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Numerical simulation of intergranular and transgranular crack propagation in ferroelectric polycrystals
dc.contributor.author | Abdollahi Hosnijeh, Amir |
dc.contributor.author | Arias Vicente, Irene |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III |
dc.date.accessioned | 2011-12-09T12:42:30Z |
dc.date.available | 2011-12-09T12:42:30Z |
dc.date.created | 2011 |
dc.date.issued | 2011 |
dc.identifier.citation | Abdollahi, 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.uri | http://hdl.handle.net/2117/14198 |
dc.description.abstract | We 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.extent | 6 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències |
dc.subject.lcsh | Polycrystals -- Plastic properties |
dc.subject.lcsh | Ferroelectricity -- Mathematical models. |
dc.title | Numerical simulation of intergranular and transgranular crack propagation in ferroelectric polycrystals |
dc.type | Conference report |
dc.subject.lemac | Policristal·lins |
dc.subject.lemac | Ferroelectricitat |
dc.contributor.group | Universitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria |
dc.identifier.dl | 329390/11 |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 5797698 |
dc.description.version | Postprint (author’s final draft) |
local.citation.author | Abdollahi, A.; Arias, I. |
local.citation.contributor | Congreso en Métodos Numéricos em Engenharia |
local.citation.pubplace | Coïmbra |
local.citation.publicationName | Congreso en Métodos Numéricos em Engenharia 2011 |
local.citation.startingPage | 1 |
local.citation.endingPage | 6 |