LE BARBENCHON, Louise; GIRARDOT, Jeremie; KOPP, Jean-Benoit; VIOT, Philippe

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

LE BARBENCHON, Louise

GIRARDOT, Jeremie

KOPP, Jean-Benoit

Langue

Article de revue

Ce document a été publié dans

Materialia. 2019-03, vol. 5, p. 100219

Elsevier

Résumé en anglais

This study focuses on the microstructural aspects of a cork-based by-product known as agglomerated cork and its influence on the compressive mechanical behaviour. The material consists in granulates of a natural polymeric foam - cork - mixed together with a small quantity of a bio-sourced resin. Optical and scanning electron microscopy (SEM) are first used to investigate on the bead geometry and placement and interfaces arrangement. Then X-ray computed tomography allows to study the spatial arrangement of agglomerated cork microstructure and hence to complete and confirm 2D observations. 2D and 3D observations show a transverse anisotropic material which is confirmed by the mechanical tests. SEM pictures demonstrate an intricate and heterogeneous material. Microtomography confirms the presence of macroporosities between cork granulates having a mean volume around 0.1 mm 3 . Cork cell specific geometry is also confirmed. The volume of those cells lies around 10 −5 mm 3 . Finally quasi-static compression tests are run to establish a link between microstructure and mechanical behaviour thanks to digital image correlation (DIC). Cork agglomerate demonstrates strong strain localisation at its surface caused by its multi-scale structure.< Réduire

Mots clés en anglais

Multi-scale microstructure

Cellular material

Cork agglomerate

X-ray microtomography

Mechanical behaviour

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Multi-scale foam : 3D structure/compressive behaviour relationship of agglomerated cork

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

Origine

Unités de recherche