Publication detail

Adhesion and damage characteristics of wheel/rail using different mineral particles as adhesion enhancers

WANG, C. SHI, L.B. DING, H.H. WANG, W.J. GALAS, R. GUO, J. LIU, Q.Y. ZHOU, Z.R. OMASTA, M.

English title

Adhesion and damage characteristics of wheel/rail using different mineral particles as adhesion enhancers

Type

WoS Article

Language

en

Original abstract

Mineral particles are used to improve adhesion between wheel and rail, but they might lead to severe damages of wheel and rail surfaces. To investigate the adhesion enhancement phenomena and damages of both wheel and rail induced by adhesion enhancers, the crushing strengths of four types of mineral particles (zinc oxide, sand, spinel and alumina) were firstly explored on a uniaxial compression tester. Then the adhesion, wear and damage of wheel/rail were studied on a twin-disc machine under the wet condition. The results show that the characteristic crushing strength was 24 MPa for zinc oxide, 40 MPa for sand, 51 MPa for spinel and 73 MPa for alumina, respectively. For particle with the lowest crushing strength (zinc oxide), the adhesion coefficient was the lowest (around 0.20). With the increase in the crushing strength to 40 MPa, the adhesion coefficient was improved to around 0.28. The particles with higher crushing strengths induced larger wheel/rail wear rates and severer rolling contact fatigue (RCF) damages on wheel and rail. The RCF cracks were large in lengths but small in angles, which finally developed into large pieces of material peeling off from the surface. Sand was the most suitable adhesion enhancer considering its good adhesion enhancement and the relatively mild damage on wheel/rail materials.

Keywords in English

mineral particles; crushing strength; wheel/rail adhesion; wear; rolling contact fatigue

Released

2021-07-18

Publisher

Elsevier

Location

Nizozemsko

ISSN

0043-1648

Journal

Wear

Volume

477

Number

8

Pages from–to

203796–203796

Pages count

12

BIBTEX


@article{BUT171616,
  author="WANG, C. and SHI, L.B. and DING, H.H. and WANG, W.J. and GALAS, R. and GUO, J. and LIU, Q.Y., ZHOU, Z.R., OMASTA, M.",
  title="Adhesion and damage characteristics of wheel/rail using different mineral particles as adhesion enhancers",
  journal="Wear",
  year="2021",
  volume="477",
  number="8",
  pages="203796--203796",
  doi="10.1016/j.wear.2021.203796",
  issn="0043-1648",
  url="https://www-sciencedirect-com.ezproxy.lib.vutbr.cz/science/article/pii/S004316482100185X"
}