Publication result detail

An approach for the creep-curve assessment using a new rail tribometer

VALENA, M.; OMASTA, M.; KVARDA, D.; GALAS, R.; KŘUPKA, I.; HARTL, M.

Original Title

An approach for the creep-curve assessment using a new rail tribometer

English Title

An approach for the creep-curve assessment using a new rail tribometer

Type

WoS Article

Original Abstract

The friction properties of the wheel-rail contact are characterized by a coefficient of traction (CoT), which can be affected by many contaminants. Numerous devices for assessing CoT are available; however, only a small number of them are capable of recording creep curves. This work introduced a rail-mounted tribometer that uses controlled changes in braking torque on a measuring wheel to induce creep in the contact. A methodology for assessing creep curve parameters was proposed, utilizing both analytical and numerical models of the contact. The experiments were performed both in the field and in the laboratory to investigate the effect of railhead conditions under various contact pressures and to track the evolution of the CoT during a measurement.

English abstract

The friction properties of the wheel-rail contact are characterized by a coefficient of traction (CoT), which can be affected by many contaminants. Numerous devices for assessing CoT are available; however, only a small number of them are capable of recording creep curves. This work introduced a rail-mounted tribometer that uses controlled changes in braking torque on a measuring wheel to induce creep in the contact. A methodology for assessing creep curve parameters was proposed, utilizing both analytical and numerical models of the contact. The experiments were performed both in the field and in the laboratory to investigate the effect of railhead conditions under various contact pressures and to track the evolution of the CoT during a measurement.

Keywords

Wheel-rail tribology, Portable tribometer, Creep curve, Coefficient of traction

Key words in English

Wheel-rail tribology, Portable tribometer, Creep curve, Coefficient of traction

Authors

VALENA, M.; OMASTA, M.; KVARDA, D.; GALAS, R.; KŘUPKA, I.; HARTL, M.

RIV year

2025

Released

11.01.2024

Publisher

ELSEVIER

Location

OXFORD

ISBN

0301-679X

Periodical

Tribology International

Volume

191

Number

March

State

United Kingdom of Great Britain and Northern Ireland

Pages count

10

URL

https://www.sciencedirect.com/science/article/pii/S0301679X2300943X?via%3Dihub

BibTex

@article{BUT185622,
  author="Martin {Valena} and Milan {Omasta} and Daniel {Kvarda} and Radovan {Galas} and Ivan {Křupka} and Martin {Hartl}",
  title="An approach for the creep-curve assessment using a new rail tribometer",
  journal="Tribology International",
  year="2024",
  volume="191",
  number="March",
  pages="10",
  doi="10.1016/j.triboint.2023.109153",
  issn="0301-679X",
  url="https://www.sciencedirect.com/science/article/pii/S0301679X2300943X?via%3Dihub"
}