Detail publikačního výsledku

The effect of top of rail lubricant composition on adhesion and rheological behaviour

KVARDA, D.; SKURKA, Š.; GALAS, R.; OMASTA, M.; SHI, L.; DING, H.; WANG, W.; KŘUPKA, I.; HARTL, M.

Originální název

The effect of top of rail lubricant composition on adhesion and rheological behaviour

Anglický název

The effect of top of rail lubricant composition on adhesion and rheological behaviour

Druh

Článek WoS

Originální abstrakt

The effect of top of rail lubricant composition on adhesion has been investigated using a laboratory ball-on-disc tribometer. Rheological properties were analysed using viscosimeter and high pressure torsion device. As a base medium, a biodegradable ester oil with bentonite thickener was selected. Added particles for friction modification were aluminium oxide, zinc oxide, copper sulfide and solid lubricants molybdenum disulfide and graphite. The effect of these components in the base medium on adhesion was evaluated. It was found that the most dominant component was the solid particles for friction modification. Based on the results, top of rail lubricant substances were prepared and tested. The best performing substances provided the optimal level of adhesion. These substances also showed resilience to overdosing, which caused commercial products to provide very low adhesion conditions. The rheological investigation confirmed the very low adhesion is controlled by elastohydrodynamic regime while the stable values are a result of transition to boundary lubrication.

Anglický abstrakt

The effect of top of rail lubricant composition on adhesion has been investigated using a laboratory ball-on-disc tribometer. Rheological properties were analysed using viscosimeter and high pressure torsion device. As a base medium, a biodegradable ester oil with bentonite thickener was selected. Added particles for friction modification were aluminium oxide, zinc oxide, copper sulfide and solid lubricants molybdenum disulfide and graphite. The effect of these components in the base medium on adhesion was evaluated. It was found that the most dominant component was the solid particles for friction modification. Based on the results, top of rail lubricant substances were prepared and tested. The best performing substances provided the optimal level of adhesion. These substances also showed resilience to overdosing, which caused commercial products to provide very low adhesion conditions. The rheological investigation confirmed the very low adhesion is controlled by elastohydrodynamic regime while the stable values are a result of transition to boundary lubrication.

Klíčová slova

Coefficient of adhesion; Top of rail lubrication; Wheel-rail tribology; Rheology; Numerical model

Klíčová slova v angličtině

Coefficient of adhesion; Top of rail lubrication; Wheel-rail tribology; Rheology; Numerical model

Autoři

KVARDA, D.; SKURKA, Š.; GALAS, R.; OMASTA, M.; SHI, L.; DING, H.; WANG, W.; KŘUPKA, I.; HARTL, M.

Rok RIV

2023

Vydáno

23.01.2022

Nakladatel

Elsevier

Místo

Nizozemsko

ISSN

2215-0986

Periodikum

Engineering Science and Technology, an International Journal

Svazek

35

Číslo

1

Stát

Turecká republika

Strany od

101100

Strany do

101108

Strany počet

9

URL

https://www.sciencedirect.com/science/article/pii/S2215098622000088

Plný text v Digitální knihovně

http://hdl.handle.net/11012/208181

BibTex

@article{BUT176840,
  author="Daniel {Kvarda} and Šimon {Skurka} and Radovan {Galas} and Milan {Omasta} and Lu-bing {Shi} and Haohao {Ding} and Wenjian {Wang} and Ivan {Křupka} and Martin {Hartl}",
  title="The effect of top of rail lubricant composition on adhesion and rheological behaviour",
  journal="Engineering Science and Technology, an International Journal",
  year="2022",
  volume="35",
  number="1",
  pages="101100--101108",
  doi="10.1016/j.jestch.2022.101100",
  issn="2215-0986",
  url="https://www.sciencedirect.com/science/article/pii/S2215098622000088"
}

Dokumenty

1-s2.0-S2215098622000088-main