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Article Dans Une Revue Scripta Materialia Année : 2016

Strength of hierarchically porous ceramics: Discrete simulations on X-ray nanotomography images

Résumé

Porous ceramic samples were processed either by freeze-casting or by slip-casting with pore formers. They were partially sintered to obtain a total porosity in between 44 and 69%. Samples were imaged by X-ray nanotomography with 75 nm resolution. The images, approximately 70(3) to 90(3) mu m(3) in size, were merged with randomly packed particles to obtain representative numerical microstructures. The numerical samples were crushed uniaxially using discrete element simulations with appropriate microscopic fracture properties. This revealed anisotropic behavior for freeze-cast samples. Simulated strength values were compared to experimental data, with some consideration given to sample volume. (C) 2015 Elsevier Ltd. All rights reserved

Domaines

Matériaux

Dates et versions

hal-01381870 , version 1 (14-10-2016)

Identifiants

Citer

Denis Roussel, Aaron Lichtner, David Jauffrès, Julie Villanova, Rajendra K. Bordia, et al.. Strength of hierarchically porous ceramics: Discrete simulations on X-ray nanotomography images. Scripta Materialia, 2016, 113, pp.250 - 253. ⟨10.1016/j.scriptamat.2015.11.015⟩. ⟨hal-01381870⟩
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