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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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International Journal of Railway
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Journal DOI :
Korean Society for Railway
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Volume & Issues
Volume 5, Issue 4 - Dec 2012
Volume 5, Issue 3 - Sep 2012
Volume 5, Issue 2 - May 2012
Volume 5, Issue 1 - Mar 2012
Selecting the target year
Future of Railways - in Open Systems?
Macheret, Dmitry A. ;
International Journal of Railway, volume 5, issue 4, 2012, Pages 135~138
DOI : 10.7782/IJR.2012.5.4.135
The article suggests criteria of dividing transport systems into systems of limited and open access. Possibilities of implementing principles of the open access in conjunction with the adaptive control at the railway transport have been analyzed. The author makes a grounded conclusion that the development of transport systems based on the open access and adaptive control can play a positive role in overcoming the global instability of the economy and form prerequisites of its stable grows.
Estimation of Freight Trip Generation Rates based on Commodity Flow Survey in Korea
Park, Minchoul ; Sung, Hongmo ; Chung, Sungbong ;
International Journal of Railway, volume 5, issue 4, 2012, Pages 139~143
DOI : 10.7782/IJR.2012.5.4.139
In Korea, almost 700 industrial parks are under operation. Generally, industrial parks consist of national industrial parks and local industrial parks which are managed by a central government and by local governments respectively. The developing countries such as Korea, China and Vietnam etc. have constructed many industrial parks, which result in the change of land use pattern and also affect future trip demands. Therefore, in estimating traffic demands, it is very important to consider the industrial park development. This study aims to improve the methodology in estimating a freight trip generation rate with the data based on a nationwide commodity freight survey. The result showed that it is desirable to apply freight trip generation rate by the industry sector in estimating freight trip generations and using the production area of firm as an indicator. Specially, the reliability of the rates through a survey could be made sure because a sample rate based on firms in industrial parks was over 25% and the response rate was over 67%. The sample rate and response rate are very superior as compared to surveys conducted in many other countries. Because industrial parks have significant effects on forecasting transportation demand in pre-feasibility studies of transport and logistics projects, it is expected that the accuracy of freight trip demands would be improved through the results of this study.
Development of an Automatic System for Feasibility Studies on Transport Investment
Eom, Jin Ki ; Lee, Kwang Sub ; Lee, Jun ; Moon, Dae Seop ;
International Journal of Railway, volume 5, issue 4, 2012, Pages 144~147
DOI : 10.7782/IJR.2012.5.4.144
New transport technologies have been rapidly developed and various transport systems are ready to introduce. However, there no exists effective decision making tools for pre-feasibility studies on transport systems. The pre-feasibility studies should provide reliable solutions about whether a certain transport system is feasible or not by cost-benefit analysis and effectiveness test of enhancing regional economy. This study introduces the smart transport investment/information system (SMARTIS) for supporting decision making with ease, fast and reliable methods. The SMARTIS incorporates travel demand estimates into the process of feasibility studies with automatic data processing methods to give reliable solutions quickly. The SMARTIS is expected to be informative for transit agencies, planners, and operators.
Learning an Application of Superconductivity in Modern Mass Transportation
Ping, Jin ; Hui, Liu ; Li, Wan ;
International Journal of Railway, volume 5, issue 4, 2012, Pages 148~151
DOI : 10.7782/IJR.2012.5.4.148
Applications of superconducting technology in transportation is more straightforward than others, such as magnetic levitation (maglev) trains. A maglev train is of high speed & low power-consumption, environmental friendly and safe, accompanied by some drawbacks. This article will introduce the application of superconducting technology in the urban mass transport system, and the bottleneck of this application.
