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Rozprawy doktorskie na temat „Rajil”

Autor: Grafiati
Data publikacji: 3 czerwca 2025
Data aktualizacji: 31 lipca 2025

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1

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.

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SCA transports timber via rail from railway terminals in western Sweden to saw and/or pulp mills located on the east coast. Sometimes timber wagons are lost due to damages inflicted when loading the wagon. Wagons can also be decommissioned for maintenance conducted by the Swedish Transport Administration. Both situations are unpredictable and causes many types of problems. If the wagons could be automatically traced these problems could be predicted and pre-emptive actions could be taken. All wagons used by SCA are equipped with RFID tags and RFID readers are installed at the railway terminals
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2

Soenneker, 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.

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Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.<br>Includes bibliographical references (leaves 66-67).<br>by Richard Soenneker.<br>M.Eng.and S.B.
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3

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.

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Master’s thesis deals with design of rail-to-rail second generation current conveyor in CMOS technology. Describes principles of function of different generations of current conveyors, as well as the basic principle of design of second generation current conveyor based on operational amplifier. Addresses circuit topology of input rail-to-rail stage and class AB output stage. The objective of this thesis is to design, characterize performance and create layout of second generation current conveyor with input common mode voltage rail-to-rail capability in ONSemi I3T25 technology.
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4

Orvnäs, 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.

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Rail wear can result in extensive costs for the track owner if it is not predicted and preventedin an efficient way. To limit these costs, one measure is to predict rail wear through wear simulations. The purpose with this work is to perform simulations of successive rail wear on the Swedish light rail line Tvärbanan in Stockholm, by means of the track-vehicle dynamics software GENSYS in combination with a wear calculation program developed in MATLAB. The simulation procedure is based on a methodology with a simulation set design, where the simulations to be performed are selected through a pa
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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.

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Rail infrastructure is a large and costly investment, and has a long life. To realize the benefits from this investment, effective maintenance is required. Railways are one of the prime modes of transportation in many countries and as they are closely associated with passenger and cargo transportation, they own high risk in terms of potential loss of human life and damage/destruction of assets. New technologies and stringent safety standards are constantly being introduced, but accidents still occur. There will always be some risk associated with derailments and collisions, but it can be reduc
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6

Pang, Tao, and 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.

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To investigate the wheel/rail contact impact forces at insulated rail joints (IRJs), a three-dimensional finite element model and strain gauged experiments are employed and reported in this thesis. The 3D wheel/rail contact-impact FE model adopts a two-stage analysis strategy in which the wheel-IRJ railhead contact is first established in the static analysis and the results transferred to dynamic analysis for impact simulations. The explicit FE method was employed in the dynamic analysis. The Lagrange Multiplier method and the Penalty method for contact constraint enforcement were adopted for
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7

Murty, Anjali. "Highly linear, rail-to-rail ICMR, low voltage CMOS operational amplifer." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/14884.

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Morris, 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.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.<br>Includes bibliographical references.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>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 h
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9

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.

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10

Babenko, Pavel. "VISUAL INSPECTION OF RAILROAD TRACKS." Doctoral diss., University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4013.

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In this dissertation, we have developed computer vision methods for measurement of rail gauge, and reliable identification and localization of structural defects in railroad tracks. The rail gauge is the distance between the innermost sides of the two parallel steel rails. We have developed two methods for evaluation of rail gauge. These methods were designed for different hardware setups: the first method works with two pairs of unaligned video cameras while the second method works with depth maps generated by paired laser range scanners. We have also developed a method for detection of rail
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11

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.

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In recent years there has been continuous increase of axle loads, tonnage, train speed, and train length which has increased both the productivity in the rail sector and the risk of rail breaks and derailments. Rail operating risks have been increasing due to the increased number of axle passes, sharper curves, wear-out of rails and wheels, inadequate rail-wheel grinding and poor lubrication and maintenance. Rolling contact fatigue (RCF) and wear are significant problems for railway companies. In 2000, the Hatfield accident in the UK killed 4 people, injured 34 people and led to the cost of £
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12

Reddy, 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/.

