Publication detail
Influence of Initial Inclined Surface Crack on Estimated Residual Fatigue Lifetime of Railway Axle
NÁHLÍK, L. POKORNÝ, P. ŠEVČÍK, M. HUTAŘ, P.
English title
Influence of Initial Inclined Surface Crack on Estimated Residual Fatigue Lifetime of Railway Axle
Type
journal article in Web of Science
Language
en
Original abstract
Railway axles are subjected to cyclic loading which can lead to fatigue failure. For safe operation of railway axles a damage tolerance approach taking into account a possible defect on railway axle surface is often required. The contribution deals with an estimation of residual fatigue lifetime of railway axle with initial inclined surface crack. 3D numerical model of inclined semi-elliptical surface crack in railway axle was developed and its curved propagation through the axle was simulated by finite element method. Presence of press-fitted wheel in the vicinity of initial crack was taken into account. A typical loading spectrum of railway axle was considered and residual fatigue lifetime was estimated by NASGRO approach. Material properties of typical axle steel EA4T were considered in numerical calculations and lifetime estimation.
English abstract
Railway axles are subjected to cyclic loading which can lead to fatigue failure. For safe operation of railway axles a damage tolerance approach taking into account a possible defect on railway axle surface is often required. The contribution deals with an estimation of residual fatigue lifetime of railway axle with initial inclined surface crack. 3D numerical model of inclined semi-elliptical surface crack in railway axle was developed and its curved propagation through the axle was simulated by finite element method. Presence of press-fitted wheel in the vicinity of initial crack was taken into account. A typical loading spectrum of railway axle was considered and residual fatigue lifetime was estimated by NASGRO approach. Material properties of typical axle steel EA4T were considered in numerical calculations and lifetime estimation.
Keywords in English
Inclined crack; railway axle; residual fatigue lifetime; fatigue crack propagation
Released
01.01.2017
Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
Location
SINGAPORE
ISSN
1756-9737
Volume
7
Number
4
Pages from–to
1–6
Pages count
6
BIBTEX
@article{BUT170579,
author="Luboš {Náhlík} and Pavel {Pokorný} and Martin {Ševčík} and Pavel {Hutař},
title="Influence of Initial Inclined Surface Crack on Estimated Residual Fatigue Lifetime of Railway Axle",
year="2017",
volume="7",
number="4",
month="January",
pages="1--6",
publisher="WORLD SCIENTIFIC PUBL CO PTE LTD",
address="SINGAPORE",
issn="1756-9737"
}