Detail publikace
Assessing the Performance of TOR Lubricants in Humid Environments and Under Dew Conditions
SKURKA, Š. GALAS, R. OMASTA, M. DING, H. WANG, W. KŘUPKA, I. HARTL, M.
Anglický název
Assessing the Performance of TOR Lubricants in Humid Environments and Under Dew Conditions
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
en
Originální abstrakt
Top-of-rail (TOR) lubricants are commonly used for friction control in railway operations. They aim to lower friction and reduce noise and wear while ensuring sufficient transmission of traction/braking forces. However, the wheel-rail interface is an open system, so the conditions may suddenly change due to the weather, and different contaminants may enter the contact and influence the performance of these lubricants. Thus, this study examined the effect of humidity and dew on two commercial products, as these conditions often occur on the track. A methodology based on a creep curves measurement approach was used to assess product performance under various scenarios. All measurements were conducted on a universal tribometer in the ball-on-disc configuration covered with a climate chamber. The results show a strong influence of dew on the tested products, as dew lowered their performance parameters and caused low adhesion problems. Possible mechanisms of water-oil interaction and formation of oxidic third body layers were discussed. The main findings indicate that TOR lubricants may cause traction/braking problems if used in dew conditions. The present study may be helpful in optimising friction management methods in the future.
Anglický abstrakt
Top-of-rail (TOR) lubricants are commonly used for friction control in railway operations. They aim to lower friction and reduce noise and wear while ensuring sufficient transmission of traction/braking forces. However, the wheel-rail interface is an open system, so the conditions may suddenly change due to the weather, and different contaminants may enter the contact and influence the performance of these lubricants. Thus, this study examined the effect of humidity and dew on two commercial products, as these conditions often occur on the track. A methodology based on a creep curves measurement approach was used to assess product performance under various scenarios. All measurements were conducted on a universal tribometer in the ball-on-disc configuration covered with a climate chamber. The results show a strong influence of dew on the tested products, as dew lowered their performance parameters and caused low adhesion problems. Possible mechanisms of water-oil interaction and formation of oxidic third body layers were discussed. The main findings indicate that TOR lubricants may cause traction/braking problems if used in dew conditions. The present study may be helpful in optimising friction management methods in the future.
Klíčová slova anglicky
Wheel-rail tribology; Friction modification; Humidity; TOR lubricants; Dew; Contamination
Vydáno
16.07.2024
Nakladatel
SPRINGER/PLENUM PUBLISHERS
Místo
NEW YORK
ISSN
1023-8883
Ročník
72
Číslo
3
Strany od–do
72–90
Počet stran
19
BIBTEX
@article{BUT191138,
author="Šimon {Skurka} and Radovan {Galas} and Milan {Omasta} and Haohao {Ding} and Wenjian {Wang} and Ivan {Křupka} and Martin {Hartl},
title="Assessing the Performance of TOR Lubricants in Humid Environments and Under Dew Conditions",
year="2024",
volume="72",
number="3",
month="July",
pages="72--90",
publisher="SPRINGER/PLENUM PUBLISHERS",
address="NEW YORK",
issn="1023-8883"
}