Characteristics of Graphite Particle Size comprised in Metallic Friction Material
Kim, Young Gyu ; Lee, Jong Seong ; Kim, Sang Ho ; Lee, Hi Sung ;
International Journal of Railway, volume 5, issue 4, 2012, Pages 152~155
DOI : 10.7782/IJR.2012.5.4.152
The essential element of brake device for railway vehicle is in demand for higher performance along side the trend of railway vehicle size and speed. Essential element of brake device for high speed train is composed of metallic friction material and brake disc. Thus, brake distance, duration and brake stability shall be determined due to friction materials and friction characteristics. Also friction characteristics are influenced by metallic friction material's properties of matter, manufacturing process and component parts. Various materials and configurations of metallic friction materials are currently being implemented to railway vehicles, For this reason study of friction characteristics in accordance with materials is necessary, but study of these important elements are not actively being accomplished. Therefore, in this study, wished to study the graphite's friction characteristic comprised in friction material in accordance with particle size and amount of volume through lab-scale test.
A Study on the Running Safety of F26 Turnout and Vehicle Model
Kim, Sung Jong ; Eom, Beom-Gyu ; Lee, Hi Sung ;
International Journal of Railway, volume 5, issue 4, 2012, Pages 156~162
DOI : 10.7782/IJR.2012.5.4.156
When a vehicle passes through turnout, it is required to minimize the changes of lateral force for running safety of vehicle. Therefore, it is necessary to analyze interaction between the vehicle and the turnout in order to estimate the lateral force and the derailment coefficient on the turnout. In this paper, analysis model of the vehicle and turnout are established and analysis is carried out when the vehicle passes through turnout in order to improve running safety of the vehicle on turnout. To verify the vehicle and turnout analysis model, the contact points between wheel and rail and the influence of changing cradle and tongue rail are also discussed.
Influence of Slab Length on behavior of Floating Slab Track by Rail-slab-isolator Longitudinal Interaction
Nguyen, Huan Ha ; Jang, Seung Yup ; Chung, Wonseok ;
International Journal of Railway, volume 5, issue 4, 2012, Pages 163~166
DOI : 10.7782/IJR.2012.5.4.163
Many different types of floating slab track have been developed and installed around the world to reduce vibrations and noise originating in the surrounding environment. The main objective of this study is to examine the influence of slab length on behavior of floating slab track based on rail-slab-isolator interaction. The floating slab track is modeled by the connection between rail, slab, isolator, and slab mat in the transition zone. All elements were assembled in a simplified two-dimensional (2D) finite element model (FEM). The maximum length of FST is then investigated based on the maximum additional rail stress criterion as described in UIC 774-3R since no fully accepted design criteria for the slab length in FST systems currently exist.
Design of Wireless Power Transfer System for Railway Application
Hwang, Kiwon ; Kim, Seonghwan ; Kim, Seongkyu ; Chun, Yangbae ; Ahn, Seungyoung ;
International Journal of Railway, volume 5, issue 4, 2012, Pages 167~174
DOI : 10.7782/IJR.2012.5.4.167
As wireless power transfer (WPT) technologies emerge in a wide range of applications including public transportation, many expect that applying the technology to the current railway systems will bring positive effects to current railway systems. In this paper, we introduce design methodology of a WPT system for railway application. Fundamental principles of magnetic fields and a WPT circuit are first analyzed, and advantages and efficiency of a possible train system are discussed. It then examines other significant factors such as performance requirements and EMC criteria to design a wireless train system.
Development of the Assessment Indicators for Railway Safety
Song, Bo-Young ; Moon, Dae-Seop ; Lee, Hi Sung ;
International Journal of Railway, volume 5, issue 4, 2012, Pages 175~181
DOI : 10.7782/IJR.2012.5.4.175
This study proposes a model for railway safety assessment with which the safety of whole railway system can be evaluated. The purpose of the assessment model is to generate safety indicators which quantitatively represent the degree of railway safety. Safety indicators were proposed as three indicators according to their functions; accident indicators, safety management indicators, and safety culture indicators. This paper describes the first result on the safety target which will be a key starting point toward the development of safety assessment model. It is recommended that the safety target to be composed of several sub-targets are apportioned to constituent components. It is concluded that the classification of safety target has influence on deciding components or attributes that constitute each sub-indicators; accident indicators, safety management indicators, and safety culture indicators. Based on this study, a railway safety assessment model will be developed in the following study.