Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Rail wheel"”.
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Rail Wheel Noise in Road to Rail Maintenance of Way Vehicles
Railroads across North America use railgear devices to enable street legal vehicles to travel on the same railroad tracks used by trains. Thousands of these vehicles are used to regularly inspect and maintain the infrastructure that keeps the North American economy running. A common complaint when …
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Correlation-Based Detection and Classification of Rail Wheel Defects using Air-coupled Ultrasonic Acoustic Emissions
Defected wheel are one the major reasons endangered state of railroad vehicles safety statue, due to vehicle derailment and worsen the quality of freight and passenger transportation. Therefore, timely defect detection for monitoring and detecting the state of defects is highly critical. This …
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The Application of Laser Technology for Railroad Top of Rail (TOR) Friction Modifier Detection and Measurements
… optical sensors for the purpose of determining rail lubricity of top-of-rail friction modifier is investigated in this research. A literature review of optical sensors as they relate to detecting thin layers is presented, as well as a literature review of the significant aspect of surface …
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Investigation of Novel Displacement-Controlled Hydraulic Architectures for Railway Construction and Maintenance Machines
… at showing how to transform hydraulic systems of railway multi-actuator machinery characterized by inefficient state-of-the-art systems into the 21st Century. Designing machines that are highly efficient, productive, reliable, and cost affordable represents the target of this research. In this …
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Determination of load path through concrete crosstie and fastening system: a laboratory and field investigation
US railways move more freight (measured in tonne-kms) by rail than by any other means. This is done over an extensive network of primarily private freight railway lines that also transport passenger trains. To enable the expansion of high-speed passenger rail service using shared passenger/freight …
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Thermomechanical and Vibrational Fatigue Life Assessment of Railway Wheels
Rail wheel failures can lead to derailment of trains, cost lives and billions of dollars to the railway industry. Therefore, it is important to understand the failure behavior of critical components of the train, especially the ones which are exposed to extreme weather conditions. This …
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Innovative Design Concepts for Insulated Joints
… develop new and innovative designs for insulated rail joints for improved life cycle and higher cost effectiveness. The research focuses on using electrically insulating materials that replace the epoxy used in current bonded insulated joints. Insulated joints (commonly known as "IJ") are widely …