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Use of electro-dynamic braking on locomotives and its effect on rolling contact fatigue
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.ORCID iD: 0000-0002-9723-2881
LKAB.
2017 (English)In: Proceedings of the 11th International Heavy Haul Association Conference (IHHA 2017), Cape Town, South Africa, 2–6 September 2017, 2017, p. 1133-1137Conference paper, Published paper (Refereed)
Abstract [en]

ABSTRACT: The mining company LKAB uses IORE locomotives to haul iron ore trains. When evaluated using life cycle cost (LCC) analysis for reliability, availability, maintainability, and safety (RAMS), wheel life is found to be 930,000 km. The IORE locomotives are equipped with electro-dynamic (ED) brakes, but because of the inability of the contact grid to handle the full regenerative energy from the locomotives, the use of theED-brake was restricted until the contact grid was upgraded in 2010. From around 2011, the wheel life started to decrease because of increased rolling contact fatigue (RCF), dropping to around 350,000 km. LKABsuspected the use of the ED-brake was contributing to the RCF problem. A field test compared one locomotive with ED-braking reduced to a minimum level to a locomotive with full ED-braking capacity. The wheels of the two locomotives were visually inspected at intervals of about 13,000 km. The results showed no difference in RCF performance between the locomotives.

Place, publisher, year, edition, pages
2017. p. 1133-1137
Keywords [en]
Rolling contact fatigue, electro-dynamic braking, EDC, RCF, railway
National Category
Engineering and Technology Other Civil Engineering
Research subject
Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-66789ISBN: 9780911382662 (print)OAI: oai:DiVA.org:ltu-66789DiVA, id: diva2:1160723
Conference
11th International Heavy Haul Association Conference (IHHA 2017), Cape Town, South Africa, 2–6 September 2017
Available from: 2017-11-28 Created: 2017-11-28 Last updated: 2017-12-04Bibliographically approved

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