Failure analysis in railway wheels

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dc.contributor.authorZucarelli, T. A. [UNIFESP]
dc.contributor.authorVieira, M. A.
dc.contributor.authorMoreira Filho, L. A.
dc.contributor.authorReis, D. A. P.
dc.contributor.authorReis, L.
dc.date.accessioned2019-01-21T10:29:45Z
dc.date.available2019-01-21T10:29:45Z
dc.date.issued2016
dc.description.abstractThis work describes an investigation on underground-train wheel failure. In the railway operation, the contact temperature between the wheel and the rail does not usually achieves values over 300 degrees Cen
dc.description.abstractstill, in some situations, such as slide or braking system clamping, the thermal energy is high enough to austenitise the material near the surface. Quick cooling is a consequence of the great volume of the wheel. The thermal affected zone is a core for micro cracks, which grow inside the wheel. The present paper studies a real failure case in the Brazilian underground system, where cracks on the contact surface were evidenced. The mechanical properties were evaluated (mechanical strength, ductility, toughness fracture) and a metallurgical analysis (by light microscopy) was performed in order to understand the real cause for the crack nucleation. The studied wheel was manufactured according to the American standard AAR M-107 (Association of American Railway) specification and the mechanical tests (location of the sample and procedure test) were performed in accordance with BS EN 12626 standard (European Standard). The mechanical results are in accordance to MWL Brasil data base (manufacturing historic) to the same material (AAR Class B 0,5% C). The optical microscopy evidenced the location of the crack origin, and confirmed the overheating region. (C) 2016, PROSTR (Procedia Structural Integrity) Hosting by Elsevier Ltd. All rights reserved.en
dc.description.affiliationUNIFESP, Universidade Federal de São Paulo, Campus São José dos Campos, Av. Talim, 330, 12231-280, Brasil
dc.description.affiliationIDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal
dc.description.affiliationITA, Instituto Tecnológico de Aeronáutica, DCTA São José dos Campos, Praça das Acácias
dc.description.affiliationUnifespUNIFESP, Universidade Federal de São Paulo, Campus São José dos Campos, Av. Talim, 330, 12231-280, Brasil
dc.description.sourceWeb of Science
dc.format.extent212-217
dc.identifierhttps://doi.org/10.1016/j.prostr.2016.02.029
dc.identifier.citationProcedia Structural Integrity, Amsterdam, v. 1, p. 212-217, 2016.
dc.identifier.doi10.1016/j.prostr.2016.02.029
dc.identifier.issn2452-3216
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/49366
dc.identifier.wosWOS:000387291100028
dc.language.isoeng
dc.publisherWiley
dc.relation.ispartofXv Por Conference On Fracture, Pcf 2016
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectFractureen
dc.subjectFailures Analysisen
dc.subjectRailway Wheelsen
dc.subjectThermal Affected Zoneen
dc.titleFailure analysis in railway wheelsen
dc.typeinfo:eu-repo/semantics/conferenceObject
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