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 9 of 9 for “"railway tracks"”.
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Dimensional inspection of railway tracks using computer vision
Tesis con mención internacional
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Finite element analysis of railway track under vehicle dynamic impact and longitudinal loads
… increase in the longitudinal load demand in railway tracks. The capacity of longitudinal restraint of existing rail fastening system and its dependency on track parameters affects the future design of rail fastening system. This thesis focuses on investigating numerically these two problems …
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Modelling Transition Zones and Optimal Design Adjoining Tunnels and Bridges
… to smoothen the abrupt stiffness variation along railway transitions and provides a step-by-step design of a multistep transition zone comprising adjoining segments with changing stiffness values, and design optimization guidelines. The influence of stiffness on the track dynamic response applied …
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Modelling and Measurement of the Response of a Beam Interacting with a Polyurethane Foam Foundation
Buildings, railway tracks, drill strings and off-shore pipelines are all modeled as structures on elastic foundations in order to study their response behavior under different conditions. Flexible polyurethane foams used for cushioning in the furniture and automotive industries also serve as …
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Monitoring railway rail roughness using on-train vibration measurements
The growth of roughness on the rails of railway tracks is a significant problem that leads to increased noise and vibration emissions that affect residents near the railway. This study is devoted to a novel method of measuring rail roughness to inform maintenance operations. Unlike existing …
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Development Of A Slide-Rolling Contact Fatigue Tester
… in many applications such as bearings, gears and railway tracks. In recent years, research companies have developed finishing processes which aim to improve a component's contact fatigue life. One such process has been patented by REM Chemicals in Texas. Preliminary contact fatigue tests have …
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Seismic Resilience of Rail-Truck Intermodal Freight Transportation Networks
Railway and highway networks constitute the backbone of the US freight transportation network, and the rail-truck intermodal combination constitutes a popular emerging mode of freight transport. Although components of the intermodal network, namely railway bridges, highway bridges, roadways, …
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Nonlinear vibration of beams and plates resting on elastic foundations having nonlinear stiffness properties
… of buildings, railroads, airports, highways, and railway tracks. For example, when studying railway track behaviour, a beam on an elastic foundation (BoEF) theory is often employed, and the study can be extended to track dynamics, noise, and vibration. Winkler (1867) was the first to introduce the …
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Návrh rekonstrukce traťového úseku Kunovice - Staré Město u Uherského Hradiště v km 0,3 - 2,0
Cílem bakalářské práce je návrh úpravy geometrických parametrů koleje a návrh rekonstrukce železničního svršku v úseku Kunovice - Staré Město u Uherského Hradiště v km 0,3 - 2,0. Úsek začíná napojením na výhybku v železniční stanici Kunovice a končí v železniční stanici Uherské Hradiště. Součástí …