Effects of solid friction modifier on friction and rolling contact fatigue damage of wheel-rail surfaces

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU141304" target="_blank" >RIV/00216305:26210/21:PU141304 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs40544-021-0521-5" target="_blank" >https://link.springer.com/article/10.1007%2Fs40544-021-0521-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s40544-021-0521-5" target="_blank" >10.1007/s40544-021-0521-5</a>

Result language
angličtina
Original language name
Effects of solid friction modifier on friction and rolling contact fatigue damage of wheel-rail surfaces
Original language description
In railway network, friction is an important factor to consider in terms of the service behaviors of wheel-rail system. The objective of this study was to investigate the effect of a solid friction modifier (FM) in a railway environment. This was achieved by studying the friction, wear, and rolling contact fatigue (RCF) damage on the wheel-rail materials at different slip ratios. The results showed that when a solid FM was applied, the friction coefficient decreased. After the solid FM was separated from the wheel-rail interface, the friction coefficient gradually increased to its original level. With the application of the solid FM, the wear rates of the wheel-rail decreased. In addition, the thickness and hardness of the plastic deformation layers of the wheel-rail materials were reduced. The worn surfaces of the wheel-rail were dominated by pits and RCF cracks. Without the FM, RCF cracks ranged from 84 to 120 mu m, and subsurface cracks were generated. However, with the FM, RCF cracks ranged from 17 to 97 mu m and no subsurface cracks were generated. These findings indicate possible methods of improving the performance of railway rolling stock by managing friction, and reducing wear and permanent RCF damage affecting both the wheels and rails.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20301 - Mechanical engineering

Project
<a href="/en/project/8JCH1042" target="_blank" >8JCH1042: Friction management as a solution for noise and wear mitigation at the wheel-rail interface</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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