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이철규,이덕희,정우성,Lee, Cheul-Kyu,Lee, Duck-Hee,Jung, Woo-Sung 한국방재학회 2004 한국방재학회논문집 Vol.4 No.2
The time to ignition, heat release rate characteristics, and carbon monoxide yield of fiber reinforced and sandwich phenol resin were investigated with cone calorimeter. The fire characteristics of unsaturated polyester, mostly being applied to the existing passenger train, and phenolic resin were compared. DSC & TGA was used to monitor the degree of thermal decomposition and weight loss for the phenolic resin. According to the cone calorimeter data, the time to ignition was shorter, heat release rate, and CO yield was higher as the external heat flux increased. Under the same heat flux, the time to ignition of sandwich type phenolic resin was shorter than that of laminated. The result of comparison between unsaturated polyester and phenolic resin was that phenolic resin was shown to have better fire resistance than unsaturated polyester. 철도차량의 내장재료로 사용되는 페놀수지의 laminate Panel과 sandwich panel의 화재특성을 콘칼로리미터를 이용하여 착화시간, 열방출율과 일산화탄소방출량을 비교, 조사하였다. 또한 기존 철도차량용 내장재료로 사용된 불포화 폴리에스터와 페놀수지와의 화재특성을 비교하였다. 페놀수지의 중량감소 및 열분해능을 DSC & TGA를 이용하여 측정하였다. 콘칼로미터 실험결과 착화시간, 열방출율 및 일산화탄소 생성량은 50kW 복사조건에서 더 높게 나타남을 알 수 있었으며, 동일한 복사열소건 하에서는 sandwich-페놀수지가 laminate-페놀수지보다 더 빨리 착화되었다. 기존 철도차량에 적용되었던 불포화 폴리에스터와 페놀수지와의 비교시험 결과 페놀수치의 화재성능이 발열량 및 일산화탄소 방출 모두에서 우수한 것으로 조사되었다.
FT-IR을 이용한 연소가스 정량화에서 농도별 수분스펙트라 확보 및 적용연구
이철규(Lee Cheul-Kyu),이덕희(Lee Duck-Hee),박지영(Park Ji-Young),정우성(Jung Woo-Sung),정종학(Jung Jong-Hak) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
The important factor is keeping the temperature condition in quantifying several toxic components in combustion gases. In case of not keeping the temperature as it was in combustion, the change of component and concentration of smoke gases was inevitable. To solve this problem, FT-IR spectroscopy with gas cell was applied. But, there is also a difficulty in quantitative analysis of specific toxic component because of water vapor. Thus, in this study, water vapor FT-IR spectra with different concentrations were obtained and applied them to quantitative analysis.
철도차량 전과정 단계별 온실가스 발생량 비교를 통한 저탄소 운영방안 연구
이철규(Lee-Cheul Kyu),김용기(Kim-Yong Ki) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
Advanced Railway countries are developing technologies of production and management for low-carbon and green growth of their railway industry to hold a dominant position under post-Tokyo protocol regime through integrated approach which uses environmental quantitative analysis of train life cycle by using LCA(Life Cycle Assessment). On the contrary, Korea railroad industry attempts to make an environmental improvement only for using regenerative energy and improvement in operating energy consumption through adapting reduction weight of material technology and etc. without systematic environmental analysis approaches such as comparing and analyzing energy consumption as well as GHG emission in each life cycle stages of train. Therefore, In this paper, low-carbon management and comprehensive environmental improvement for sustainable development of Korea railway industry through analyzing the result of life cycle analysis in abroad are suggested.
이철규(Lee Cheul-Kyu),정우성(Jung Woo-sung),이덕희(Lee Duck-Hee) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
Although insulation equipment is installed, it is inevitable to avoid the stray current because rail is the return way of the direct current that is power of electric motor car. In this paper, by the investigation of the present state of underground facilities, and looking into the reason of electric corrosion, and analysis of corrosion accident cases of inside and outside of the country, fundamental data, to reduce of stray current and to prevent electric corrosion, were accumulated to enhance the safety of railway operation service.
