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Influence of Extension of Load Spectrum on Estimation of Residual\nFatigue Lifetime of Railway Axle
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SYSNO ASEP 0481102 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Influence of Extension of Load Spectrum on Estimation of Residual
Fatigue Lifetime of Railway AxleAuthor(s) Pokorný, Pavel (UFM-A) ORCID
Hutař, Pavel (UFM-A) RID, ORCID
Náhlík, Luboš (UFM-A) RID, ORCIDNumber of authors 3 Source Title Materials Structure & Micromechanics of Fracture VIII. - Zürrich : Trans Tech Publications, 2017 / Šandera P. - ISSN 1662-9779 - ISBN 978-3-03835-626-4 Pages s. 607-610 Number of pages 4 s. Publication form Print - P Action MSMF8. International Conference on Materials Structure and Micromechanics of Fracture /8./ Event date 27.06.2016 - 29.06.2016 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CH - Switzerland Keywords railway axle ; fatigue crack ; load spectrum ; overload Subject RIV JL - Materials Fatigue, Friction Mechanics OECD category Audio engineering, reliability analysis R&D Projects LQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 EID SCOPUS 85009783134 DOI 10.4028/www.scientific.net/SSP.258.607 Annotation Railway axles are subjected to cyclic amplitude loading which can lead to fatigue failure.
For safe operation of railway axles a damage tolerance approach taking into account a possible
defect in railway axle is often required. Because of different operation regimes of trains (fast/slow
ride, ride on straight track, on curved track, over switches etc.) the load amplitude of axle is not
constant. The variability of load is defined by a load spectrum, which is determined experimentally
by measuring of load in service conditions. Even though the load spectrum is measured on several
hundreds or thousands of operation kilometres, the railway axles are in operation much longer time
(often tens of years). Therefore, some load amplitudes higher than ones measured in the test can
occur during a long-term axle service. The contribution presented deals with the effect of extension
of load spectrum by rare high load amplitudes, which can occur during long-term operation, on
residual fatigue lifetime of railway axles.Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2018
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