Publication result detail

Influence of crack retardation on fatigue crack propagation in steels for railway axles

NÁHLÍK, L.; POKORNÝ, P.; HUTAŘ, P.

Original Title

Influence of crack retardation on fatigue crack propagation in steels for railway axles

English Title

Influence of crack retardation on fatigue crack propagation in steels for railway axles

Type

Paper in proceedings (conference paper)

Original Abstract

The railway axles are subjected to cyclic loading, therefore there is a risk of fatigue failure. For reason that possible crack could not be detected by non-destructive testing method an existing crack in the railway axle must be considered. This is conservative approach commonly used in applications where potential fatigue failure has unaccepted consequences. This paper deals with retardation effect caused by overload cycles and compares results obtained by no retardation approach and results obtained by generalized Willenborg model, which takes into account the retardation effects due to plastic zone around the crack tip. Results obtained can contribute to the better understanding of fatigue crack behavior in railway axles.

English abstract

The railway axles are subjected to cyclic loading, therefore there is a risk of fatigue failure. For reason that possible crack could not be detected by non-destructive testing method an existing crack in the railway axle must be considered. This is conservative approach commonly used in applications where potential fatigue failure has unaccepted consequences. This paper deals with retardation effect caused by overload cycles and compares results obtained by no retardation approach and results obtained by generalized Willenborg model, which takes into account the retardation effects due to plastic zone around the crack tip. Results obtained can contribute to the better understanding of fatigue crack behavior in railway axles.

Keywords

railway axle, fatigue crack, generalized Willenborg model, crack retardation

Key words in English

railway axle, fatigue crack, generalized Willenborg model, crack retardation

Authors

NÁHLÍK, L.; POKORNÝ, P.; HUTAŘ, P.

RIV year

2017

Released

02.03.2014

Publisher

11th International Fatigue Congress

Location

Zurich

ISBN

978-3-03835-008-8

Book

11th International Fatigue Congress

Pages from

351

Pages to

356

Pages count

6

BibTex

@inproceedings{BUT104825,
  author="Luboš {Náhlík} and Pavel {Pokorný} and Pavel {Hutař}",
  title="Influence of crack retardation on fatigue crack propagation in steels for railway axles",
  booktitle="11th International Fatigue Congress",
  year="2014",
  pages="351--356",
  publisher="11th International Fatigue Congress",
  address="Zurich",
  doi="10.4028/www.scientific.net/AMR.891-892.351",
  isbn="978-3-03835-008-8"
}