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 17 of 17 for “"railroad engineering"”.
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Restructuring a railroad engineering economics model : responding to management needs
… Institute of Technology, Dept. of Civil Engineering, 1989.
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Development of machine-vision technology for inspection of railroad track
Railroad engineering practices and Federal Railroad Administration (FRA) regulations require track to be inspected for physical defects at specified intervals, which may be as often as thrice per week. These inspections are conducted visually by railroad track inspectors, but due to practical …
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Quantifying the effects of an increasingly warmer climate with a view to improving the resilience of Great Britain's railway network: Is a new stressing regime the answer?
The existing temperature profile in Great Britain determines the stress free temperature of continuous welded rail on the railway network, this ensures that cold-related tension cracks and heat-related rail buckles are kept within tolerable levels. It is predicted that winters will become warmer …
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Simulation of energy efficiency improvements on commuter railways
Railway networks consume large amounts of energy and, as a result, are the cause of a significant amount of CO\(_2\) and other harmful gas emissions. British railways strive to comply with objectives set by the European Rail Research Advisory Council and the Committee on Climate Change. …
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Relocation of a portion of the Delaware Lackawanna and Western R.R. main line
Made available in DSpace on 2017-11-30T22:11:12Z (GMT). No. of bitstreams: 2 5972745.pdf: 4511650 bytes, checksum: 48a5f340b416f15fe0eaf3aa35328b90 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1910
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Strategic change in the UK railway network through reorganization and major projects
Immense effort is expended by the likes of the Office for Rail Regulation, Transport Statistics Great Britain and the Office of National Statistics in generating extensive time series data for the various measures of passenger numbers, freight activity, performance and much more. Unfortunately, the …
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Characterising the Mechanical Loads Acting on Nuclear Packages during Rail Transportation
The safe transportation of new and spent nuclear fuel is an essential part of the nuclear fuel cycle. The aim of this thesis was to obtain a more thorough understanding of the mechanical loading acting on heavy nuclear packages during rail transportation. There were two motivating factors for this …
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A generic fault detection and diagnosis approach for pneumatic and electric driven railway assets
The railway assets studied in this project, are those widely distributed pieces of equipment that are critical to the dependable operation of the railway system. A failed asset is likely to cause significant delay to rail services, and may even place the system into an unsafe state. A generic fault …
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Operational industrial fault detection and diagnosis: railway actuator case studies
Modern railways are required to operate with a high level of safety and reliability. The weakest components are those which have the highest safety requirements and the lowest inherent reliability. Single-throw mechanical actuators, such as powered train doors, trainstops, level crossing barriers …
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Optimising AC electric railway power flows with power electronic control
The latest generation of AC-fed traction drives, employing high-speed switching devices, is able to control the reactive power drawn from the overhead line by each equipment. If the conditions at each locomotive or train could be fed back to a central control point, it is possible for a centrally …
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Multifaceted approach for the analysis of rail pad assembly response
… response is important for the improvement of railroad superstructure component design and performance. In this study, the lateral displacement of this component with respect to the rail base and rail seat is analyzed. Additionally, the development of an analytical tool (I-TRACK) based on …
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Metro traffic optimisation accounting for the disbenefit of halting between stations
Computerised regulation for disturbed traffic in metro-type railways is proposed. Previous work has used optimisation techniques to minimise disbenefits to passengers, such as waiting time and journey time, in the objective function. The particular disbenefit of trains being halted between stations …
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Field test program of the concrete crosstie and fastening system
To adequately satisfy the demands placed on North America’s railway infrastructure through ever increasing freight tonnages and development of its high speed rail program, the design and performance of concrete crossties and elastic fastening systems must be upgraded. As a part of a study aimed at …
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Quantitative analyses of freight train derailments
Railroad safety analysis encompasses several areas, one of which is freight train risk analysis. There are various types of freight train accidents including derailments, collisions, highway-rail grade crossing incidents, and others. The mainline freight train derailment rate of the major U.S. …
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Ballast condition and degradation evaluation using computer vision techniques: Algorithms and applications
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Ballast condition and degradation evaluation using computer vision techniques: Algorithms and applications
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms