Fatigue strength of tungsten inert gas-repaired weld joints in airplane critical structures

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorNascimento, Marcelino P.
dc.creatorVoorwald, Herman Jacobus Cornelis
dc.creatorPayao Filho, Joao da C.
dc.date2014-05-20T13:28:26Z
dc.date2014-05-20T13:28:26Z
dc.date2011-06-01
dc.date.accessioned2017-04-05T20:11:23Z
dc.date.available2017-04-05T20:11:23Z
dc.identifierJournal of Materials Processing Technology. Lausanne: Elsevier B.V. Sa, v. 211, n. 6, p. 1126-1135, 2011.
dc.identifier0924-0136
dc.identifierhttp://hdl.handle.net/11449/9459
dc.identifier10.1016/j.jmatprotec.2011.01.016
dc.identifierWOS:000289595900020
dc.identifierWOS000289595900020.pdf
dc.identifierhttp://dx.doi.org/10.1016/j.jmatprotec.2011.01.016
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/857622
dc.descriptionIn this work the effect of Gas Tungsten Arc Welding (GTAW) repairs on the axial fatigue strength of an AISI 4130 steel welded joint used in airframe critical to the flight-safety was investigated. Fatigue tests were performed at room temperature on 0.89 mm thick hot-rolled plates with constant amplitude and load ratio of R = 0.1, at 20 Hz frequency. Monotonic tensile tests, optical metallography and microhardness, residual stress and weld geometric factors measurements were also performed. The fatigue strength decreased with the number of GTAW repairs, and was related to microstructural and microhardness changes, as well as residual stress field and weld profile geometry factors, which gave origin to high stress concentration at the weld toe. (C) 2011 Elsevier B.V. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V. Sa
dc.relationJournal of Materials Processing Technology
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAISI 4130 aeronautical steel
dc.subjectRepair welding
dc.subjectWeld metal and HAZ
dc.subjectMicrostructure
dc.subjectWeld geometry
dc.subjectFlight-safety
dc.titleFatigue strength of tungsten inert gas-repaired weld joints in airplane critical structures
dc.typeOtro


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