Influence of variable stress ratio during train operation on residual fatigue lifetime of railway axles

Simple item page
dc.contributor.authorPokorný, Pavelcs
dc.contributor.authorNáhlík, Lubošcs
dc.contributor.authorHutař, Pavelcs
dc.coverage.issue1cs
dc.coverage.volume2cs
dc.date.accessioned2021-12-08T11:54:28Z
dc.date.available2021-12-08T11:54:28Z
dc.date.issued2016-01-01cs
dc.description.abstractRailway axles are subjected to cyclic loading, which could lead to fatigue failure. Therefore, it is desired to know residual fatigue lifetime of railway axles to ensure safe operation of trains. Because of detection of relatively small fatigue cracks is not guaranteed an estimation of residual fatigue lifetime is based on damage tolerance approach. The acting stress ratio is variable due to variable amplitude loading and load caused by existence of press-fitted wheel in the vicinity of assumed crack. The contribution is focused on influence of variable stress ratio in EA4T steel on residual fatigue lifetime of railway axles. The influence of stress intensity factor on fatigue crack propagation rate was experimentally evaluated for three different stress ratios, which correspond to operation conditions. Two different expressions of fatigue crack propagation rate were used and mutually compared to show influence of the stress ratio on residual fatigue lifetime of structure made of EA4T steel. The first expression considers stress intensity factor range (respecting stress ratio R) and the second one uses maximal value of the stress intensity factor. The paper shows ability of both expressions to describe experimental data obtained under different stress ratios and their influence on estimated residual fatigue lifetime values. The results obtained contribute to the better estimation of residual fatigue lifetime of railway axles and generally to the safer rail transportation. Copyright (C) 2016 The Authors. Published by Elsevier B.V.en
dc.formattextcs
dc.format.extent3585-3592cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationProcedia Structural Integrity. 2016, vol. 2, issue 1, p. 3585-3592.en
dc.identifier.doi10.1016/j.prostr.2016.06.447cs
dc.identifier.issn2452-3216cs
dc.identifier.other170580cs
dc.identifier.urihttp://hdl.handle.net/11012/203118
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofProcedia Structural Integritycs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S2452321616304668cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2452-3216/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectrailway axleen
dc.subjectstress ratioen
dc.subjectEA4Ten
dc.subjectfatigue cracken
dc.titleInfluence of variable stress ratio during train operation on residual fatigue lifetime of railway axlesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-170580en
sync.item.dbtypeVAVen
sync.item.insts2021.12.08 12:54:28en
sync.item.modts2021.12.08 12:14:27en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav mechaniky těles, mechatroniky a biomechanikycs
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
1s2.0S2452321616304668main.pdf
Size:
1.42 MB
Format:
Adobe Portable Document Format
Description:
1s2.0S2452321616304668main.pdf
Download
Collections
Ústav mechaniky těles, mechatroniky a biomechaniky