Publication detail

Residual fatigue lifetime estimation of railway axles for various loading spectra

POKORNÝ, P. HUTAŘ, P. NÁHLÍK, L.

Original Title

Residual fatigue lifetime estimation of railway axles for various loading spectra

Type

journal article in Web of Science

Language

English

Original Abstract

The knowledge of the residual fatigue lifetime of railway axles is very important for the safe operation of trains. The railway axles could include some defects like cracks, scratches or inhomogeneities which could contribute to the fatigue crack initiation and in the final stage to axle failure. The non-destructive testing methods are not reliable for detection of relatively short (circa 1-2 mm), but even dangerous cracks. For conservative estimation of residual fatigue lifetime the railway axle containing initial crack should be considered. The residual fatigue lifetime is given by the number of load cycles for fatigue crack growth from the initial size of the crack up to the critical size with consequent fatigue failure of railway axle. Railway axles are used in different types of trains which are used under different conditions (regional trains, urban trains, high speed trains, freight trains etc.). This work is focused on numerical estimation of residual fatigue lifetime of railway axle while several different load spectra taken from the literature are considered in the performed estimations. This paper also shows the influence of the discretization level of the continuous load spectrum and effect of magnification or diminution of load spectrum on the calculated residual fatigue lifetime of the railway axle.

Keywords

Fatigue failure; Residual fatigue lifetime; Crack propagation; Railway axle; Load spectrum

Authors

POKORNÝ, P.; HUTAŘ, P.; NÁHLÍK, L.

RIV year

2015

Released

1. 4. 2016

ISBN

0167-8442

Periodical

Theoretical and Applied Fracture Mechanics

Number

81

State

Kingdom of the Netherlands

Pages from

25

Pages to

32

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S0167844215202017

BibTex

@article{BUT115433,
  author="Pavel {Pokorný} and Pavel {Hutař} and Luboš {Náhlík}",
  title="Residual fatigue lifetime estimation of railway axles for various loading spectra",
  journal="Theoretical and Applied Fracture Mechanics",
  year="2016",
  number="81",
  pages="25--32",
  doi="10.1016/j.tafmec.2015.06.007",
  issn="0167-8442",
  url="https://www.sciencedirect.com/science/article/pii/S0167844215202017"
}