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WANG, C. SHI, L.B. DING, H.H. WANG, W.J. GALAS, R. GUO, J. LIU, Q.Y., ZHOU, Z.R., OMASTA, M.
Original Title
Adhesion and damage characteristics of wheel/rail using different mineral particles as adhesion enhancers
Type
journal article in Web of Science
Language
English
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
mineral particles; crushing strength; wheel/rail adhesion; wear; rolling contact fatigue
Authors
WANG, C.; SHI, L.B.; DING, H.H.; WANG, W.J.; GALAS, R.; GUO, J.; LIU, Q.Y., ZHOU, Z.R., OMASTA, M.
Released
18. 7. 2021
Publisher
Elsevier
Location
Nizozemsko
ISBN
0043-1648
Periodical
WEAR
Year of study
477
Number
8
State
Swiss Confederation
Pages from
203796
Pages to
Pages count
12
URL
https://www-sciencedirect-com.ezproxy.lib.vutbr.cz/science/article/pii/S004316482100185X
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" }