Publication detail

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.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

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

Authors

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

Released

23. 1. 2022

Publisher

Elsevier

Location

Nizozemsko

ISBN

2215-0986

Periodical

Engineering Science and Technology, an International Journal

Year of study

35

Number

1

State

Republic of Turkey

Pages from

101100

Pages to

101108

Pages count

9

URL

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

Full text in the Digital Library

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"
}