Rozprawy doktorskie na temat „Rail”
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Holmlund, Gabriel. "RFID in Rail : RFID tracing of rail-borne cargo". Thesis, Mittuniversitetet, Avdelningen för informations- och kommunikationssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-25824.
Pełny tekst źródłaSoenneker, Richard (Richard Joseph) 1978. "Design of a bipolar rail-to-rail operational amplifier". Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/86734.
Pełny tekst źródłaIncludes bibliographical references (leaves 66-67).
by Richard Soenneker.
M.Eng.and S.B.
Hudzik, Martin. "Návrh Rail-to-Rail proudového konvejoru v technologii CMOS". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242143.
Pełny tekst źródłaOrvnäs, Anneli. "Simulation of Rail Wear on the Swedish Light Rail Line Tvärbanan". Thesis, KTH, Spårfordon, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-26310.
Pełny tekst źródłaQC 20101123
Kumar, Saurabh. "A study of the rail degradation process to predict rail breaks". Licentiate thesis, Luleå tekniska universitet, Drift, underhåll och akustik, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18226.
Pełny tekst źródłaGodkänd; 2006; 20061212 (ysko)
Pang, Tao, i tony_pang@hotmail com. "Studies on Wheel/Rail Contact Impact Forces at Insulated Rail Joints". Central Queensland University. Centre for Railway Engineering, 2008. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20080410.154708.
Pełny tekst źródłaMurty, Anjali. "Highly linear, rail-to-rail ICMR, low voltage CMOS operational amplifer". Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/14884.
Pełny tekst źródłaMorris, John D. (John David) 1978. "Improving toggle rate in a rail-to-rail comparator output stage". Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/16854.
Pełny tekst źródłaIncludes bibliographical references.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
The demand for high-speed components has driven an increase in the speed of analog comparators, a building block for many analog circuits. This paper describes the modification of one of Linear Technology's low-cost, high-speed comparators to increase the output toggle rate beyond the one hundred megahertz range. The essential modifications to the output stage mainly relate to overcoming quasi-saturation of the output devices by extracting unwanted, stored base charge. Additional features were added into a dual comparator package with a tiny footprint to increase consumer interest and to diversify it from other comparators in Linear Technology's line. A final circuit design and physical silicon layout were designed using computer design tools, and the IC was fabricated and tested. The first silicon was tested extensively and worked successfully with only minor undesired discrepancies that were deemed acceptable. The LT1715 design was successful since the design itself accomplished all the desired specifications and the part is now available for sale.
by John D. Morris.
M.Eng.
Naini, Srikar Reddy. "PING-PONG AUTO-ZERO AMPLIFIER WITH RAIL-TO-RAIL OUTPUT BUFFER". University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1537224512595497.
Pełny tekst źródłaMcNeal, Cedric J. "Barrel wear reduction in rail guns : the effects of known and controlled rail spacing on low voltage electrical contact and the hard chrome plating of copper-tungsten rail and pure copper rails /". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FMcNeal.pdf.
Pełny tekst źródłaThesis advisor(s): William B. Maier II, Richard Harkins. Includes bibliographical references (p. 45-46). Also available online.
Lundmark, Jonas. "Rail grinding and its impact on the wear of wheels and rails". Licentiate thesis, Luleå : Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1757/2007/37/index.html.
Pełny tekst źródłaTelliskivi, Tanel. "Wheel-rail Interaction Analysis". Doctoral thesis, KTH, Machine Design, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3532.
Pełny tekst źródłaA general approach to numerically simulating wear in rollingand sliding contacts is presented in this thesis. A simulationscheme is developed that calculates the wear at a detailedlevel. The removal of material follows Archards wear law,which states that the reduction of volume is linearlyproportional to the sliding distance, the normal load and thewear coefficient. The target application is the wheel-railcontact.
Careful attention is paid to stress properties in the normaldirection of the contact. A Winkler method is used to calculatethe normal pressure. The model is calibrated either withresults from Finite Element simulations (which can include aplastic material model) or a linear-elastic contact model. Thetangential tractions and the sliding distances are calculatedusing a method that incorporates the effect of rigid bodymotion and tangential deformations in the contact zone.Kalkers Fastsim code is used to validate the tangentialcalculation method. Results of three different sorts ofexperiments (full-scale, pin-on-disc and disc-on-disc) wereused to establish the wear and friction coefficients underdifferent operating conditions.
