Sökning: "heavy haul"

Visar resultat 16 - 20 av 21 avhandlingar innehållade orden heavy haul.

  1. 16. Evaluation of wayside condition monitoring technologies for condition-based maintenance of railway vehicles

    Författare :Robert Lagnebäck; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Sammanfattning : Luossavaara-Kiirunavaara AB (LKAB) is an iron ore mining company in Sweden that strives to be one of the leading suppliers of iron ore products. In the chain from mining to end customers, transportation efficiency plays a mayor role in the outcome of the company's total financial result. LÄS MER

  3. 17. Train Based Automated Inspection for Railway Fastening System

    Författare :Praneeth Chandran; Matti Rantatalo; Rolf Dollevoet; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rail fastening system; clamps; visual inspection; differential eddy current sensor; machine learning; anomaly detection; Drift och underhållsteknik; Operation and Maintenance;

    Sammanfattning : Rail transportation is a sustainable mode of transportation and is a key enabler of the socio-economic development of modern society through passenger and freight services. Growth in overall transport demand has led to railways experiencing higher demand on operational capacity, service quality, and safety. LÄS MER

  4. 18. Curving performance and nonlinear dynamic behaviour of freight cars with three-piece bogies

    Författare :Ansel Berghuvud; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datorstödd maskinkonstruktion; Computer Aided Design;

    Sammanfattning : This thesis considers modelling and simulation of the dynamic interaction between freight cars and railway track. The aim of the work is to study and enhance the knowledge and understanding of the nonlinear interaction for different heavy haul freight vehicle concepts of ore wagons applied at Malmbanan/Ofotbanen in northern Sweden and Norway. LÄS MER

  5. 19. Assessing Energy Use and Carbon Emissions to Support Planning of Environmentally Sustainable Earthmoving Operations

    Författare :Hassanean S.H Jassim; Thomas Olofsson; Nashwan Dawood; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy use; CO2 emissions; earthmoving operation; operational characteristics; project conditions; selection equipment configuration; Byggproduktion och teknik; Construction Management and Building Technology;

    Sammanfattning : Road and infrastructure projects have significant environmental impacts due to their high energy consumption and CO2 emissions. Among it, earthmoving operations contribute disproportionately to these impacts because of their intensive use of heavy machinery. LÄS MER

  7. 20. Data-driven models for railway track geometry maintenance

    Författare :Hamid Khajehei; Alireza Ahmadi; John Andrews; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Data-driven models; degradation; maintenance; tamping; track geometry; planning and scheduling; railway infrastructure; Drift och underhållsteknik; Operation and Maintenance;

    Sammanfattning : Railways are currently experiencing higher demands on safety, infrastructure performance, network capacity and service quality, etc. As a result, a high level of track availability, service quality and infrastructure robustness against unexpected events is required, at reduced cost, to meet the demands. LÄS MER