A Beek

A Kapoor

A Khalladi

B Koan-Sok

C Colombié

D Rippeth

E M Eric

F C R Hernandez

J B Peter

J Lundmark

J Sundh

L Deters

M Hiensch

M Sedlacek

N P Suh

N Saka

P A Cuervo

R Lewis

S Chandrasekar

S Descartes

S Grassie

Y Lyu

Y Xie

English

Abstract
          The objective of this study was to investigate the influence of the surface topography on the tribological behavior of the wheel/rail contact. Four different groove orientations forming the surface topographies—smooth surface, 0°, 45° and 90°—were manufactured by grinding and compared. All friction tests with different surface topographies were conducted using an alternative tribometer simulating the pure sliding process in the wheel-rail contact. The Hertzian pressure was maintained at 1,000 MPa with two levels of sliding velocity (20 mm/s and 80 mm/s). This study resulted in five main findings.
          First, the initial surface topographies seemed to have a significant effect on the friction coefficient independently of the speed. Second, the increase of the sliding velocity would decrease the friction coefficient. Third, especially when accompanied with a high sliding velocity, an initial rough surface would have a significant effect on the wear of the wheel. Fourth, the highest wear values were observed at groove orientations of 45° when accompanied with a high sliding velocity. Finally, the break-in duration seemed to depend on the initial surface topographies of the rail and the sliding velocity.</jats:p

A. Khalladi

K. Elleuch

Crossref

Friction

Effect of surface topography with different groove angles on tribological behavior of the wheel/rail contact using alternative machine

https://link.springer.com/content/pdf/10.1007%2Fs40544-016-0121-y.pdf

Effect of surface topography with different groove angles on tribological behavior of the wheel/rail contact using alternative machine

Abstract

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