Fatigue lifetime estimation of railway axles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F17%3A00481281" target="_blank" >RIV/68081723:_____/17:00481281 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26210/17:PU140214
Result on the web
<a href="http://dx.doi.org/10.1016/j.engfailanal.2016.12.014" target="_blank" >http://dx.doi.org/10.1016/j.engfailanal.2016.12.014</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.engfailanal.2016.12.014" target="_blank" >10.1016/j.engfailanal.2016.12.014</a>

Result language
angličtina
Original language name
Fatigue lifetime estimation of railway axles
Original language description
The railway axles are subjected to cyclic loading during their operation. Their load is of long-nterm nature, therefore a real risk of fatigue failure exists. This failure could lead to derailmentnof the whole train with serious consequences. To prevent such scenario, the railway axles havento be safely removed from operation before their final failure occurs.nThis paper presents methodology for the residual fatigue lifetime prediction of the railway axlenbased on the linear elastic fracture mechanics concept. The methodology contains estimation ofnthe critical position of initial crack, prediction of the fatigue crack front shape developmentnduring crack propagation, separation of the bending and press-fitting contributions to thenaxle load, experimental measurement of the crack growth kinetics of EA4T steel and subse-nquent estimation of the residual fatigue lifetime of railway axle. Part of the presented studynis also devoted to the probability aspects of determination of material characteristics describingnfatigue crack propagation and retardation effects caused by existence of plastic zone ahead ofnpropagating fatigue crack. Described methodology is already applied in the design process ofnnew railway axles in Bonatrans company.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20306 - Audio engineering, reliability analysis

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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