Repair Welding Effects on the Bending Fatigue Strength of AISI 4130 Aeronautical Steel used in a Critical to the Flight-Safety Structure

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorNascimento, M. P.
dc.creatorVoorwald, Herman Jacobus Cornelis
dc.creatorFilho, J. C. P.
dc.creatorPereira, C. P. M.
dc.date2014-05-20T13:28:18Z
dc.date2014-05-20T13:28:18Z
dc.date2010-01-01
dc.date.accessioned2017-04-05T20:11:00Z
dc.date.available2017-04-05T20:11:00Z
dc.identifierAdvanced Materials Forum V, Pt 1 and 2. Stafa-zurich: Trans Tech Publications Ltd, v. 636-637, p. 1451-1458, 2010.
dc.identifier0255-5476
dc.identifierhttp://hdl.handle.net/11449/9411
dc.identifier10.4028/www.scientific.net/MSF.636-637.1451
dc.identifierWOS:000280763200218
dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/MSF.636-637.1451
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/857575
dc.descriptionThe aim of this study was to analyze the effect of successive TIG (tungsten inert gas) welding repairs on the reverse bending fatigue strength of AISI 4130 steel, which is widely used in components critical to the flight-safety. In order to simulate the abrupt maneuvers, wind bursts, motor vibration and helixes efforts, which generate cyclic bending loadings at the welded joints of a specific aircraft component called motor cradle, experimental reverse bending fatigue tests were carried out on specimens made from hot-rolled steel plate, 1.10 mm (0.043 in) thick, by mean of a SCHENK PWS equipment, with load ratio R = -1, under constant amplitude, at 30 Hz frequency and room temperature. It was observed that the bending fatigue strength decreases after the TIG (Tungsten Inert Gas) welding process application on AISI 4130 steel, with subsequent decrease due to re-welding sequence as well. Microstructural analyses and microhardness measurements on the base material, heat-affected zone (HAZ) and weld metal, as well as the effects of the weld bead geometry on the obtained results, have complemented this study.
dc.languageeng
dc.publisherTrans Tech Publications Ltd
dc.relationAdvanced Materials Forum V, Pt 1 and 2
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectFatigue
dc.subjectAISI 4130 steel
dc.subjectWelding repairs on aeronautic structures
dc.subjectGTAW process
dc.titleRepair Welding Effects on the Bending Fatigue Strength of AISI 4130 Aeronautical Steel used in a Critical to the Flight-Safety Structure
dc.typeOtro


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