Detail publikačního výsledku

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

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

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2025

Vydáno

11.01.2024

Nakladatel

ELSEVIER

Místo

OXFORD

ISSN

0301-679X

Periodikum

Tribology International

Svazek

191

Číslo

March

Stát

Spojené království Velké Británie a Severního Irska

Strany počet

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"
}