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Showing result 1 - 5 of 14 essays matching the above criteria.

  1. 1. Railway Fastener Fault Detection using YOLOv5

    University essay from Uppsala universitet/Avdelningen för visuell information och interaktion

    Author : Alva Efraimsson; Elin Lemón; [2022]
    Keywords : Fastener Fault Detection; Object Detection; YOLOv5; Machine Learning; Railway Maintenance; Proactive Maintenance;

    Abstract : The railway system is an important part of the sociotechnical society, as it enables efficient, reliable, and sustainable transportation of both people and goods. Despite increasing investments, the Swedish railway has encountered structural and technical problems due to worn-out infrastructure as a result of insufficient maintenance. READ MORE

  3. 2. Influence of load distribution on trough bridges

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Jacob Gustafsson; [2021]
    Keywords : Bridge; Trough bridge; Concrete; Load distribution; Ballast;

    Abstract : There are approximately 4000 railway bridges in Sweden and a common construction type is the short span concrete trough bridge. With the current standards the load distribution through ballast is assumed to be uniformly distributed with a distribution slope of 2:1 according to the Swedish Administration of Transport or 4:1 according to Eurocode 1. READ MORE

  4. 3. Railway sleeper modelling with deterministic and non-deterministic support conditions.

    University essay from KTH/Väg- och banteknik

    Author : Shan Li; [2012]
    Keywords : railway sleeper; sleeper-ballast interaction; random support condition; finite element modelling; Neural Network;

    Abstract : Railway sleepers have important roles in the complex railway system. Due to different loading condition, poor maintenance of sleeper or bad quality of ballast, a random load distribution along the sleeper-ballast interface may occur. READ MORE

  5. 4. Equivalent Dynamics Model of Ballasted Track Bed

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Said Daoud; Xie Guowei; Liu Xiaoming; [2012]
    Keywords : ABAQUS; Ballast; modeling; simulation; train-track; fracture mechanics;

    Abstract : Increase of track maintenance costs and change of track geometry are due to the vibration of ballasted railway. The aim of this thesis work is to model train-track system as a multiply degree of freedom systems by Lump Parameter Method. READ MORE

  6. 5. 3D-models of railway track for dynamic analysis.

    University essay from KTH/Transportvetenskap

    Author : Huan Feng; [2011]
    Keywords : track dynamics; railway track modelling; finite element analysis; receptance;

    Abstract : In recent decades, railway transport infrastructures have been regaining their importance due to their efficiency and environmentally friendly technologies. This has led to increasing train speeds, higher axle loads and more frequent train usage. READ MORE