Application of optical methods to investigate the non-linear asymmetric behavior of ceramics exhibiting large strain to rupture by four-points bending test

Younès Belrhiti; A. Gallet-Doncieux; A. Germaneau; P. Doumalin; J.C. Dupre; Arnaud Alzina; Philippe Michaud; Octavian Pop; Marc Huger; Thierry Chotard

Application of optical methods to investigate the non-linear asymmetric behavior of ceramics exhibiting large strain to rupture by four-points bending test

Younès Belrhiti ¹ A. Gallet-Doncieux ² A. Germaneau ³ P. Doumalin ³ J.C. Dupre ³ Arnaud Alzina ² Philippe Michaud ² Octavian Pop ² Marc Huger ¹ Thierry Chotard ^{1, *}

* Auteur correspondant

1 Axe 1 : procédés céramiques

SPCTS - Science des Procédés Céramiques et de Traitements de Surface

2 GEMH - Groupe d'Etudes des Matériaux Hétérogènes

3 PPRIME - Institut Pprime

Abstract : Large strain to rupture behavior is essential, for refractory materials, to improve their thermal shock resistance. The non-linear comportment under loading of specific developed ceramics associated to their type of microstructure (micro-cracked) leads to the possibility to increase their strain-to-rupture level. Aluminum titanate (AT: Al 2TiO 5) ceramics are one of these materials and are characterized by a mechanical behavior strongly dependent on their microstructure. Indeed, this behavior can vary from a fragile one to a large non-linear one according to the degree of microcracking present within the material. The paper here presented is devoted to the study of this nonlinear behavior thanks to four-points bending test associated with digital image correlation technique to determine kinematics fields. Results highlight the asymmetric character of the mechanical behavior of a microcracked aluminum titanate. A comparison between the Young moduli and fracture strength obtained using conventional and ones identified by digital image correlation will be done

Keywords : Refractories Mechanical properties Digital image correlation Strength Al 2TiO 5

Type de document :

Article dans une revue

Domaine :

Sciences de l'ingénieur [physics] / Matériaux

Sciences de l'ingénieur [physics] / Mécanique [physics.med-ph] / Mécanique des matériaux [physics.class-ph]

Liste complète des métadonnées

https://hal-unilim.archives-ouvertes.fr/hal-01102647
Contributeur : Thierry Chotard <>
Soumis le : mardi 13 janvier 2015 - 11:56:23
Dernière modification le : vendredi 27 septembre 2019 - 17:44:08

Application of optical methods to investigate the non-linear asymmetric behavior of ceramics exhibiting large strain to rupture by four-points bending test

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Application of optical methods to investigate the non-linear asymmetric behavior of ceramics exhibiting large strain to rupture by four-points bending test

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