The experimental results show that the sliding velocity andcontact pressure in the contact situation strongly influencethe wear coefficient. For the disc-on-disc simulation, therewas good agreement between experimental results and thesimulation in terms of wear and rolling friction underdifferent operating conditions. Good agreement was alsoobtained in regard to form change of the rollers. In thefull-scale simulations, a two-point contact was analysed wherethe differences between the contacts on rail-head to wheeltread and rail edge to wheel flange can be attributed primarilyto the relative velocity differences in regard to bothmagnitude and direction. Good qualitative agreement was foundbetween the simulated wear rate and the full-scale test resultsat different contact conditions.
Keywords:railway rail, disc-on-disc, pin-on-disc,Archard, wear simulation, Winkler, rolling, sliding
Jilabi, Abdulsameea. "Welding of rail steels". Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/welding-of-rail-steels(b9d907ef-45fc-4649-8c2f-9239a121abe0).html.
Pełny tekst źródłaKawasaki, Junji 1968. "Estimations of rail irregularities". Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8543.
Pełny tekst źródłaIncludes bibliographical references (leaves 74-76).
Inspection cars that have been used to measure rail irregularities are costly and need operators. This thesis proposes a method to estimate rail irregularities by measuring accelerations of a passenger car instead of direct measurement by using a conventional inspection car. Using a System Identification technique and data obtained by simulations based on a three-dimensional rail vehicle model with actual rail irregularities, the proposed method identifies an inverse system where inputs are accelerations of a vehicle and outputs are rail irregularities. The resulting model is assessed through comparing the estimated irregularity with the actual irregularity. Validation results show that the estimate agree well with the actual irregularity for the Vertical Irregularity. Though the estimation error for the Lateral Irregularity is larger than that for the Vertical Irregularity, the error is acceptable form a practical point of view. The quality of the estimation is evaluated quantitatively by using the Mean Square Error. In addition, resolution of the estimation is presented in order to demonstrate the accuracy of the estimation. Model uncertainties are assessed for a practical implementation. The effects due to two major uncertainties, mass variations and speed variations, are evaluated by using the Singular Value Decomposition in order to present the limitations of the estimation using a nominal model. In addition, this thesis proposes a compensation method for mass variations and speed variations.
by Junji Kawasaki.
S.M.
Ray, Arunim. "Niobium microalloyed rail steels". Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/265387.
Pełny tekst źródłaVieira, Filipe Costa Beber. "Amplificador de Instrumentação em Modo Corrente com entrada e saída Rail-to-Rail". Universidade Federal de Santa Maria, 2009. http://repositorio.ufsm.br/handle/1/5347.
Pełny tekst źródłaEsta dissertação tem como objetivo o desenvolvimento de um amplificador de instrumentação em modo corrente com uma ampla faixa de entrada em modo comum. Esta característica é obtida graças ao emprego de estágios de amplificação rail-to-rail na entrada e a geração do sinal de saída através do espelhamento da corrente diretamente dos gates dos transistores do estágio ao invés da alternativa clássica, onde espelhos são ligados em série e degradam a excursão do sinal de saída. Com esta proposta, é possível a implementação de ampops com entrada e saída rail-to-rail. A principal contribuição deste trabalho é analisar as vantagens e desvantagens da utilização destas soluções na implementação de um amplificador de instrumentação com entrada rail-to-rail. A funcionalidade da topologia proposta é demonstrada através dos resultados medidos de um circuito integrado fabricado. Este primeiro protótipo, apesar do bom funcionamento em toda a faixa de entrada em modo comum, apresentou valores insatisfatórios de CMRR (Common Mode Rejection Ratio) e de VOS (Tensão de offset), o que levou a um aprofundamento no estudo e modelagem destas características. A partir disto, o circuito foi re-projetado e os resultados de simulação demonstram melhorias bastante significativas em suas características.
