Search for dissertations about: "rail infrastructure"
Showing result 1 - 5 of 66 swedish dissertations containing the words rail infrastructure.
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1. Integrated Product Service Offerings for Rail and Road Infrastructure : Reviewing Applicability in Sweden
Abstract : This research aims to explore and propose a more effective management of rail and road infrastructure and the possibility of a more resource-efficient road and rail infrastructure by applying business models based on performance and a life-cycle perspective.There is a lack of efficiency in the Swedish rail and road infrastructure industries - at the same time as the availability of the rail tracks and roads is essential. READ MORE
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2. Long-term rail damage evolution in railway crossings
Abstract : To accommodate the passage of wheels in intersecting traffic routes, fixed railway crossings have discontinuous rails leading to an intense load environment due to repeated wheel-rail impacts. This gives rise to high costs associated with repair and maintenance of the rails in the crossing. READ MORE
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3. Non-destructive measurement of near-surface cracks in railheads : with focus on ultrasonic inspections
Abstract : Near-surface cracks in railhead that caused by rolling contact fatigue (RCF) is one of a kind rail defects that degrade rail track quality. Dependent on the trail load, the cracks can reach to severe level quickly. READ MORE
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4. Simulation of rail traffic : Methods for timetable construction,delay modeling and infrastructure evaluation
Abstract : This thesis covers applications and proposes methods for using simulation in a more effectiveway and also in a wider context than normally used. One of the proposed methods deals withdelay modeling that can be used in a calibration process. READ MORE
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5. Wheel–Rail Impact Loads and Track Settlement in Railway Crossings
Abstract : Turnouts (Switches & Crossings, S&C) are critical components of a railway track requiring regular maintenance and generating high life cycle costs. A main driver for the high maintenance costs is the need to repair and replace switch rails and crossings as these components are subjected to a severe load environment. READ MORE