Publication 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.
English title
An approach for the creep-curve assessment using a new rail tribometer
Type
journal article in Web of Science
Language
en
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 in English
Wheel-rail tribology, Portable tribometer, Creep curve, Coefficient of traction
Released
11.01.2024
Publisher
ELSEVIER
Location
OXFORD
ISSN
0301-679X
Volume
191
Number
March
Pages count
10
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",
year="2024",
volume="191",
number="March",
month="January",
publisher="ELSEVIER",
address="OXFORD",
issn="0301-679X"
}