• Magazine of the Korea Institute for Structural Maintenance and Inspection
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• v.16 no.1
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• pp.63-75
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• 2012

• Magazine of the Korea Institute for Structural Maintenance and Inspection
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• v.17 no.2
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• pp.45-49
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• 2013

• Magazine of the Korea Institute for Structural Maintenance and Inspection
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• v.20 no.2
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• pp.34-38
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• 2016

• Proceedings of the KSR Conference
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• 2011.10a
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• pp.1478-1485
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• 2011

Subway stations have a characteristic that the facilities in the ceiling should be checked, replaced or expanded frequently. The frequent opening and closing of ceiling panels result in the damage of panels which makes them easily disengaged. In order to resolve this issue, which is giving difficulty in the maintenance of the stations, this study suggest a sliding ceiling panel structure which can be opened and closed with sliding mechanism, instead of current fixed type ceiling panels. The sliding ceiling panel will prevent the damage of ceiling panels due to frequent disengagement and engagement. It will increase the durability of ceiling panel and extend the cycle of panel replacement. Accordingly, the maintenance cost will be also reduced.

• Journal of the Korean Society for Railway
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• v.11 no.1
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• pp.107-113
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• 2008

As it recently appears that LCC (Life Cycle Cost) analysis may be considered as an essential method for economic evaluation of infrastructures. Many researches have been made to assess LCC of each facility based on reasonable methods. However, expected maintenance repair cost must be reasonably estimated to enhance the reliability of LCC analysis through systematic and rational methods. This study is intended to propose a rational approach to reliability-based LCC analysis of high-speed railway steel bridges considering lifetime corrosion and fatigue damage. However in Korea, since high speed railway steel bridges are only recently constructed, no direct statistical data are available for the account of the maintenance cost and thus their maintenance characteristics are not clear yet. In this paper, for the assessment of expected maintenance/repair cost, the fatigue system reliability analysis incorporating the corrosion effect is proposed by considering the corrosion and fatigue damage using measured data of high speed railway steel bridges. A model proposed by Rahgozar, of at for fatigue notch factor considering the corrosion effect is used in order to incorporate the corrosion effect into the fatigue strength reduction and S-N curve. Finally, the effectiveness of LCC model proposed for high-speed railway steel bridges is demonstrated by a numerical example.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.2
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• pp.219-230
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• 2014

There are many economical and industrial as well as social demands enabling smart management of railway vehicle including parts management by introducing RFID system in railway vehicle. In this paper, overseas researches and developments which use cases of RFID were investigated and analyzed. In this process, cases of various industries adopting RFID technology as well as cases of railway part were investigated. RFID system is used mainly for railway vehicle position detection and identification of vehicles in the field of railway. Also there are cases of application on traceability management of railway vehicle parts. The system in which RFID technology can be applied to railway parts management and traceability management is necessary for smart management of domestic railway vehicle.

• Proceedings of the KIPE Conference
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• 2018.11a
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• pp.127-128
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• 2018

최근 전 세계적으로 온실가스에 의한 환경 문제가 심각해짐에 따라 수송 분야에서 친환경 에너지를 사용하는 요구가 확대되고 있다. 철도분야에서도 이산화탄소 배출 통제와 더불어 추진에너지로서의 배터리의 사용을 검토하고 있고 관련된 연구가 증가하고 있다. 전기자동차에 비해 철도차량의 배터리는 대용량이 필요하며 철도운영 특성상 초기 도입 비용은 물론 유지관리 비용도 발생된다는 한계점이 있다. 본 연구에서는 배터리를 적용한 철도차량의 경제성을 높이기 위해 철도차량용 폐배터리의 재활용 방안에 대해서 연구해 보겠다. 이를 위해 현재 전기자동차분야의 폐배터리 재활용 동향에 대해 알아보고 철도차량용 배터리의 재활용 가능성을 검토해보겠다.

• Magazine of the Korea Concrete Institute
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• v.27 no.1
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• pp.27-30
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• 2015

• Proceedings of the Safety Management and Science Conference
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• 2010.11a
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• pp.651-668
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• 2010

철도 시스템은 차량, 전력, 신호, 선로구축물시스템이 유기적으로 결합된 복합시스템으로 사고 발생 시 원인규명이 어렵고 인명에 치명적인 결과를 초래하게 되며 사소한 고장이라도 열차지연에 미치는 파급효과는 지대하여 시스템의 신뢰성확보가 매우 중요하다[26]. 실제로 세계 각국의 철도산업은 시스템의 신뢰성 향상을 위해 신뢰성 기법에 기반을 둔 다양한 이론을 통해 신뢰성 향상과 안전성 향상에 최선을 다하고 있다. 본 연구에서는 철도 신뢰성관리와 관련된 국내 연구동향과 철도 운영기관 및 기업에서 적용하고 있는 신뢰성 적용 현황을 분석한다. 그리고 국외 연구 동향과 주요 적용 현황을 정리한다. 또한 철도 신뢰성과 관련된 국내외 규격을 조사하고 이들 규격의 내용을 분석한 후 국내 적용방향을 제시한다.

• Proceedings of the KSR Conference
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• 2009.05a
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• pp.619-627
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• 2009

It is very important that reduce the maintenance cost and extend life time of the urban transit EMU through effective maintenance method research. The maintenance cost of the urban transit EMU shares 70%$\sim$80% of it's life cycle cost. It means that the maintenance cost is bigger than the introduction cost of the urban transit EMU. In this study, we were survey and analysis for the reliability centered maintenance of internal and external many industry parts. Finally, we suggested the reliability/availability management System of the Urban Transit EMU' Maintenance.