Publication detail

Influence of extension of load spectrum on estimation of residual fatigue lifetime of railway axle

POKORNÝ, P. HUTAŘ, P. NÁHLÍK, L.

Original Title

Influence of extension of load spectrum on estimation of residual fatigue lifetime of railway axle

Type

journal article in Scopus

Language

English

Original Abstract

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.

Keywords

Fatigue crack; Load spectrum; Overload; Railway axle

Authors

POKORNÝ, P.; HUTAŘ, P.; NÁHLÍK, L.

Released

1. 12. 2016

Publisher

Trans Tech Publications Ltd

ISBN

1012-0394

Periodical

Solid State Phenomena

Year of study

258

Number

-

State

Swiss Confederation

Pages from

607

Pages to

610

Pages count

4

URL

https://www.scientific.net/SSP.258.607

BibTex

@article{BUT177132,
  author="Pavel {Pokorný} and Pavel {Hutař} and Luboš {Náhlík}",
  title="Influence of extension of load spectrum on estimation of residual fatigue lifetime of railway axle",
  journal="Solid State Phenomena",
  year="2016",
  volume="258",
  number="-",
  pages="607--610",
  doi="10.4028/www.scientific.net/SSP.258.607",
  issn="1012-0394",
  url="https://www.scientific.net/SSP.258.607"
}