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TECHNICAL PAPERS

Investigation of Top of Rail Lubrication and Laser Glazing for Improved Railroad Energy Efficiency

[+] Author and Article Information
Saud Aldajah, Oyelayo O. Ajayi, George R. Fenske

Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439

Sudhir Kumar

Tranergy Corporation, 726 Foster Ave, Bensenville, IL 60106

J. Tribol 125(3), 643-648 (Jun 19, 2003) (6 pages) doi:10.1115/1.1537745 History: Received March 07, 2002; Revised October 16, 2002; Online June 19, 2003
Copyright © 2003 by ASME
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References

Runyon, R. S., and Kumar, S., 1996, “Top of Rail Lubrication,” Proceedings of the Locomotives Maintenance Officers Association.
Cregger, D., and Conn, K. M., 2000, “Wheel/Rail Lateral Forces,” Advanced Rail Management Conference proceedings.
Kumar, S., Kim, J. S., and Rajkumar, B. R., 1982, “A Laboratory Study of the Dynamic Nature of Rail/Wheel Contact,” International Symposium Contact Mechanics of Rail/Wheel Systems, University of British Columbia Vancouver, Canada.
Guins, T. S., 2000, “Economics Potential of Top of Rail Friction Modifier System,” Transportation Technology Center, Report #P99-041, Tranergy Corp.
DiMelfi,  R. J., Sanders,  P. G., Hunter,  B., Eastman,  J. A., Leong,  K. H., and Kramer,  J. M., 1998, “Mitigation of Subsurface Crack Propagation in Railroad Rails by Laser Surface Modification,” Surf. Coat. Technol., 106, pp. 30–43.
Aldajah, S., 1998, “Investigation of Top of Rail Lubricants Consumption Characteristics,” M.S. thesis, Illinois Institute of Technology, Chicago, IL.
Kumar, S., and Rajkumar, B. R., 1980, “Laboratory Simulation of Wheel—Rail Contact Related Parameters,” American Railway Engineering Association, Bulletin 679 pp. 1–20.
Alzoubi, M., 1998, “Adhesion-Creepage Characteristics of Wheel/Rail System Under Dry and Contaminated Rail Surfaces, Chicago,” PhD. thesis, Illinois Institute of Technology, Chicago, IL.
Davis, K., Strickland, W., and Sherrock, E., 1999, “Evaluation of a Top of Rail Lubrication System,” Report #DOT/FRA/ORD-99-13, U.S. Department of Transportation, Federal Railroad Administration.

Figures

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Single pass laser glazed cross section
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Multi pass laser glazed cross section
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Knoop hardness as a function of depth
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LA 4000 schematic drawing
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Basic operation of LA4000 facility: Powered wheel 11 rolls against unpowered wheel 10. In lubricant testing, deliberate misalignment of the wheel axes (angle 12) produces a slip rate; addition of TOR lubricant in wheel-contact area causes lateral-force changes that indicate the lubricity and durability of the lubricant.
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Lateral force vs. time for fully loaded, half loaded and empty cars with the application of 5 μL of TOR/FM
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Lateral force vs. time for 150 rpm, 250 rpm and 300 rpm speeds with the application of 5 μL of TOR/FM
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lateral force vs. time for 2.5 μL, 5 μL, 7.5 μL and 10 μL of TOR/FM
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Lateral force vs. time for 0.425°, 0.85° and 1.7° angle of attacks with the application of 5 μL of TOR/FM
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Average lateral friction coefficient vs. time for dry conditions
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Average lateral friction coefficient vs. time for lubricated conditions

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