Publication detail

Laboratory investigation of ability of oil-based friction modifiers to control adhesion at wheel-rail interface

GALAS, R. OMASTA, M. KŘUPKA, I. HARTL, M.

Original Title

Laboratory investigation of ability of oil-based friction modifiers to control adhesion at wheel-rail interface

Type

journal article in Web of Science

Language

English

Original Abstract

In the last few years, top-of-rail friction modifiers have been designed and used in many railway systems all over the world. These adhesion enhancers are applied by either off-board or on-board system in order to achieve the intermediate level of friction and positive adhesion curve. Previous scientific effort was mainly focused on the effects of water-based friction modifier on adhesion, rolling contact fatigue, railway noise and corrugation formation. The objective of this study is to investigate the abilities of oil-based friction modifiers to control adhesion and reduce wear at wheel rail interface. For this purpose, two commercial oil-based friction modifiers were particularly utilized. A ball-on-disc tribometer was employed to investigate their traction and braking performance for various slip ratios under dry conditions.Furthermore, the effect of friction modifier amount has been studied. At the end of the performed tests, wear rate, surface damage and changes of surface topography were determined and compared to dry and oilcontaminated contact.

Keywords

Adhesion coefficient, Friction modifiers, Rail-wheel tribology, Wheel-rail adhesion.

Authors

GALAS, R.; OMASTA, M.; KŘUPKA, I.; HARTL, M.

Released

15. 12. 2016

Publisher

Elsevier

Location

Švýcarsko

ISBN

0043-1648

Periodical

WEAR

Year of study

368-369

Number

3

State

Swiss Confederation

Pages from

230

Pages to

238

Pages count

9

URL

http://www.sciencedirect.com/science/article/pii/S0043164816303283

BibTex

@article{BUT128491,
  author="Radovan {Galas} and Milan {Omasta} and Ivan {Křupka} and Martin {Hartl}",
  title="Laboratory investigation of ability of oil-based friction modifiers to control adhesion at wheel-rail interface",
  journal="WEAR",
  year="2016",
  volume="368-369",
  number="3",
  pages="230--238",
  doi="10.1016/j.wear.2016.09.015",
  issn="0043-1648",
  url="http://www.sciencedirect.com/science/article/pii/S0043164816303283"
}