystals and identified drift avalanches in relation with slip and twinning as the only sources of AE.
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Evidence for universal intermittent crystal plasticity from acoustic emission and high-resolution extensometry experiments
Jérôme Weiss,Thiebaud Richeton,François Louchet,František Chmelík,Patrick Dobron,Denis Entemeyer,Mikhail Lebyodkin,T.A. Lebedkina,Claude Fressengeas,Russell J. McDonald +9 more
TL;DR: In this article, the collective dislocation dynamics in various single crystals was investigated using acoustic emission and high-resolution extensometry, and it was shown that the dislocation avalanches are limited in size by a nontrivial finite size effect resulting from the lamellar character of avalanches.
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Dislocation avalanches: Role of temperature, grain size and strain hardening
TL;DR: In this article, the authors investigate the possible incidence of temperature and microstructure on the emerging pattern of the scale-free pattern of an avalanche, and reveal the role of grain boundaries as barriers to dislocation motion hindering the emergence of the scalesafe pattern.
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Directional coarsening of Ni-based superalloys: Computer simulation at the mesoscopic level
TL;DR: In this article, the role of anisotropic misfit relaxation by dislocations generated during creep was modeled and a 3D computer simulation was developed to describe both the morphologies and the kinetics of the phenomenon.