Sakurai, Satoshi. "Design of rail-to-rail CMOS operational amplifiers for a 3-V supply /". The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487854314870488.
Pełny tekst źródłaAl-Tony, Fa. "The marginal social cost of road and rail : implications for rail investment and pricing". Thesis, Cranfield University, 1995. http://dspace.lib.cranfield.ac.uk/handle/1826/3862.
Pełny tekst źródłaAl-Tony, Fathy El-Sayed. "The marginal social cost of road and rail: Implications for rail investment and pricing". Thesis, Cranfield University, 1995. http://hdl.handle.net/1826/3862.
Pełny tekst źródłaVellturo, Christopher Allan. "The deregulation of the U.S. rail industry : efficiency and equity in attaining rail viability". Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14279.
Pełny tekst źródłaLacerda, Fabio de. "Projeto de um amplificador operacional CMOS de baixa tensão do tipo rail-to-rail". [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/260130.
Pełny tekst źródłaDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
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Mestrado
Lacerda, Fábio de, i Instituto de Engenharia Nuclear. "Projeto de um amplificador operacional CMOS de baixa tensão do tipo rail-to-rail". Instituto de Engenharia Nuclear, 2001. http://carpedien.ien.gov.br:8080/handle/ien/1906.
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Este trabalho descreve o procedimento de projeto de amplificadores operacionais em tecnologia CMOS. Para isto, foram objetos deste processo dois amplificadores com especificações distintas. O primeiro foi o amplificador canônico com compensação interna do tipo Miller, cujas especificações incluíram a tensão de alimentação de 3V, o ganho mínimo de malha aberta em baixas freqüências de 60dB e a freqüência de ganho unitário de 4MHz para uma carga externa de 10kΩ em paralelo com 10pF. O segundo, já aplicando o aprendizado que resultou do primeiro, foi um amplificador operacional do tipo rail-to-rail na entrada e na saída, com especificações mais exigentes: tensão de alimentação de 3V, ganho mínimo de malha aberta em baixas freqüências de 80dB e freqüência de ganho unitário de 10MHz para carga externa de 10kΩ em paralelo com 10pF. Os resultados obtidos a partir de protótipos fabricados em tecnologia CMOS de 0,8µm para o primeiro amplificador e 0,6µm para o segundo foram bastante próximos às especificações. Por exemplo, as excursões de entrada e de saída do segundo amplificador mostraram-se perfeitamente compatíveis com amp-ops rail-to-rail típicos enquanto as demais características medidas confirmaram que o procedimento de projeto adotado foi bastante adequado.
This dissertation describes the process of designing operational amplifiers in CMOS technology. To accomplish this, the author focused on two amplifiers with distinct specifications. The first one was the canonical amplifier with internal Miller compensation, whose specifications included the nominal power supply of 3V, minimum open-loop low-frequency gain of 60dB and unity-gain frequency of 4MHz driving an external load of 10kΩ in parallel with 10pF. The second one, exploiting the experience obtained from the previous amplifier, was an operational amplifier with rail-to-rail input and output with more rigorous specifications: 3V power supply, minimum open-loop low-frequency gain of 80dB and 10MHz unity-gain frequency driving an external load of 10kΩ in parallel with 10pF. Prototypes of the canonical amplifier were fabricated in 0.8µm CMOS technology while the rail-to-rail amplifier was implemented in 0.6µm CMOS technology. Experimental results were in very good agreement with the specifications. For example, input and output signal swings from the second amplifier proved to be fully compatible with typical rail-to-rail op-amps while the remaining characteristics confirmed that the design process was very adequate.
Pratikakis, Nikolaos. "Mathematical modeling of rail gun". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Sep%5FPratikakis.pdf.
Pełny tekst źródłaThesis Advisor(s): Kwon Young. "September 2006." Includes bibliographical references (p. 77-78). Also available in print.
Uff, Jamie Colin. "Rail corridor asset mapping system". Thesis, University of Newcastle Upon Tyne, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492083.
Pełny tekst źródłaHeunis, Johannes Jacobus. "Material models for rail pads". Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6643.
Pełny tekst źródłaENGLISH ABSTRACT: The vibrations and noise “pollution” that rail vehicles produce have become of particular concern in recent years. More pressure is being placed on operators of trains and trams (especially those operating in urban environments) to reduce their impact on neighbouring infrastructure. This project investigated the infrastructure available for vibration and noise mitigation and generated material models for some of the materials used in these types of rail infrastructure. The most common type of rail infrastructure used in South Africa is ballasted sleepers. Rail pads are sometimes used to reduce the transmitted vibration of these sleepers; this study focused on the materials used in the manufacture of these pads. Since most of these materials can be described as resilient/viscoelastic, the study of literature regarding these materials is essential within the scope of this project. Models found in literature were adapted by the addition of a non-linear stiffness element to account for the material behaviour at higher preloads. Three commercially available materials were tested and optimisation algorithms applied to determine their material coefficients (damping and stiffness), focusing on the preload and frequency dependency of these coefficients.
AFRIKAANSE OPSOMMING: Die vibrasie en geraas “besoedeling” wat spoor voertuie genereer het in die in die afgelope paar jare van kritieke belang geword. Meer druk word op operateurs van treine en trems geplaas (veral die operateurs met operasies in stedelike gebiede) om hulle impak op aangrensende infrastruktuur te verminder. Hierdie projek is dus daarop gemik om te bepaal watter infrastuktuur beskikbaar is vir die vermindering van vibrasie en geraas asook die ontwikkeling van materiaal modellle vir sommige van die materiale wat gebruik word in hierdie tipes van spoor infrastruktuur. Die mees algemene spoor infrastruktuur wat gebruik word in Suid-Afrika is dwarslêers met ballas. Spoor blokke word soms gebruik om die oordrag van vibrasies te verminder vir hierdie dwarslêers en daarom het hierdie studie fokus geplaas op die materiale wat gebruik word in die vervaardiging van hierdie blokke. Aangesien die meeste van hierdie materiale beskryf kan word as veerkragtig/visco, is 'n literatuurstudie oor hierdie materiale noodsaaklik binne die bestek van hierdie projek. Modelle wat gevind is in die literatuur is aangepas deur 'n nie-lineêre styfheids element by te voeg wat voorsiening maak vir die materiale se gedrag by hoër voorspannings. Drie algemene kommersieël beskikbare materiale is getoets en optimeringsprossesse is toegepas om hulle materiaal koëffisiënte (demping en styfheid) te bepaal met die klem geplaas op die voorspanning en frekwensie afhanklikheid van hierdie koëffisiënte.
Baranger, Philippe. "Le rail aux etats-unis". Toulouse 2, 1991. http://www.theses.fr/1991TOU20069.
Pełny tekst źródłaRailways developed at the same time as the american nation did. By the turn of the century, the rail network has spread across the continent. The new system was active in bringing the united states to prominent international status. The mighty railroads, all private ventures, were also a laboratory for the working out of new labour rules, social relationships and entrepreneurial achievements. In the interwar period, their near monopoly as an interior transportation system was challenged by the air and the highway, to which they had to yield some of their ground. In modern times, railroads have had to adjust to new rules, but they remain strong. Throughout those years, the railroad entered the american mind and became a medium to express new conceptions or to rephrase old ones both as history and as an array of cultural symbols, railways have contributed to the making of the national experience
Lau, Kam-lung Darren. "A study of the residential development of the East Rail : implications to the West Rail /". View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38026144.
Pełny tekst źródłaLau, Kam-lung Darren, i 劉錦龍. "A study of the residential development of the East Rail: implications to the West Rail". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B45009016.
Pełny tekst źródłaMa, Qian. "Condition-based maintenance applied to rail freight car components : the case of rail car trucks". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42621.
Pełny tekst źródłaBeal, Rien. "A low voltage rail-to-rail operational amplifier with constant operation and improved process robustness". [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1468063.
Pełny tekst źródłaBabenko, Pavel. "VISUAL INSPECTION OF RAILROAD TRACKS". Doctoral diss., University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4013.
