Examensarbete: Carbon strip modelling using locomotive telemetry data
- Urval sker löpande
- Stockholm
- Hybrid
Carbon strip modelling using locomotive telemetry data
Background
For thread-braked freight locomotives, carbon strip wear and brake block wear are major maintenance concern. The condition of these components is critical for safe rail transport which in turn sets strict limits on the distance travelled between inspection.Hence, insight into the main driver affecting their lifespan would provide railway operators with valuable information to support condition-based or predictive maintenance. This would enable longer distance between inspection, better utilization of the components and less material waste. Most of Green Cargos electric locomotives have on-board systems that record the energy consumption and regeneration, current, voltage, speed and location. Key factors driving carbon strip wear and damage include the contact force in the carbon strip-catenary interface, power output, electrical arcing, and impacts from ice on the contact wire.
Problem description, tasks and goals
Use maintenance records to identify when the carbon strip was replaced. Combine telemetry data and maintenance data to model carbon strip wear. Perform field measurements of wear and crack-propagation on carbon strips. Compare the performance of different carbon strip thicknesses.
Category to which this degree project corresponds the best:
Vehicles
Type of degree project (can be both)
☒ Master (20 weeks)
☒ Bachelor/Högskoleingenjör (10 weeks)
Language for the thesis
☒ Swedish and/or ☒English
Is Swedish a language requirement?
☒ No, but Swedish is a requirement for future employment.
Possibility to work from our office
☒ Yes ☐ No
Address: Hälsingegatan 49, 113 31 Stockholm
Contact person
Mattias Wang
Role: Vehicle/Maintenance Engineer
Please contact me if you have any questions: mattias.wang@greencargo.com
Vi har riktigt bra förmåner
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Benifex förmånsportal
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Friskvårdsbidrag
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Pension och försäkringar enligt kollektivavtal
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Stora möjligheter till karriärutveckling
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Utbildning & utveckling via vår interna plattform
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Ersättning för läkarvård och läkemedel
Några av våra medarbetare
Om företaget
Green Cargo is Sweden’s most experienced operator in rail logistics with roots in the origins of Swedish rail traffic. We deliver sustainable logistics solutions and are an important part of Scandinavia’s trade and industry. In 2025, our transport performance amounted to 8.6 billion net tonne-kilometres. Nearly 98 percent of our total transport work was carried out using electric locomotives powered by fossil-free electricity. Every weekday, we move 31 million net tonne-kilometres of goods, helping to remove approximately 9,000 truck journeys from the road network.
With 1,600 employees and annual revenue of SEK 4.0 billion (2025), Green Cargo is a key contributor to a more sustainable and efficient transport system.
Visste du att..TOM
TOMDygnet runt transporterar våra godståg råvaror från skogar och gruvor till processindustrins anläggningar och konsumentvaror till detaljhandeln. Logistiksystemet lägger grunden för Sveriges välstånd och konkurrenskraft.
TOMJärnvägstransporter är det mest yt- och energieffektiva och minst miljöbelastande trafikslaget. Varje dygn kör våra lokförare 350 godståg som ersätter i genomsnitt 9000 lastbilar.
TOMEn transport av 23 ton gods med Green Cargos eltåg mellan Malmö kombi och Norrköping kombi (442 km) släpper ut ungefär 1 kilo CO2e med fossilfri el. Om samma mängd gods transporteras med tung lastbil, skulle utsläppen vara cirka 560 kilo CO2e.
TOMGreen Cargos totala transportarbete 2024 (eltåg, dieseltåg och lastbil) gav ett sammanlagt utsläpp på 17 273 ton koldioxid (CO2e). Vårt totala transportarbete uppgick till 9,7 miljarder nettotonkilometer. Om allt gods som Green Cargo transporterade istället hade körts med lastbil hade utsläppet blivit 512 000 ton koldioxid (CO2e).
Mattias Wang | Kontaktperson
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