Název: Influence of Extension of Load Spectrum on Estimation of Residual\nFatigue Lifetime of Railway Axle
Autoři: Pokorný, Pavel ; Hutař, Pavel ; Náhlík, Luboš
Typ dokumentu: Příspěvky z konference
Konference/Akce: MSMF8. International Conference on Materials Structure and Micromechanics of Fracture /8./, Brno (CZ), 20160627
Rok: 2017
Jazyk: eng
Abstrakt: Railway axles are subjected to cyclic amplitude loading which can lead to fatigue failure.\nFor safe operation of railway axles a damage tolerance approach taking into account a possible\ndefect in railway axle is often required. Because of different operation regimes of trains (fast/slow\nride, ride on straight track, on curved track, over switches etc.) the load amplitude of axle is not\nconstant. The variability of load is defined by a load spectrum, which is determined experimentally\nby measuring of load in service conditions. Even though the load spectrum is measured on several\nhundreds or thousands of operation kilometres, the railway axles are in operation much longer time\n(often tens of years). Therefore, some load amplitudes higher than ones measured in the test can\noccur during a long-term axle service. The contribution presented deals with the effect of extension\nof load spectrum by rare high load amplitudes, which can occur during long-term operation, on\nresidual fatigue lifetime of railway axles.
Klíčová slova: fatigue crack; load spectrum; overload; railway axle
Číslo projektu: LQ1601 (CEP)
Poskytovatel projektu: GA MŠk
Zdrojový dokument: Materials Structure & Micromechanics of Fracture VIII, ISBN 978-3-03835-626-4, ISSN 1662-9779

Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0276711

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-373299


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