Fatigue failure of a flash butt welded rail.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorGodefroid, Leonardo Barbosa-
Autor(es): dc.creatorFaria, Geraldo Lúcio de-
Autor(es): dc.creatorCândido, Luiz Cláudio-
Autor(es): dc.creatorViana, Thiago Gomes-
Data de aceite: dc.date.accessioned2019-11-06T13:34:23Z-
Data de disponibilização: dc.date.available2019-11-06T13:34:23Z-
Data de envio: dc.date.issued2015-05-25-
Data de envio: dc.date.issued2015-05-25-
Data de envio: dc.date.issued2014-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/5506-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/558397-
Descrição: dc.descriptionMedium carbon steel rails are commonly jointed by means of a flash butt welding procedure. To ensure an adequate service life for the structural component commonly subjected to fatigue loading, a rigorous quality control should be performed, both in welding parameters and in the surface quality of the welded joint. This work investigated the cause of a recurrent failure in a railway, with cracking always initiated in the rail in the region of the welded joint. All standard procedures of failure analysis were applied, with a careful assessment of the material characteristics and the fractured surface. It was concluded that fatigue cracks initiated near the weld bead and spread in a brittle mode, leading to premature fracture of the material. An in-depth analysis of the early cracks showed that the surface finishing of the weld bead was not appropriate, generating undesirable stress concentration. A recommendation to change the procedure of surface finishing of welded joint was held, aiming to decrease the number of accidents on the railway line.-
Idioma: dc.languageen-
Direitos: dc.rightsThis article is published under the terms of the Creative Commons Attribution-NonCommercial-No Derivatives License (CC BY NC ND). For non-commercial purposes you may distribute and copy the article , without permission from Elsevier. The original work must always be appropriately credited. Fonte: Rigthslink <https://s100.copyright.com/AppDispatchServlet>. Acesso em: 14 abr. 2015.-
Palavras-chave: dc.subjectRails-
Palavras-chave: dc.subjectFlash butt welding-
Palavras-chave: dc.subjectCracking-
Título: dc.titleFatigue failure of a flash butt welded rail.-
Aparece nas coleções:Repositório Institucional - UFOP

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