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Visar resultat 1 - 5 av 10 uppsatser som matchar ovanstående sökkriterier.
1. Pantograph-catenary wear modelling using dynamic simulation
Master-uppsats, KTH/Väg- och spårfordon samt konceptuell fordonsdesignSammanfattning : Wear condition modelling is a research topic which lately has increased in popularitydue to its significance to the railway industry. Large sums are spent on maintenanceof the network every year, which has generated a demand for understanding and predictingwear mechanisms in a multitude of components within both railway vehiclesand infrastructure. LÄS MER
2. Improving the validation of a railway vehicle model in the virtual certification process
Master-uppsats, KTH/SpårfordonSammanfattning : Before vehicles can be placed in service it has to complete an authorisation process. At the moment,this process is largely depended on tests. This is, however, an expensive and long process. With new technologies and improved simulations this process can be shortened and the costs can be lowered. LÄS MER
3. Användning av tillståndsövervakningssystem för underhåll av järnvägsfordon
Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)Sammanfattning : Transportbehovet ökar kontinuerligt och järnvägen spelar en allt viktigare roll i framtidens gods- och persontransporter. Klimatmålen gör att det ställs allt högre krav på mer effektiva transportlösningar. För att kunna uppfylla dessa krav behöver nya metoder och ny teknik utvecklas. LÄS MER
4. Fault diagnosis of axlebox roller bearings of high speed rail vehicles based on empirical mode decomposition and machine learning
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : Axlebox bearings are one of the most critical components of a rail vehicle with regard to safety. An axlebox bearing that breaks during operation can be dangerous for the passengers and expensive for the operator. In-service failure of axlebox bearings has been the cause of many catastrophic accidents. LÄS MER
5. APPLIKATION AV CYKELLADDNING OMBORD PÅ JÄRNVÄGSFORDON : Konceptutveckling av elcykelladdning ombord på Öresundståget Contessa X31 i samarbete med Bombardier Transportation
Uppsats för yrkesexamina på grundnivå, Mälardalens högskola/Akademin för ekonomi, samhälle och teknikSammanfattning : There is a great need to reduce the use of fossil-fueled road transport. In order to encourage the use of public transport, opportunities for the application of electrical charging stations for e-bikes aboard railway vehicles were analyzed. LÄS MER