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.
Results
Showing 1 to 20 of 30 for “"Derailment"”.
-
Probability of derailment under earthquake conditions
A quantitative assessment of the probability of derailment under earthquake conditions is presented. Two derailment modes are considered: by vibratory motion - during the ground motion - and by permanent track deformation - after the motion ended. Criteria for derailment that apply to both modes …
-
Regional seismic risk of railway system including derailment consequences
… evaluate the seismic risk of railway networks, a derailment consequence model and a regional approach are developed The consequence model estimates the casualty and fatality rates for passengers as a function of train speed and includes two sub-models. The first sub-model, which is for the case …
-
Quantitative analyses of train derailment probability at highway-rail grade crossings
… for grade crossing incidents to cause train derailments and the consequent casualties to passengers and crew members, property damage, and release of hazardous materials. In contrast to the large body of research devoted to understanding the impact of crossings on highway users, almost no …
-
Getting Off Track: Roanoke, Altoona and the Derailment of Norfolk Southern
Martinsville, Virginia lost its textile industry to Mexico. High Point, North Carolina lost its furniture business to Asia. Pittsburgh lost Steel, Detroit lost auto-making, Mississippi lost cotton, and West Virginia lost coal. These once booming mono-industrial communities, competitive in a global …
-
Estimating the conditional derailment probability of release (CDPR) of tank cars in freight train derailments
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
-
Quantitative analyses of freight train derailments
… 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. Railroads (Class I) declined almost 50% over the past decade. Nevertheless, derailments remain the most frequent …
-
Optimal strategies to improve railroad train safety and reduce hazardous materials transportation risk
… presents analytical models to analyze train derailment probability and severity, evaluate hazardous materials release risk and identify optimal solutions to efficiently reduce the risk. This research is organized into three principal parts: derailment analysis, risk analysis and decision …
-
Northern San Francisco Bay Ecological Risk Assessment: Potential Crude by Rail Incident
… into the Northern San Francisco Bay from a train derailment. This assessment was based on the risk of crude by rail derailments into the San Francisco Bay; in 2014, California oil refineries imported over 240 million gallons of Bakken crude oil by rail for processing. A hypothetical scenario was …
-
Die Gesetzmäßigkeiten des Fahrwerklaufs erprobter Multigelenk-Niederflurstadtbahnwagen
… track design regulations with regard to the derailment safety, and• the passenger comfort in curve entry transitions.For the latter analysis a general distinction was made between two design variants: on the one hand the curve entry for tracks within the street, without transition and …
-
Axle burn-off and stack-up force analyses of a railroad roller bearing using the finite element method
… industry. A bearing-related failure can cause derailment and result in millions of dollars in damage. The bearings used in railway applications are almost exclusively tapered roller bearings and are composed of a two-row assembly with a single element containing the outer race for both rows of …
-
Factors affecting probabilistic risk assessment of transportation of hazardous material by rail
… The results indicate that prevention of derailment itself is the most important risk reduction measure, followed by preservation of the structural integrity of containers, should derailment occur. However, various factors affect the perception of operational risk. These factors depend on …
-
The dynamic behaviour of rail vehicles operating at high speeds for manriding in British coal mines
… the guidance, the ride, and the likelihood of derailment of the main classes of manriding trains used in British coal mines. The outcome of the modelling compares favourably with the results of tests carried out on actual vehicles. The investigation has shown that the safe speed at which trains …
-
Quantitative analyses of unit train safety and railroad tank car implementation policy
… large volume of traffic, accidents still occur. Derailments are the most common type of train accident recorded in the Federal Railroad Administration’s Rail Equipment Accident/Incident database. The research presented in this thesis focuses on derailments and releases of hazardous materials, …
-
Focal lengths and gravity waves
… lost pace with technical innovation - a derailment, so to speak, with nefarious implications for the present-day filmmaker. The emphasis is on lenses - the provocative "camera eye" - and sound recording equipment - which proved to be the rate-limiter of technical advance. This thesis …
-
VILIFYING OBAMACARE: CONSERVATIVE TROPES OF VICTIMAGE IN THE 2009 HEALTH CARE DEBATES
… political actors who contributed to the derailment of the health care reform movement. This project applies Burkean theories about identification and vilification to examine the destructive power that conservative tropes and victimhood rhetoric have on the ability to engage in productive …
-
Rail and Tie
… protagonists, all survivors of the same train derailment and crash, and each of the main characters walks away from that trauma suffering from their own version of Post-traumatic Stress Disorder. An older couple, Marvin and Ruby, are forced to retire and must get to know each other all over …
-
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 …
-
Modular track panels for improved safety in the mining transportation industry
… injuries, fires initiated from sparks during derailment, and costly downtimes. Modular track panels (resembling the ladder track systems used in Japan) were designed and tested for bending behavior and load sharing characteristics, between track modules and also between rails, to improve …
-
The application of a person-oriented criterion-related configural approach to the relationship between personality traits and work behaviors
… of performance, promotion potential, and derailment potential) in Study 2. Overall the present results show that the relative contribution of personality level and personality profile mostly cross-validated within a given sample, but there also appeared to be variability in both the form …
-
Executive Effectiveness Profile Instrument Development and Validation
… have been found to be a major cause of executive derailment. Despite the enormous value of feedback, there is a paucity of proven methodologies for providing executives with constructive feedback on the effectiveness of their behavior. Consequently, the objective of this research was to design and …
Page 1 of 2