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In recent years there has been continuous increase of axle loads, tonnage, train speed, and train length which has increased both the productivity in the rail sector and the risk of rail breaks and derailments. Rail operating risks have been increasing due to the increased number of axle passes, sharper curves, wear-out of rails and wheels, inadequate rail-wheel grinding and poor lubrication and maintenance. Rolling contact fatigue (RCF) and wear are significant problems for railway companies. In 2000, the Hatfield accident in the UK killed 4 people, injured 34 people and led to the cost of £
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13

Telliskivi, Tanel. "Wheel-rail Interaction Analysis." Doctoral thesis, KTH, Machine Design, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3532.

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<p>A 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 Archard’s 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.</p><p>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 eith
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14

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.

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The worldwide preferred method for rail joining is welding; flash butt welding (FBW) and thermite welding (TW) are the two main welding methods used for joining continuous welded rail (CWR) tracks. However, the welds still represent a discontinuity in the track structure due to variations in microstructure, mechanical properties and residual stress levels with respect to the parent rail. These variations can play significant roles in increasing the risk of weld failure under service conditions. In order to better understand how FBW parameters affect these variations, the two main parameters; n
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15

Kawasaki, Junji 1968. "Estimations of rail irregularities." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8543.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2001.<br>Includes bibliographical references (leaves 74-76).<br>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
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16

Ray, Arunim. "Niobium microalloyed rail steels." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/265387.

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Rail steels rely primarily on possessing adequate wear and rolling contact fatigue resistance. These properties, together with the toughness, can in principle be optimized by implementing thermomechanical processing assisted by controlled niobium additions. The purpose of the current work is to develop a Nb-microalloying strategy in the context of high-carbon pearlitic and cementite-free bainitic steels. The conventional methods do not leave the critical regions of a rail section in a suitably processed state. An attempt has been made for the first time, to create a pancaked austenite grain st
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17

Vieira, 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.

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This dissertation is aimed at the development of a current mode instrumentation amplifier (CMIA) with a high common mode input range. This characteristic is obtained due to the rail-to-rail operational amplifiers (opamps). These opamps are built with rail-to-rail differential amplifiers as input stages, and with cascode-based output stages, which are able to copy its current by adding identical branches and connecting their gates without the voltage degradation as the known CMIA topologies. The main contribution of this work is the development of a rail-to-rail current mode instrumentation amp
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18

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.

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19

Patching, Ruth Olivia. "Australia's India : from Raj to Rajiv /." Title page, table of contents and introduction only, 2004. http://web4.library.adelaide.edu.au/theses/09AR/09arp294.pdf.

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20

Al-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.

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An important issue for transport policy is whether more investment should be devoted to rail schemes and less to road schemes and vice versa. This raises the problem of comparing the returns from investments in the two modes currently assessed on a different basis - road schemes are appraised on a Cost Benefit Analysis (CBA) basis, whereas rail schemes are assessed on a Financial Analysis (FA). This study is a step in the direction of identifying the difference between the two techniques (CBA and FA) of appraisal in general and in case of rail investment in particular, and examining the implic
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21

Al-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.

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An important issue for transport policy is whether more investment should be devoted to rail schemes and less to road schemes and vice versa. This raises the problem of comparing the returns from investments in the two modes currently assessed on a different basis - road schemes are appraised on a Cost Benefit Analysis (CBA) basis, whereas rail schemes are assessed on a Financial Analysis (FA). This study is a step in the direction of identifying the difference between the two techniques (CBA and FA) of appraisal in general and in case of rail investment in particular, and examining the implic
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22

Vellturo, 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.

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23

Lacerda, 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.

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Orientador: Carlos Alberto dos Reis Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-01T07:37:16Z (GMT). No. of bitstreams: 1 Lacerda_Fabiode_M.pdf: 2622408 bytes, checksum: 2f4c944421ef4f76580a3a2d600b57cf (MD5) Previous issue date: 2001<br>Mestrado
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Lacerda, Fábio de, and 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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Submitted by Marcele Costal de Castro (costalcastro@gmail.com) on 2017-09-11T17:56:14Z No. of bitstreams: 1 FABIO DE LACERDA M.pdf: 2612765 bytes, checksum: 35a458410db6cc1af2cfe26670f1483b (MD5)<br>Made available in DSpace on 2017-09-11T17:56:15Z (GMT). No. of bitstreams: 1 FABIO DE LACERDA M.pdf: 2612765 bytes, checksum: 35a458410db6cc1af2cfe26670f1483b (MD5) Previous issue date: 2001-12<br>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
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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.

