How heat controls fracture: the thermodynamics of creeping and avalanching cracks

Autor: Loïc Vanel, Alain Cochard, Renaud Toussaint, Knut Jørgen Måløy, Lamine Hattali, Tom Vincent-Dospital, Eirik Grude Flekkøy, Daniel Bonamy, Stéphane Santucci

Publikováno v: Soft Matter
Soft Matter, 2020, 16 (41), pp.9590-9602. ⟨10.1039/D0SM01062F⟩
Soft Matter, Royal Society of Chemistry, 2020, 16 (41), pp.9590-9602. ⟨10.1039/d0sm010⟩
Soft Matter, Royal Society of Chemistry, 2020, ⟨10.1039/D0SM01062F⟩

While of paramount importance in material science, the dynamics of cracks still lacks a complete physical explanation. The transition from their slow creep behavior to a fast propagation regime is a notable key, as it leads to full material failure i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68ee42ce918f4ecf5197a0168d5607e0
https://doi.org/10.1039/d0sm01062f

Dilation as a precursor in a continuous granular fault

Autor: Knut Jørgen Måløy, Victor Levy dit Vehel, Takahiro Hatano, Loïc Vanel, O. Ramos

Publikováno v: EPJ Web of Conferences, Vol 249, p 15006 (2021)

We analyze the dilation of the system in a cylindrical granular fault consisting of one single layer of disks submitted to both normal pressure and continuous and slow shear, which results in intermittent and sudden energy release events that reprodu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e550c9ecf701d207d841569ba3b601b8
https://www.epj-conferences.org/articles/epjconf/pdf/2021/03/epjconf_pg2021_15006.pdf

Continuously Sheared Granular Matter Reproduces in Detail Seismicity Laws

Autor: Ramon Planet, Sébastien Lherminier, Knut Jørgen Måløy, Loïc Vanel, O. Ramos, V. Levy dit Vehel, Gilles Simon

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2019, 122 (21), pp.218501. ⟨10.1103/PhysRevLett.122.218501⟩

International audience; We introduce a shear experiment that quantitatively reproduces the main laws of seismicity. By continuously and slowly shearing a compressed monolayer of disks in a ringlike geometry, our system delivers events of frictional f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7481f0c06751f6a5b47838577b8dc2e
https://hal-univ-lyon1.archives-ouvertes.fr/hal-02367961

A new test method to simulate low-severity wear conditions experienced by rubber tire materials

Autor: Jean-Luc Loubet, Thomas Chaussée, Matthieu Guibert, Jean Thevenet, Caroline Fayolle, Loïc Vanel, Paul Sotta, Laurent Guy, Huang Menglong

Publikováno v: Wear
Wear, Elsevier, 2018, 410-411, pp.72-82. ⟨10.1016/j.wear.2018.06.004⟩

International audience; An innovative rotary tribometer was developed in order to reproduce the abrasive wear of reinforced rubber materials for tire. The device allows performing accelerated, quantitative friction and wear tests which mimic real usa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f01b89af1531a87eedc5c37437b5cf5
https://hal.archives-ouvertes.fr/hal-02389813

Physical Mechanisms of Fatigue in Neat Polyamide 6,6

Autor: Loïc Vanel, Didier R. Long, Paul Sotta, Cyrille Rochas, Elodie Mourglia-Seignobos, Ludovic Odoni

Publikováno v: Macromolecules
Macromolecules, American Chemical Society, 2014, pp.3880-3894. ⟨10.1021/ma500256x⟩

The fatigue durability of polyamide 6,6 has been studied for various maximal stresses. We focus on the identification of the microscopic mechanisms responsible for damaging in fatigue regime. We show that the apparent stiffness, or dynamic modulus, d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37c60924ef761155e7998784d3baa9ac
https://doi.org/10.1021/ma500256x