이철규(Lee Cheul-Kyu ),이덕희(Lee Duck-Hee),정우성(Jung Woo-Sung),신동철(Shin Dong-Cheul) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
It is social demands that we are now wanting to be more cozier and clean by the enhancement of the living standard recently. Antimicrobial is essential to the interior materials to prevent bacteria from spreading through passenger using the electric railway called environmentally friendly. In this paper, ion exchanged zeolite was added to the unsaturated polyester resin reinforced glass fiber. To investigate the animicrobial performance, Staphylococcus aureus and Escherichia coli was used according to the FC TM-20-2003 method.
도시철도차량 설계단계에서 운행전력 소비량 예측기법 연구
이철규(Lee Cheul-Kyu),김용기(Kim Yong-Ki),피라다(Pruitichaiwiboon-Phirada) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
It is predicted that various types of urban railway vehicles will be running according to the characteristics of line and operation. Although heavy railway vehicle had been running in and around Seoul from the initial stage, lighter railway vehicle is running due to the operation cost and profit of the operation Company. Moreover, recent global warming problem forces railway industry to develop lighter railway vehicle and higher energy efficiency but railway vehicle and designer is difficult to predict energy consumption of railway vehicle at developing stage. In this study, proper energy consumption prediction method is suggested with the statistics of current energy consumption of each operation company.
이철규(Lee Cheul-Kyu),전용삼(Jeon Yong-Sam),이재영(Lee Jae-Young),김용기(Kim Yong-Ki) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
The concern on sustainable development is increased to solve the global warming which is environmental issue over nations. Sustainable development is the concept of minimizing the consumption of resource and environment burden. In transportation, there are some trials of shifting to green transportation mode through low energy consumption and high efficiency. Korea Tilting Train eXpress (TTX) can run higher speed than existing train and save energy through light weight. In this study, Tilting bogie, the core equipment of tilting train, was compared with that of existing train.
이철규(Cheul-Kyu Lee),정우성(Woo-Sung Jung),이덕희(Duck-Hee Lee) 한국철도학회 2004 철도저널 Vol.7 No.1
Composite materials were used widely due to merit of light weight, low maintenance cost and easy installation. But it is the cause of enormous casualties to men and properties because of weak about the fire. Particularly, it is more serious in case of subway train installed composite materials. For this reason, experimental comparison has been done for measuring heat release rate(H.R.R) and smoke production rate(S.P.R) of interior panels of electric motor car using cone calorimeter. A high radiative heat flux of 50kW/㎡ was used to burn out all materials and to simulate the condition of fully developed fire case in the tests. It was observed that Heat Release Rate and Smoke Production Rate curves were dependent on the kinds of the interior materials. From the heat release rate curves, the sustained ignition time, peak heat release rate and total heat release rate were deduced. These data are useful in classifying the materials by calculating two parameters describing the possibility to flashover.
이철규(Lee Cheul-kyu),이덕희(Lee Duck Hee),정우성(Jung Woo Sung) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
The time to ignition, heat release rate characteristics and carbon monoxide yield of fiber reinforced and sandwich phenol resin were investigated with cone calorimeter. The fire characteristics of unsaturated polyester, mostly being applied to the existing passenger train, and phenolic resin were compared. Thermal gravimetric analysis(TGA) was used to monitor the degree of thermal decomposition for the phenolic resin. According to the cone calorimeter data, the time to ignition, heat release rate and CO yield was faster and higher as the external heat flux increase. Under the same heat flux, the time to ignition of sandwich type phenolic resin was shorter than that of fiber reinforced. The result of comparison between unsaturated polyester and phenolic resin was that phenolic resin was shown to have better fire resistance than that of unsaturated polyester.