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Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, September 2006.<br>Thesis Advisor(s): Kwon Young. "September 2006." Includes bibliographical references (p. 77-78). Also available in print.
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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.

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This thesis presents a novel approach for locating rail infrastructure to a precision required for effective asset management. A new or improved survey system was required which was rapidly mobilised and non-disruptive to normal rail operations. To aid the designing of a new system research was carried out into contemporary surveying techniques, which were then assessed against key design criteria.
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Heunis, Johannes Jacobus. "Material models for rail pads." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6643.

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Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2011.<br>ENGLISH 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 com
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Baranger, Philippe. "Le rail aux etats-unis." Toulouse 2, 1991. http://www.theses.fr/1991TOU20069.

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Le chemin de fer s'est developpe a la meme epoque que la nation americaine. Avant la fin du dix-neuvieme siecle. Le reseau s'etait etendu a tout l'espace americain. Le nouveau systeme joua un role preeminent dans l'ascension des etats-unis sur le plan international les puissantes compagnies, qui etaient toutes des entreprises privees, servirent de laboratoires dans l'elaboration de nouvelles relations sociales et professionnelles, ainsi que dans la creation d'entreprises. Entre les deux guerres, le rail du ceder une part de son quasi-monopole du transfert interieur, au profit de deux nouveaux
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ASTA, VERONICA. "Port Rail Shunting Optimization Problems." Doctoral thesis, Università degli studi di Genova, 2021. http://hdl.handle.net/11567/1050214.

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The work focuses on a particular section of the intermodal chain of freight transportation, which is the link between rail and sea transportation modes and happens in the maritime port area. Among this field, the study deals with the management of rail operations, called here rail shunting operations, that have to be performed in the port area. Two optimization problems arises in this context. The first concerns the scheduling of the rail shunting operations, here called Port Rail Shunting Scheduling Problem (PRSSP). The second deals with the re-scheduling of the same operations in case of u
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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.

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Lau, Kam-lung Darren, and 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.

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Ma, 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.

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Beal, 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.

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Jenkins, Kyle RL. "The Effect of Heavy and Light Rail Transportation Systems on Car Ownership." Scholarship @ Claremont, 2013. http://scholarship.claremont.edu/cmc_theses/600.

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Rates of car ownership in the United States exceed that of all other large nations in the world. This high rate contributes to the unexpressed demand for road space that renders highway expansion useless as a strategy for decreasing traffic congestion. It also necessitates the provision of on-site parking in residential buildings, decreasing the affordability of housing in urban areas. Furthermore, the curb-side parking needed to make room for the high number of cars in the country takes away space that could be used for bike lanes, transit lanes, or widened sidewalks. Therefore, the United St
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Liu, 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.

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Block-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.

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Thesis (Ph. D. in Transportation)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 265-284).<br>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 cons
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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.

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Thesis (S.M. in Transportation)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>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
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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.

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It is generally observed that the condition of rail tracks degrades rapidly over time until and unless effective maintenance is carried out. In the rail industry, rail maintenance actions are usually reactive, which means that maintenance is carried out after a defect has been identified. Unfortunately, this approach can lead to general safety concerns and may result in costly maintenance. Predictive maintenance, which aims to predict the future behaviour of track degradation based on the analysis of already recorded data, can be used to identify defects in advance, thus providing a solution f
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Bussieck, Michael. "Optimal lines in public rail transport." [S.l. : s.n.], 1998. http://deposit.ddb.de/cgi-bin/dokserv?idn=955665965.

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Ileri, Yetkin. "Dray Optimization in Truck/Rail Networks." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/13968.

