Application of optical methods to investigate the non-linear asymmetric behavior of ceramics exhibiting large strain to rupture by four-points bending test - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of the European Ceramic Society Année : 2012

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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Younès Belrhiti
  • Fonction : Auteur
  • PersonId : 952393
A. Germaneau
  • Fonction : Auteur
P. Doumalin
  • Fonction : Auteur
J.C. Dupré
Arnaud Alzina
  • Fonction : Auteur
  • PersonId : 845746
Octavian Pop
  • Fonction : Auteur
  • PersonId : 922454
Marc Huger
  • Fonction : Auteur
  • PersonId : 872770

Résumé

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
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Dates et versions

hal-01102647 , version 1 (13-01-2015)

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Citer

Younès Belrhiti, A. Gallet-Doncieux, A. Germaneau, P. Doumalin, J.C. Dupré, et al.. Application of optical methods to investigate the non-linear asymmetric behavior of ceramics exhibiting large strain to rupture by four-points bending test. Journal of the European Ceramic Society, 2012, 32 (16), pp.4073-4081. ⟨10.1016/j.jeurceramsoc.2012.06.016⟩. ⟨hal-01102647⟩
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