Atenção: Todas as denúncias são sigilosas e sua identidade será preservada.
Os campos nome e e-mail são de preenchimento opcional
Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.creator | Godefroid, Leonardo Barbosa | - |
Autor(es): dc.creator | Faria, Geraldo Lúcio de | - |
Autor(es): dc.creator | Cândido, Luiz Cláudio | - |
Autor(es): dc.creator | Viana, Thiago Gomes | - |
Data de aceite: dc.date.accessioned | 2019-11-06T13:34:23Z | - |
Data de disponibilização: dc.date.available | 2019-11-06T13:34:23Z | - |
Data de envio: dc.date.issued | 2015-05-25 | - |
Data de envio: dc.date.issued | 2015-05-25 | - |
Data de envio: dc.date.issued | 2014 | - |
Fonte completa do material: dc.identifier | http://www.repositorio.ufop.br/handle/123456789/5506 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/capes/558397 | - |
Descrição: dc.description | Medium 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.language | en | - |
Direitos: dc.rights | This 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.subject | Rails | - |
Palavras-chave: dc.subject | Flash butt welding | - |
Palavras-chave: dc.subject | Cracking | - |
Título: dc.title | Fatigue failure of a flash butt welded rail. | - |
Aparece nas coleções: | Repositório Institucional - UFOP |
O Portal eduCAPES é oferecido ao usuário, condicionado à aceitação dos termos, condições e avisos contidos aqui e sem modificações. A CAPES poderá modificar o conteúdo ou formato deste site ou acabar com a sua operação ou suas ferramentas a seu critério único e sem aviso prévio. Ao acessar este portal, você, usuário pessoa física ou jurídica, se declara compreender e aceitar as condições aqui estabelecidas, da seguinte forma: