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레이저 플래쉬 방법에 의한 SiC/C계 경사기능재료의 열물성 측정
목재균,유재석,Mok, Jae-Gyun,Yu, Jae-Seok 대한기계학회 1996 大韓機械學會論文集B Vol.20 No.5
Laser flash technique was applied to measure thermal properties of FGM made by a CVD method. System stability and reproducibility of this measuring system were proved and calibrated with glassy carbon used as reference material. Specimens was prepared by cutting FGM diagonally. Measurements were performed for a wide range of temperatures up to 1500K. Relative heat capacity of the FGM specimen was scattered with in $\pm$13% at room temperature and at high temperature above 1200K, and $\pm$3% at medium temperature range. On the other hand, thermal diffusivity data showed excellent reproducibility and stability through the whole temperature range. In conclusion, the multi-target radiometer can be applied to measure the thermal properties of non homogeneous materials like FGM.
한국형 고무차륜 경량전철시스템에 대한 요구사항 검증계획
목재균,이안호,한석윤,Mok, Jae-Gyun,Lee, An-Ho,Han, Seok-Yun 한국시스템엔지니어링협회 2003 시스템엔지니어링워크숍 Vol.1 No.-
This study is in a part of requirements validation plan for korean rubber-tired AGT system on test track. The AGT system is consisted subsystems as vehicle, signalling, communication, power distribution and infrastructure for rubber tire running on track. The subsystems will be installed and integrated on test track till next year for test and evaluation. This paper shows overview for test and evaluation in terms of system requirements and its validation classification, test track configuration, measuring system requirements and its configuration. The whole process of system integration and its validation will be controlled by means of KMS including documentation.
이호용(Ho Yong Lee),최기석(Ki Seok Choi),목재균(Jae Gyun mok),문경호(Gyeong Ho Moon),이준성(Jun Seong Lee) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10
바이모달(Bi-Modal) 트램은 철도의 정시성과 버스의 유연성을 결합한 신 교통수단이며 경전철과 버스의 중간규모 이용자 밀도를 갖는 특성을 가지고 있다. 그러나 바이모달 트램 편성의 한계로 수송수요가 많은 도시의 경우, 수송능력 부족으로 중소도시에서 외면을 받고 있다. 이러한 단점을 해결하고자 수송수요에 탄력적으로 대응 하고 수송량 증대를 위해 중련편성으로 설계하고자 한다. 본 연구에서는 바이모달 트램의 중련연결 시주행 특성 해석을 통해 설계 가능성을 확인 하고자 한다. Bi-Modal tram is a new kind of traffic means with flexibility of bus and punctuality security of train and has a characteristic of having density of middle-scale bus and light subway users. However, the limitation of Bi-Modal tram formation gets turned away by cities with lots of transportation demand because of the shortage of transportation ability. Therefore, in order to solve the disadvantage duplicate is mapped out to cope with the transportation needs flexibly, and to increase the volume of travel. In this study, the possibility of planning through the multibody dynamic analyses of traveling quality is going to be confirmed when duplicated of Bi-Modal.