Rheological and tribological performance of top-of-rail friction modifiers with different viscosities

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU152577" target="_blank" >RIV/00216305:26210/24:PU152577 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0043164823006129" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0043164823006129</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.wear.2023.205229" target="_blank" >10.1016/j.wear.2023.205229</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rheological and tribological performance of top-of-rail friction modifiers with different viscosities

Popis výsledku v původním jazyce

Friction modifier (FM) in the rail/wheel applications is a special lubrication material that could be applied between the top of rail and the tread of wheel. The application of FM brings many benefits to the wheel-rail interface such as reducing noise, alleviating wheel-rail wear and mitigating corrugation. Viscosity is an important parameter to reflect fluid properties of FM materials. In this study, FM samples with different viscosities were prepared by changing the content of sodium carboxymethyl cellulose (CMC). The tribological and rheological performance of these FM samples were explored using the twin-disc testing machine and rotational rheometer. Furthermore, the relationship between the tribological and rheological results were tried to establish. The results showed that the increase in the content of CMC could increase the viscosity of FM and enhance the solid-like characteristic of FM, which could help FM reduce coefficient of adhesion (COA) level and wheel-rail damage. For the FM material developed in this study, the rational applying amount and the range of viscosity were about 15 mu L/time and 200 Pa.s to 400 Pa.s, respectively, considering the factors of wheel-rail adhesion, wear, potential waste and pumping process in the practical application.

Název v anglickém jazyce

Rheological and tribological performance of top-of-rail friction modifiers with different viscosities

Popis výsledku anglicky

Friction modifier (FM) in the rail/wheel applications is a special lubrication material that could be applied between the top of rail and the tread of wheel. The application of FM brings many benefits to the wheel-rail interface such as reducing noise, alleviating wheel-rail wear and mitigating corrugation. Viscosity is an important parameter to reflect fluid properties of FM materials. In this study, FM samples with different viscosities were prepared by changing the content of sodium carboxymethyl cellulose (CMC). The tribological and rheological performance of these FM samples were explored using the twin-disc testing machine and rotational rheometer. Furthermore, the relationship between the tribological and rheological results were tried to establish. The results showed that the increase in the content of CMC could increase the viscosity of FM and enhance the solid-like characteristic of FM, which could help FM reduce coefficient of adhesion (COA) level and wheel-rail damage. For the FM material developed in this study, the rational applying amount and the range of viscosity were about 15 mu L/time and 200 Pa.s to 400 Pa.s, respectively, considering the factors of wheel-rail adhesion, wear, potential waste and pumping process in the practical application.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

WEAR

ISSN

0043-1648

e-ISSN

1873-2577

Svazek periodika

538

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

„“-„“

Kód UT WoS článku

001164654500001

EID výsledku v databázi Scopus

2-s2.0-85181971792