Avancerad sökning
Visar resultat 1 - 5 av 6 avhandlingar som matchar ovanstående sökkriterier.
1. Characterisation of airborne particles from rail traffic
Sammanfattning : Since the investigation of wear particles in rail transport started in late-1910s, the high mass concentration of these particles has raised worries among researchers concerned with air quality. However, effective action has yet to be taken because of lack of relevant knowledge. LÄS MER
2. Ab initio Interlayer Potentials For Metals and Alloys
Sammanfattning : Many modern materials and material systems are layered. The properties related to layers are connected to interactions between atomic layers. In the present thesis, we introduce the interlayer potential (ILP), a novel model potential which fully describes the interaction between layers. LÄS MER
3. Magneto-sensitive elastomers in vibration isolation
Sammanfattning : Vibration isolators made of rubber are used in numerous engineeringapplications to isolate structures from undesirable effects of vibrations.However, once a vibration isolator is installed in an application, it is not possible to modify its characteristics to adjust to changing conditions. LÄS MER
4. Regional Intermodal Transport Systems : Analysis and Case Study in the Stockholm-Mälaren Region
Sammanfattning : The global trend of urbanization is evident and also valid in Sweden and for the Stockholm-Mälaren region, also referred to as the Mälaren valley, a region consisting of metropolitan Stockholm and areas around the lake of Mälaren. In this context, efficient urban freight transportation has emerged as essential for sustainable development of urban areas. LÄS MER
5. Long freight trains and long-term rail surface damage
Sammanfattning : Track damage due to progressively increasing tonnage, especially due to longer and heavier freight trains, is one of the major problems faced in the European rail sector. In this context, to stay competitive, optimal track maintenance practices, track-friendly vehicles and safe operations of long freight trains assume prominence. LÄS MER