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dc.contributor.authorArias Vicente, Irene
dc.contributor.authorSerebrinsky, S
dc.contributor.authorOrtiz, Michael
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III
dc.date.accessioned2010-07-29T14:42:09Z
dc.date.available2010-07-29T14:42:09Z
dc.date.created2006-02
dc.date.issued2006-02
dc.identifier.citationArias, I.; Serebrinsky, S.; Ortiz, M. A phenomenological cohesive model of ferroelectric fatigue. "Acta materialia", Febrer 2006, vol. 54, núm. 4, p. 975-984.
dc.identifier.issn1359-6454
dc.identifier.urihttp://hdl.handle.net/2117/8458
dc.description.abstractWe develop a phenomenological model of electro-mechanical ferroelectric fatigue based on a ferroelectric cohesive law that couples mechanical displacement and electric-potential discontinuity to mechanical tractions and surface-charge density. The ferroelectric cohesive law exhibits a monotonic envelope and loading-unloading hysteresis. The model is applicable whenever the changes in properties leading to fatigue are localized in one or more planar-like regions, modelled by the cohesive surfaces. We validate the model against experimental data for a simple test configuration consisting of an infinite slab acted upon by an oscillatory voltage differential across the slab and otherwise stress free. The model captures salient features of the experimental record including: the existence of a threshold nominal field for the onset of fatigue; the dependence of the threshold on the applied-field frequency; the dependence of fatigue life on the amplitude of the nominal field; and the dependence of the coercive field on the size of the component, or size effect. Our results, although not conclusive, indicate that planar-like regions affected by cycling may lead to the observed fatigue in tetragonal PZT.
dc.format.extent10 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials::Assaig de fractura
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials::Assaig de fatiga
dc.subject.lcshFerroelectricity
dc.subject.lcshMaterials--Fatigue
dc.subject.otherFerroelectricity
dc.subject.otherFatigue
dc.subject.otherFracture
dc.subject.otherNucleation
dc.subject.otherCohesive
dc.titleA phenomenological cohesive model of ferroelectric fatigue
dc.typeArticle
dc.subject.lemacMaterials -- Fatiga
dc.contributor.groupUniversitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria
dc.identifier.doi10.1016/j.actamat.2005.10.035
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.actamat.org/article/S1359-6454(05)00637-3/abstract
dc.rights.accessOpen Access
local.identifier.drac1246871
dc.description.versionPostprint (author's final draft)
local.citation.authorArias, I.; Serebrinsky, S.; Ortiz, M.
local.citation.publicationNameActa materialia
local.citation.volume54
local.citation.number4
local.citation.startingPage975
local.citation.endingPage984


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