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On the temperature independence of statistical model parameters for cleavage fracture in ferritic steels

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On the temperature independence of statistical model parameters for cleavage fracture in ferritic steels

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Nombre: Qian;Lei;Niffenegger ...
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dc.contributor.author Qian, G. es_ES
dc.contributor.author Lei, Wei-Sheng es_ES
dc.contributor.author Niffenegger, Markus es_ES
dc.contributor.author González Albuixech, Vicente Francisco es_ES
dc.date.accessioned 2020-06-02T05:37:25Z
dc.date.available 2020-06-02T05:37:25Z
dc.date.issued 2018-02-06 es_ES
dc.identifier.issn 1478-6435 es_ES
dc.identifier.uri http://hdl.handle.net/10251/144821
dc.description.abstract [EN] The work relates to the effect of temperature on the model parameters in local approaches (LAs) to cleavage fracture. According to a recently developed LA model, the physical consensus of plastic deformation being a prerequisite to cleavage fracture enforces any LA model of cleavage fracture to observe initial yielding of a volume element as its threshold stress state to incur cleavage fracture in addition to the conventional practice of confining the fracture process zone within the plastic deformation zone. The physical consistency of the new LA model to the basic LA methodology and the differences between the new LA model and other existing models are interpreted. Then this new LA model is adopted to investigate the temperature dependence of LA model parameters using circumferentially notched round tensile specimens. With the published strength data as input, finite element (FE) calculation is conducted for elastic-perfectly plastic deformation and the realistic elastic-plastic hardening, respectively, to provide stress distributions for model calibration. The calibration results in temperature independent model parameters. This leads to the establishment of a master curve' characteristic to synchronise the correlation between the nominal strength and the corresponding cleavage fracture probability at different temperatures. This master curve' behaviour is verified by strength data from three different steels, providing a new path to calculate cleavage fracture probability with significantly reduced FE efforts. es_ES
dc.description.sponsorship Guian Qian and Markus Niffenegger are grateful for the financial support of the PROBAB Project by the Swiss Federal Nuclear Safety Inspectorate (ENSI) (DIS-Vertrag Nr. H-100668). es_ES
dc.language Inglés es_ES
dc.publisher Taylor & Francis es_ES
dc.relation.ispartof Philosophical Magazine es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Ferritic steels es_ES
dc.subject Plastic yielding es_ES
dc.subject Cleavage fracture es_ES
dc.subject Statistical model es_ES
dc.subject Temperature effect es_ES
dc.subject Model calibration es_ES
dc.subject.classification INGENIERIA MECANICA es_ES
dc.title On the temperature independence of statistical model parameters for cleavage fracture in ferritic steels es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1080/14786435.2018.1425011 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/ENSI//DIS-Vertrag Nr. H-100668/ es_ES
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials es_ES
dc.description.bibliographicCitation Qian, G.; Lei, W.; Niffenegger, M.; González Albuixech, VF. (2018). On the temperature independence of statistical model parameters for cleavage fracture in ferritic steels. Philosophical Magazine. 98(11):959-1004. https://doi.org/10.1080/14786435.2018.1425011 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1080/14786435.2018.1425011 es_ES
dc.description.upvformatpinicio 959 es_ES
dc.description.upvformatpfin 1004 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 98 es_ES
dc.description.issue 11 es_ES
dc.relation.pasarela S\352911 es_ES
dc.contributor.funder Eidgenössisches Nuklearsicherheitsinspektorat es_ES
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