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Daily drayage operations involve moving loaded or empty equipment between customer locations and rail ramps. Drayage orders are generally pickup and delivery requests with time windows. The repositioning of empty equipment may also be required in order to facilitate loaded movements. The drayage orders are satisfied by a heterogeneous fleet of drivers. Driver routes must satisfy various operational constraints. In the first part of the dissertation, our goal is to minimize the cost of daily drayage operations in a region on a given day. We present an optimization methodology for finding cos
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Armstrong, John. "Rail journey recovery following an incident." Thesis, University of Southampton, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417984.

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Haberland, 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.

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Zhu, Yi. "Adhesion in the wheel-rail contact." Doctoral thesis, KTH, Tribologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133342.

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To attract more customers and compete with other modes of transportation, railway transport needs to ensure safety, punctuality, high comfort, and low cost; wheel–rail adhesion, i.e., the transmitted tangential force in the longitudinal direction during driving and braking, plays an important role in all these aspects. Adhesion needs to be kept at a certain level for railway operation and maintenance. However, wheel−rail contact is an open system contact. Different contaminants can present between the wheel and rail surfaces, forming a third-body layer that affects the adhesion. Prediction of
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Hesse, Daniel. "Rail inspection using ultrasonic surface waves." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444161.

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Mekonnen, 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.

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In the current wave of economic instability, the world is witnessing significanteconomic progress in the sub-Saharan Africa. In this particular part of the worldamong the best performing developing economies, Ethiopia’s progress is con-sidered as an example for achievements in the region in last decade. The gov-ernment of Ethiopia believes in building huge infrastructures in the whole coun-try and especially in the economically vital geographies like the capital AddisAbaba. The project I have proposed aims to contribute to the smooth function-ing of the Addis Light Rail Transit after its launc
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Perez-Unzueta, Alberto Javier. "Wear resistance of pearlitic rail steels." Thesis, University of Leicester, 1992. http://hdl.handle.net/2381/34812.

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Modern railway transportation has imposed severe work conditions on the track. Wear of rails has become an important and costly phenomenon. Recent developments in the manufacture of rail steels have refined the interlamellar spacing to produce harder and more wear resistant pearlitic steels. Despite better nominal properties shown by bainitic and martensitic steels, pearlitic steels have shown lower wear rates. The aim of this study is to explain the mechanisms for the wear performance by observing how the lamellar pearlitic microstructure adapts to the wear loading. Four pearlitic rail steels
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Morris, Christopher Robert. "Data integration in the rail domain." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8204/.

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The exchange of information is crucial to the operation of railways; starting with the distribution of timetables, information must constantly be exchanged in any railway network. The slow evolution of the information environment within the rail industry has resulted in the existence of a diverse range of systems, only able to exchange information essential to railway operations. Were the cost of data integration reduced, then further cost reductions and improvements to customer service would follow as barriers to the adoption of other technologies are removed. The need for data integration ha
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Kashima, Takashi 1971. "Reliability-based optimization of rail inspection." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29388.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2004.<br>Includes bibliographical references (p. 123-126).<br>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 si
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Hyde, Paul. "Numerical techniques for optimising rail grinding." Thesis, University of Newcastle upon Tyne, 2012. http://hdl.handle.net/10443/1468.

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Grinding of rails is a technique widely used within the railway industry to balance the degradation of the condition of the rail with the required performance of the rail. The principal focus of this research is the impact of wear and rolling contact fatigue (RCF) cracks on structural integrity of rails, and how rail grinding affects this relationship. A numerical model which predicts growth of RCF-initiated cracks in rails has been adapted to take into account periodic grinding of the surface of the rail. The suitability of some of the simplifying assumptions of the adapted model, referred to
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Holland, Chase Carlton. "Computational Methods for Estimating Rail Life." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/41436.

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In American rail operations, rails fail due to the combined effects of rail wear due to repetitive wheel contact and the growth of surface and sub-surface cracks and flaws. Rail maintenance includes frequent uncoupled wear and ultrasonic inspections that determine the amount of wear that the rail has undergone and the presence of cracks and flaws. A rail is removed from service when its wear reaches a pre-determined wear limit or a flaw is detected in its cross section. In rail research, the life of a rail is typically estimated using fracture mechanic or fatigue methods and an assumed flaw ge
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