• Proceedings of the Korean Society For Composite Materials Conference
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• 2000.11a
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• pp.257-260
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• 2000

The composite composed of glass fabric and BMI resin was fabricated using resin transfer molding(RTM) process. it will be used as a supporting plate of transformer coil for high speed train. To develop a RTM process, permeability of preform was measured and resin properties like a viscosity and gellation time were checked. A resin pre-heating system and a mold system were also designed and developed. Using a vacuum-assisted RTM process, the composite supporting plate was successfully fabricated.

• Proceedings of the KSR Conference
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• 2003.05a
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• pp.533-541
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• 2003

This paper shows the results of train system engineering technology and exterior and interior design of a prototype test train(HSR 350X) which was developed in R&D project titled 'Development of High Speed Railway Technology'. The prototype test train, which has two power cars, two motorized trailers and three trailers, is now being tested on high speed line.

• Proceedings of the KSR Conference
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• 2000.05a
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• pp.188-194
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• 2000

This study is about fault detection and fault area detection of LV circuit in Cab Cubicle system which have control of train to keep safety in High Speed Train. LV circuit is operated with diagnosis system like safety system. In this paper, we suggest a design and an implementation method to detect fault or to detect fault area automatically about LV circuit. The implemented system is tested successfully after implementation of some function. We expect reduction to diagnosis area or repair time by fault area module

• Proceedings of the KSR Conference
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• 2002.05a
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• pp.492-497
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• 2002

This study presents the core contents and superiority of localized Point-Machine which Alstom transferred its technology to Samsung SDS for High Speed Rail, developed based on existing MJ8l Point-Machine that is used in France and other countries. The scope of study includes introducing performance improvement of Localized MJ8l and conducting comparative analysis between Localized MJ8l and french products as well as NS type Point-Machine that has been deployed in the existing rail link. Moreover, the general architecture, features and test run results of Localized MJ8l are described.

• Proceedings of the KSR Conference
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• 2002.10a
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• pp.220-224
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• 2002

As the train run through the tunnels, especially at high speed, pressure shock developed by the running train gives the influence on the pressure fluctuation inside the tunnel and consequently, inside the car. This pressure changes and pressure gradient is closely related with the tunnel section, train speed, air tightness of the train, length of the tunnel, etc. This study includes the analysis of the pressure behavior at the varied train speed and tunnel length. The results show that train speed affects the pressure gradient inside the car almost linearly, and that there exist the critical tunnel lengths that gives the maximum value of pressure change and pressure gradient, respectively.

• Proceedings of the KSR Conference
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• 2002.10a
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• pp.509-515
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• 2002

Recently, the microprocessor with network function based control system instead of conventional microprocessor is widely used for industrial applications, and also these technologies are widely adopted for train control and monitoring in modem rapid transit system. The purpose of this paper is to propose a criteria for data transmission, which was designed and realized through Korea High Speed Train. Noise, distortion and attenuation are always present in data transmission system and strictly limit performance. This paper describes a method to calculate the propagation constant, attenuation constant, phase velocity and length of stub.

• Proceedings of the KSR Conference
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• 1999.11a
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• pp.226-233
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• 1999

The crash behaviour analysis of KHST is studied. KHST is modeled in 3D using the multibody dynamic analysis program DADS. The forward and side crash behaviour is predicted by tile dynamic analysis model and compared with those of another dynamic model. This study shot's that it is possible to predict tile crash behaviour of the trains in three dimension.

• Proceedings of the KSR Conference
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• 1999.11a
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• pp.376-384
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• 1999

In this paper, we introduce the on-line test plan of high speed rail development, which will be carried out at the test section of Seoul-Pusan high speed line from May to October, 2002. The test items are decided focused on the verification of the perofrmace and acquirement of the technical data of the high speed rail system development. The running time and distance of the train are calculated for several limited maximum speed cases. The detailed test scenario shall be developed according to the process of development and design of the system.

• Proceedings of the KSR Conference
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• 1999.11a
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• pp.121-129
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• 1999

This paper will describe the design of database for system engineering of High Speed Railway Systems, focusing on tile ability to capture a full thread of traceability, from tile inception of a system requirement, to the test results that validate that the designed system meets criteria defined by the requirement. The database includes data models for requirement, function, component, work, work process, resource, etc.. These data models are utilized for tile efficient management of data related system design, development work, and validation.

• Proceedings of the KSR Conference
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• 2003.10c
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• pp.8-14
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• 2003

곡선부가 많은 국내 기존선의 속도향상을 위한 틸팅차량의 개발은 기존선의 전철화에 따른 고속화를 위해 그 필요성이 부각되고 있다. 일반 고속차량과 다른 주행 메카니즘을 가지고 있는 틸팅차량의 주요 기술을 확보하기 위한 틸팅대차와 틸팅시스템의 개발과 연구는 한국철도의 기술력 향상에 큰 역할을 할 것이다. 180km/h급 한국형 틸팅차량의 틸팅 메카니즘 기구동역학 해석을 통하여 틸팅 대차를 형성하는 주요 파라메터들의 변화에 따른 틸팅 메카니즘의 특성과 영향력을 검토한다. 이를 통하여 최적의 틸팅운동을 수행할 수 있는 주요 파라메터의 값을 제시함으로서 틸팅차량이 요구하는 최적의 틸팅 메카니즘을 구현하고자 한다. 이 연구를 통해서 얻어지는 결과들은 팅팅 대차용 엑츄에이터의 성능 설계와 해석의 기반 자료로 사용되어진다.