Publication detail

Fatigue crack propagation in steels for railway axles

NÁHLÍK, L. POKORNÝ, P. HUTAŘ, P. MATUŠEK, P.

English title

Fatigue crack propagation in steels for railway axles

Type

WoS Article

Language

en

Original abstract

The paper deals with the influence of order of cycles in the loading block on the fatigue crack growth rate in railway axle. The railway axle can include some cracks from manufacturing process or initiated fatigue cracks from previous operation. It is advantageous to know how the crack will behave during further service of the train to ensure its safe operation. The classical approaches describing the fatigue crack growth do not take into account the effects of overload cycles, which enlarge the plastic zone ahead of the crack tip. The enlarged plastic zone generates residual compressive stresses, which cause a retardation of the fatigue crack growth. Finite element numerical calculations were used together with the generalized Willenborg model to determine influence of overload cycles on the increment of fatigue crack growing in railway axles. Real geometry of the axle, the crack front shape and typical loading spectrum were taken into account.

Keywords in English

railway axle, crack retardation, variable loading amplitude, generalized Willenborg model.

Released

2014-01-06

ISSN

1013-9826

Journal

Key Engineering Materials (print)

Volume

2014

Number

592-593

Pages from–to

254–257

Pages count

4

BIBTEX


@article{BUT101681,
  author="Luboš {Náhlík} and Pavel {Pokorný} and Pavel {Hutař} and Petr {Matušek}",
  title="Fatigue crack propagation in steels for railway axles",
  journal="Key Engineering Materials (print)",
  year="2014",
  volume="2014",
  number="592-593",
  pages="254--257",
  doi="10.4028/www.scientific.net/KEM.592-593.254",
  issn="1013-9826"
}