00458281

Component

http://onlinepubs.trb.org...trr/1985/1042/1042-005.pdf

https://scholar.google.co...eele&publication_year=1985

Truly effective lubrication of the wheel-rail interfaces has been shown to reduce both wear and metal flow to a much greater extent than previously had been considered possible. In addition, unforeseen benefits in reduction of corrugation development are achievable. However, in many cases a metallurgy-lubrication interaction is observed such that premium rail metallurgies benefit far less than does standard carbon rail. One explanation for this behavior may be found in the manner in which the octahedral fracture strain of rail materials varies with the ratio of contact pressure to in-surface shear stress. The enormous benefits of truly effective lubrication in reducing wear, flow, and corrugation occurrence are offset significantly by the tendency of railhead fatigue failure to become the dominant mode of rail replacement. A three-dimensional fatigue model has been employed to show that the use of rail grinding and of stronger and metallurgically cleaner rail steels can be expected to delay the damage done by fatigue processes.

Publication of this paper sponsored by Committee on Railway Maintenance. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01419430

pp 24-32

1985

Transportation Research Record

Railroad Maintenance Workshop, 2nd, 1985, Amherst, Massachusetts, USA

0309039584

Print

Figures (18) ; References (17) ; Tables (1)

Alternatives analysis; Corrugations (Defects); Fatigue (Mechanics); Lubrication; Metallurgy; Railroad tracks; Reduction (Chemistry); Wear

Highways; Maintenance and Preservation; Planning and Forecasting; Railroads

TRIS, TRB

Sep 30 1987 12:00AM

• IDENTIFICATION OF SHORT-TERM TRACK MAINTENANCE PRIORITIES AT CP RAIL
• MAINTENANCE-OF-WAY PROJECT MANAGEMENT: PRODUCTIVITY PLANNING AND CONTROL
• PRINCIPLES OF MAINTENANCE-OF-WAY PLANNING
• RAIL IRREGULARITIES AND THEIR EFFECT ON TRACK MAINTENANCE
• SECOND RAILROAD MAINTENANCE WORKSHOP: INTRODUCTION