Influence of Threshold Values on Residual Fatigue Lifetime of Railway Axles under Variable Amplitude Loading

Loading...
Thumbnail Image
Date
2015-03-20
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Altmetrics
Abstract
The paper deals with an estimation of residual fatigue lifetime of railway axles under real loading spectrum. The residual fatigue lifetime is given by magnitude of fatigue crack propagation rate. This rate depends predominantly on load, geometry and material of the axle. Standard steel EA4T for manufacturing of railway axles is considered in this paper. The scatter of data in v-K curve could be caused by inaccuracy of experimental measurement or by local change of material properties. The paper shows important differences between obtained residual fatigue lifetime estimations considering scatter in measured material data, especially near the threshold region.
Článek se zabývá určováním zbytkové únavové životnosti železničních náprav. Zbytková životnost záleží na rychlosti šíření únavové trhliny, která je závislá především na podobě zatížení, geometrii a materiálu nápravy. Článek je podrobně zaměřen na vliv pravděpodobnostního proložení materiálových dat na vypočítanou zbytkovou únavovou životnost.
Description
Citation
Procedia Engineering. 2015, vol. 101, issue 1, p. 380-385.
https://www.sciencedirect.com/science/article/pii/S187770581500644X
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en
Study field
Comittee
Date of acceptance
Defence
Result of defence
Document licence
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
Citace PRO