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dc.contributor.authorAbdollahi Hosnijeh, Amir
dc.contributor.authorArias Vicente, Irene
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III
dc.date.accessioned2011-12-09T12:42:30Z
dc.date.available2011-12-09T12:42:30Z
dc.date.created2011
dc.date.issued2011
dc.identifier.citationAbdollahi, A.; Arias, I. Numerical simulation of intergranular and transgranular crack propagation in ferroelectric polycrystals. A: Congreso en Métodos Numéricos em Engenharia. "Congreso en Métodos Numéricos em Engenharia 2011". Coïmbra: 2011, p. 1-6.
dc.identifier.urihttp://hdl.handle.net/2117/14198
dc.description.abstractWe present a phase-field model to simulate intergranular and transgranular crack propagation in ferroelectric polycrystals. The proposed model couples three phase-fields describing (1) the polycrystalline structure, (2) the location of the cracks, and (3) the ferroelectric domain microstructure. Different polycrystalline microstructures are obtained from computer simulations of grain growth. Then, a phase-field model for fracture in ferroelectric single-crystals is extended to polycrystals by incorporating the differential fracture toughness of the bulk and the grain boundaries, and the different crystal orientations of the grains. Our simulation results show intergranular crack propagation in fine-grain microstructures, while transgranular crack propagation is observed in coarse grains. Crack deflection is shown as the main toughening mechanism in the fine-grain structure. Due to the ferroelectric domain switching mechanism, noticeable fracture toughness enhancement is also obtained for transgranular crack propagation. These observations agree with experiment.
dc.format.extent6 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
dc.subject.lcshPolycrystals -- Plastic properties
dc.subject.lcshFerroelectricity -- Mathematical models.
dc.titleNumerical simulation of intergranular and transgranular crack propagation in ferroelectric polycrystals
dc.typeConference report
dc.subject.lemacPolicristal·lins
dc.subject.lemacFerroelectricitat
dc.contributor.groupUniversitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria
dc.identifier.dl329390/11
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac5797698
dc.description.versionPostprint (author’s final draft)
local.citation.authorAbdollahi, A.; Arias, I.
local.citation.contributorCongreso en Métodos Numéricos em Engenharia
local.citation.pubplaceCoïmbra
local.citation.publicationNameCongreso en Métodos Numéricos em Engenharia 2011
local.citation.startingPage1
local.citation.endingPage6


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