Publication detail
Effects of variable loading on residual fatigue life of the railway wheelset
POKORNÝ, P. NÁHLÍK, L. ŠEVČÍK, M. HUTAŘ, P.
English title
Effects of variable loading on residual fatigue life of the railway wheelset
Type
Peer-reviewed article not indexed in WoS or Scopus
Language
en
Original abstract
The paper deals with the effects of variable loading on residual fatigue life of the railway wheelset. The railway wheelsets can include some cracks created during manufacturing process or during previous operation. Therefore, it is important to know how the existing cracks will behave during further service of the train. The experiments show that the fatigue crack growth rate depends not only on size of the load amplitudes in a loading spectrum, but it depends also on the sequence of load amplitudes. Taking into account interaction effects of overloading cycles requires use a method that calculates increments of crack length in each cycle, i.e. cycle-by-cycle. One of such methods represents generalized Willenborg model. This model was used for residual fatigue life time estimations of railway wheelset and results obtained were compared with classical approach, which did not take into account interaction effects. Results obtained can be used for establishing of service intervals of railway wheelsets.
Keywords in English
variable amplitude loading, residual fatigue life, generalized Willenborg model, fatigue crack, railway wheelset
Released
2013-09-23
ISSN
1013-9826
Journal
Key Engineering Materials (print)
Volume
2014
Number
577-578
Pages from–to
121–124
Pages count
4
BIBTEX
@article{BUT101722,
author="Pavel {Pokorný} and Luboš {Náhlík} and Martin {Ševčík} and Pavel {Hutař}",
title="Effects of variable loading on residual fatigue life of the railway wheelset",
journal="Key Engineering Materials (print)",
year="2013",
volume="2014",
number="577-578",
pages="121--124",
issn="1013-9826"
}