Detail publikace

Residual fatigue lifetime estimation of railway axles for various loading spectra

POKORNÝ, P. HUTAŘ, P. NÁHLÍK, L.

Originální název

Residual fatigue lifetime estimation of railway axles for various loading spectra

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

POKORNÝ, P.; HUTAŘ, P.; NÁHLÍK, L.

Rok RIV

2015

Vydáno

1. 4. 2016

ISSN

0167-8442

Periodikum

Theoretical and Applied Fracture Mechanics

Číslo

81

Stát

Nizozemsko

Strany od

25

Strany do

32

Strany počet

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"
}