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Influence of threshold values on residual fatigue lifetime of railway axles under variable amplitude loading
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SYSNO ASEP 0449788 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Influence of threshold values on residual fatigue lifetime of railway axles under variable amplitude loading Author(s) Pokorný, Pavel (UFM-A) ORCID
Náhlík, Luboš (UFM-A) RID, ORCID
Hutař, Pavel (UFM-A) RID, ORCIDNumber of authors 3 Source Title International Conference on Material and Component Performance under Variable Amplitude Loading, C. - Amsterdam : Elsevier Ltd, 2015 / Papuga J. ; Ružička M. - ISSN 1877-7058 Pages s. 380-385 Number of pages 6 s. Publication form Online - E Action VAL 2015 - International Conference on Material and Component Performance under Variable Amplitude Loading /3./ Event date 23.03.2015-26.03.2015 VEvent location Praha Country CZ - Czech Republic Event type WRD Language eng - English Country GB - United Kingdom Keywords railway axle ; residual fatigue lifetime ; fatigue crack ; EA4T Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects EE2.3.20.0214 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 UT WOS 000380492500046 EID SCOPUS 84925796683 DOI 10.1016/j.proeng.2015.02.046 Annotation 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 railwa y ax les is considered in this paper. The scatter of data i n v-K curve could be caused by inaccuracy of experimental meas urement 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. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2016
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