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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/8JCH1042" target="_blank" >8JCH1042: Friction management jako řešení pro redukci hluku a opotřebení v kolejové dopravě</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Friction

ISSN

2223-7690

e-ISSN

2223-7704

Svazek periodika

10

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

11

Strana od-do

597-607

Kód UT WoS článku

000675799600001

EID výsledku v databázi Scopus

2-s2.0-85110947316