Wheel/rail adhesion and damage under different contact conditions and application parameters of friction modifier
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F23%3APU149774" target="_blank" >RIV/00216305:26210/23:PU149774 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0043164823002533" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0043164823002533</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.wear.2023.204870" target="_blank" >10.1016/j.wear.2023.204870</a>
Alternative languages
Result language
angličtina
Original language name
Wheel/rail adhesion and damage under different contact conditions and application parameters of friction modifier
Original language description
Friction modifier (FM) is a newly developed third medium to control the service performance of wheel/rail. The wheel/rail performance is influenced by the wheel/rail contact conditions and FM application parameters. Therefore, the effects of FM application parameter and the wheel/rail contact parameters on the adhesion and damage behaviors of wheel and rail materials should be explored. In this study, the influences of application amount of FM, the wheel/rail contact stress and the creepage on the adhesion and damage behaviors were studied using a twin-disc machine. Results indicated that the increase in contact stress would reduce the wheel/ rail minimum adhesion coefficient and effective holding time of FM. The increase in the creepage would increase the adhesion coefficient and reduce the holding time. Under the wheel/rail contact stresses of 800 and 1100 MPa, the application of FM could reduce wheel/rail wear and damage. But under 1500 MPa, FM could cause serious rail surface damages. Moreover, the surface crack propagation process of rail mainly included three stages: initial stage, transition stage and rapid propagation stage. The "oil wedge effect" was the main mechanism for aggravating the surface damages of rail under 1500 MPa.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
WEAR
ISSN
0043-1648
e-ISSN
1873-2577
Volume of the periodical
523
Issue of the periodical within the volume
June
Country of publishing house
CH - SWITZERLAND
Number of pages
15
Pages from-to
„“-„“
UT code for WoS article
000982316500001
EID of the result in the Scopus database
2-s2.0-85151349705