Publication detail

The effect of threshold value on the residual fatigue lifetime of railway axles

POKORNÝ, P. NÁHLÍK, L. HUTAŘ, P.

Original Title

The effect of threshold value on the residual fatigue lifetime of railway axles

Type

conference paper

Language

English

Original Abstract

The fatigue failure of railway axles could have unaccepted consequences. Because of safe operation, it is important to determine the residual fatigue lifetime. The railway axle could contain some cracks either from manufacturing process or from previous service operation. Present defectoscopy can reliably detect only relatively long cracks (longer than 2 mm), see [1]. In other words, there is a risk that the existing crack is not detected by defectoscopy. For conservative establishment of the residual fatigue lifetime the crack, which could be not detected by defectoscopy, must be considered. This paper deals with an effect of the threshold value of fatigue crack propagation on the residual fatigue lifetime of railway axles. Two very commonly used materials for railway axles EA1N and EA4T steels are considered. The results of this paper could be used for safer operation of railway axles.

Keywords

railway axle, threshold value, fatigue crack, residual fatigue lifetime

Authors

POKORNÝ, P.; NÁHLÍK, L.; HUTAŘ, P.

RIV year

2014

Released

12. 5. 2014

ISBN

978-80-214-4871-1

Book

ENGINEERING MECHANICS 2014

Pages from

496

Pages to

499

Pages count

4

BibTex

@inproceedings{BUT108302,
  author="Pavel {Pokorný} and Luboš {Náhlík} and Pavel {Hutař}",
  title="The effect of threshold value on the residual fatigue lifetime of railway axles",
  booktitle="ENGINEERING MECHANICS 2014",
  year="2014",
  pages="496--499",
  isbn="978-80-214-4871-1"
}