Pełny tekst źródłaPh.D.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Computer Science PhD
Reddy, Venkatarami. "Development of an integrated model for assessment of operational risks in rail track". Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16488/1/Venkatarami_Reddy_Thesis.pdf.
Pełny tekst źródłaReddy, Venkatarami. "Development of an integrated model for assessment of operational risks in rail track". Queensland University of Technology, 2007. http://eprints.qut.edu.au/16488/.
Pełny tekst źródłaLiu, Yat-ming. "External benefits and commuter rail development a case study of KCRC west rail and Tuen Mun /". Click to view the E-thesis via HKU Scholars Hub, 2006. http://lookup.lib.hku.hk/lookup/bib/B37938514.
Pełny tekst źródłaBlock-Schachter, David. "Hysteresis and urban rail : the effects of past urban rail on current residential and travel choices". Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/73697.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (p. 265-284).
Cities are endowed with and accumulate assets based on their unique histories, which in turn define the choice set of the present. These assets range from the natural-sheltered ports, fertile land--to the constructed--concrete and cement, institutions and people. This dissertation examines the effects of one of these assets, urban rail, on residential location and travel behavior, from the era of horsecars and streetcars to the present in Boston. It explores the hysteretical effects of past access to rail--the extent to which the urban system retains the impacts of rail even when it no longer exists. Current density and travel behavior are measurably influenced by past access to rail. The built environment and demographic patterns are found to be the strongest mechanism for these persistent effects. Past access to rail has shaped the city, and that shape has, in turn, affected travel behavior. For density and auto ownership there is an additional measurable effect of past access unexplained by the built environment or demographic patterns. This legacy is plausibly explained by cultural effects--mnemonics--due to personal history, behavioral norms, and zoning/politics. Past access to rail has a stronger effect on density than on auto ownership. The daily choice of modes is almost entirely conditioned on current circumstances. Because places shaped by rail retain its imprint, these findings imply that there is need to consider how policy decisions will influence the city's future choice set. The greatest benefits from the endowments of urban rail are likely where redevelopment costs are low and growth potential is high--particularly light industrial areas near strong central cities. Realizing these changes requires mechanisms that allow and encourage government and private entities to be patient with the long time frames for adaptation to rail infrastructure. One such step is requiring, rather than allowing, supportive zoning and other policies within the Federal Transit Administration's New Starts capital program--including such items as increased as-of-right density, reasonable limits on parking, car sharing, and graduated drivers licensing laws. This research strengthens prior findings that similar approaches can encourage sustainable cultural norms.
by David Block-Schachter.
Ph.D.in Transportation
Archila, Téllez Andrés Felipe. "Intercity passenger rail productivity in the Northeast Corridor : implications for the future of high-speed Rail". Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82340.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references.
The ongoing discussion about the future implementation of high-speed rail (HSR) in the Northeast Corridor (NEC) is full of questions on the feasibility of HSR and the ability of Amtrak to implement it. Indeed, the introduction of the Acela Express in the past decade was not free from operating problems, but even with trains running below their full potential, the Amtrak NEC had substantial market growth. Thus, it is not clear if a true HSR service is feasible in the NEC, and if the current prospects are potentially effective. To evaluate the performance of the NEC and its main services in FY 2002-2012, and make inferences about HSR in the NEC for the next 30 years, we use productivity analysis. We employ a non-parametric single factor productivity (SFP) Törnqvist trans-log index approach with several metrics. We set ridership, revenue, revenue passenger-miles (RPM), and available seat-miles (ASM) as outputs, and operating costs as input. In this way, we provided guidelines and a robust structure of analysis that can be useful for subsequent passenger rail productivity studies. We find that the NEC experienced highly volatile, but considerable productivity growth in FY 2002-2012 (in the range of ~1-3% per year). Amtrak increased its ability to fill up and economically exploit the available capacity, but did not perform equally well on the supply side. Service changes, technical problems with train sets, targeted capital investments, and economic recession and recovery were the main drivers of productivity change. The Acela Express and Northeast Regional were very sensitive to external events, had large economies of scale, and implemented slow adjustment of capacity via rolling stock and infrastructure improvements, which varied depending on the service. The characteristics of the NEC reveal a potential for a successful introduction of HSR, but although Amtrak's Vision for HSR in the NEC is realistic (in terms of productivity), it is risky and perhaps the time scale is not ambitious enough. We recommend revising the current projections, incorporate additional planning approaches, accelerate key stages of the Vision and include the FAA in the planning process.
by Andrés Felipe Archila Téllez.
S.M.in Transportation
Faiz, Rizwan Bin. "An empirical rail track degradation model based on predictive analysis of rail profile and track geometry". Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/6455.
Pełny tekst źródłaBussieck, Michael. "Optimal lines in public rail transport". [S.l. : s.n.], 1998. http://deposit.ddb.de/cgi-bin/dokserv?idn=955665965.
Pełny tekst źródłaIleri, Yetkin. "Dray Optimization in Truck/Rail Networks". Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/13968.
Pełny tekst źródłaArmstrong, John. "Rail journey recovery following an incident". Thesis, University of Southampton, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417984.
Pełny tekst źródłaHaberland, Heiner. "Empfindlichkeitsanalyse an einem Common-Rail-Einspritzsystem /". Düsseldorf : VDI-Verl, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=015964521&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Pełny tekst źródłaZhu, Yi. "Adhesion in the wheel-rail contact". Doctoral thesis, KTH, Tribologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133342.
Pełny tekst źródłaQC 20131031
Hesse, Daniel. "Rail inspection using ultrasonic surface waves". Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444161.
Pełny tekst źródłaMekonnen, Demsachew. "Addis Light Rail Transit - Travel Advisor". Thesis, Mittuniversitetet, Avdelningen för informations- och kommunikationssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-25707.
Pełny tekst źródłaPerez-Unzueta, Alberto Javier. "Wear resistance of pearlitic rail steels". Thesis, University of Leicester, 1992. http://hdl.handle.net/2381/34812.
Pełny tekst źródłaMorris, Christopher Robert. "Data integration in the rail domain". Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8204/.
Pełny tekst źródłaKashima, Takashi 1971. "Reliability-based optimization of rail inspection". Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29388.
Pełny tekst źródłaIncludes bibliographical references (p. 123-126).
This thesis proposes a quantitative method to optimize inspection/repair intervention in rail defect management. Rail defect management is important for track maintenance, since rails are the most significant and basic component of the track systems. Rail inspection is a fundamental intervention to prevent rail failure. Railroads have evolved the rail inspection interval based on their empirical judgement and on field data. A crack size is predicted by linear elastic fracture mechanics (LEFM). The proposed method identifies the time-varying rail reliability due to deterioration, using data obtained from LEFM and from first-order reliability methods (FORM), which consider the uncertainty regarding the model. Since FORM is an approximation method, Monte Carlo simulation confirms the results. To represent practical situations regarding rail defect management, an event tree (ET) analysis is performed. The ET is modeled to all events and actions with respect to inspection/repair intervention. The ET analysis evaluates the expected reliability of a rail after inspections and possible remedial actions. Based on these results, a life-cycle cost (LCC) model is formulated, taking into consideration the time value of money. To this end, applications of the model to optimization of inspection intervals and to investigation of the effect of nondestructive testing and remedial actions on the LCC and the interval are analyzed.
(cont.) As a result, it is possible to extend the present inspection interval. Additionally, the effect of detectability of nondestructive testing on the LCC is more significant than that of accuracy of nondestructive testing, and a proactive maintenance policy may reduce both the expected total cost and the number of inspections.
by Takashi Kashima.
S.M.
Hyde, Paul. "Numerical techniques for optimising rail grinding". Thesis, University of Newcastle upon Tyne, 2012. http://hdl.handle.net/10443/1468.
Pełny tekst źródłaHolland, Chase Carlton. "Computational Methods for Estimating Rail Life". Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/41436.
Pełny tekst źródłaMaster of Science
Qazizadeh, Alireza. "On Active Suspension in Rail Vehicles". Doctoral thesis, KTH, Spårfordon, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208184.
Pełny tekst źródłaQC 20170602