• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집D
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• pp.164-169
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• 2001

There is a chilled ceiling panel which carries out the air conditioning by radiation and convection between the room and cold ceiling panel surface. In order to verify heat transfer characteristics between them in cooling system with radiant chilled ceiling panel, analytical and experimental studies were performed for various design and operating parameters such as tube space and diameter, inlet water temperature, mass flow rate, cooling load, and so on. In this study, we found that the tube space and inlet water temperature were more important elements than the tube diameter and water flow rate for the performance of radiant chilled ceiling panel. The cooling capacity of the radiant chilled ceiling panel had the maximum value of $65W/m^{2}$ because the highest cooling capacity was limited by the condensation on the panel surface. The results of comparison between numerical analysis and experiment showed a resonable agreement qualitatively, especially for low cooling capacity.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.2701-2706
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• 2003

This paper describes weld seam tracking and error compensation methods of automatic plasma arc welding system designed for the corrugation panel that consists of a linear section and a curved section with various curvatures. Realizing automatic welding system, we are faced with two problems. One is a precise seam tracking and the other is an arc length control. Due to the complexity of the panel shape, it is difficult to find a seam and operate a torch manually in the welding process. So, laser vision sensor for seam tracking is equipped for sensing the seam position and controlling the height of a torch automatically. To attain more precise measurement of an arc length, we measure the 3D shape of the panel and analyze error factors according to the various panel states and caused errors are predicted through the welding process. Using that result, compensation algorithm is added to that of arc length control and real time error compensation is achieved. The result shows that these two methods work effectively.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.126-131
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• 2004

The popularity of flat-panel display(FPD), including plasma display panel(PDP) and liquid-crystal display(LCD), has given rise to the need to streamline their production. In these days, PDP is one of the most popular display devices because of its expansion of manufacturing process and simplicity. Bus electrodes, sustain electrodes, barrier ribs and RGB phosphors are patterned on PDP panel to display an image. Since a minute damage on the pattern can cause a serious defect to display, it is important to inspect the pattern precisely. In this paper, an automatic inspection system of repeated pattern in PDP panel has been introduced to find the defect, such as open, short, dirt, island, and so on. And the inspection system has been operated in the mass production line of PDP.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1989년도 가을 학술발표회 논문집
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• pp.49-52
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• 1989

This report introduces the large scale prefabricated apartment project in Saudi Arabia designed and built by Hyundai Engineering and construction Co. as turn-key basis from ministry of Public works and ltousing of Saudi Arabia. This project using precast large panel system is 7,600 dwelling unit, total building area 1.8 mil sguare meters. Large panel system is a kind of industrialized building method which classified as monolithic system, total system and structural system. Hyundai Engineering and Construction Co. develop his own prefabricated large panel system for this project and named "HYUNDAI SYSTEM". The key point of this system is vertical and horizontal joints between panels. Also stability of whole building structure is especially important for this kind of prefabricated building. building.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 춘계 학술논문 발표대회 1부
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• pp.153-155
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• 2011

In this study, an insulation panel system that has the most excellent economic feasibility in a long term LCC viewpoint in some analysis, which determine a proper insulation panel construction method for the out wall of structures, is analyzed. As a result, in the case of a deterministic LCC analysis, the initial investment cost represents about 80,000Won/㎡ for extrusion ceramic panels. Also, although the costs of maintenance, disassembling, and disposal show no large differences compared with other panel systems, metal panels indicate a bit higher than other panel systems about 1.5 times. In the probability density function that analyzes the variation of the probabilistic cost between panel systems and its economic feasibility, metal panels show the highest cost distribution and extrusion and stone panels represent low cost distributions. In the cumulative function distribution that composites probability density functions, the extrusion ceramic panel represents the most excellent economic feasibility and reliability and that is also the most superior subject among the subjects used in this study.

• 항공우주시스템공학회지
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• 제13권1호
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• pp.18-28
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• 2019

초고속 비행체는 발사 및 재진입 시 공력 가열에 의해 높은 열 하중을 받는다. 초고속 비행체의 외피 구조물인 열방어 시스템 패널은 기계적으로 구속되어 있기 때문에 고온 가열 시 열 좌굴이 발생할 수도 있다. 이는 초고속 비행체의 유동장에 변화를 주어 공력특성을 불안정하게 한다. 따라서 열방어 시스템 패널은 초고속 비행에 의한 공력가열 시 비행안정성을 유지하기 위해 열 좌굴을 방지하도록 설계되어야 한다. 본 논문에서는 운용 시 안팎에 큰 온도차가 존재하는 열방어 시스템 패널에 대해 유한차분법을 사용하여 열전달 특성을 분석하였으며, 리츠 법을 사용하여 열 좌굴 특성에 대한 근사적 모델을 제안하였다. 또한 정의된 근사적 모델의 정확도를 검증하기 위해 유한요소 해석결과와 비교하였다. 마지막으로, 수립된 근사 기법을 바탕으로 열방어 시스템 패널의 좌굴 발생 온도에 대한 매개변수 분석을 수행하였다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.106-106
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• 2000

This study is to embody automatic inspection system of motor body panel by visual system. since it is inefficient to examine the adhesion condition of components with the naked eye, picture processing algorithm is presented to replace the existing manual inspection process with an automatic inspection process. The developed automatic inspection system presents the examination method of the adhesion condition of components with a ixed camera, which leads to an increase of the productivity and a reduction of manufacturing cost.

• 한국재료학회지
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• 제17권7호
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• pp.352-357
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• 2007

Since a pattern defects "repair" system using a diode pumped solid state laser for Flat Panel Display (FPD) was suggested, a lot of laser systems have been explored and developed for mass-production microfabrication process. A maskless lithography system using 405 nm violet laser and Digital Micromirror Device (DMD) has been developed for PDP and Liquid Crystal Display (LCD) Thin Film Transistor (TFT) photolithography process. In addition, a "Laser Direct Patterning" system for Indium Tin Oxide (ITO) for Plasma Display Panel(PDP) has been evaluated one of the best successful examples for laser application system which is applied for mass-production lines. The "heat" and "solvent" free laser microfabrications process will be widely used because the next-generation flat panel displays, Flexible Display and Organic Light Emitting Diode (OLED) should use plastic substrates and organic materials which are very difficult to process using traditional fabrication methods.

• 한국산학기술학회논문지
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• 제8권3호
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• pp.483-487
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• 2007

본 연구에서는 TFT-LCD Panel 생산한 후 Panel을 검사하는 공정에서 사용되는 Ti-Con 보드의 동작 상태를 실시간으로 모니터링하고 원격지에 있는 엔지니어에게 TCP/IP를 이용하여 고장 유무를 판별할 수 있는 데이터를 전송함으로써 신속한 대처가 가능할 뿐만 아니라 다중 프로세스가 가능하도록 제어할 수 있는 시스템을 개발하였다.

• 한국안광학회지
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• 제5권1호
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• pp.31-37
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• 2000

제1~3색각 이상 검사용 Farnsworth Dichotomous Test Panel D-15의 칼라분석을 위하여 380~780 nm의 반사광 spectrum 세기를 측정하여 CIE system을 도입하였다. Panel D-15의 색상변환은 650nm 이상, 500~600 nm, 400~450 nm의 3개 파장영역의 광 반사율 세기에 의존한다. 반사 spectrum으로부터 3극치 X, Y, Z 값, 보색 평면과 명암축으로 하는 3차원 CIELAB system의 $L^*a^*b^*$와 Lab 값, CIELUV system $U^*V^*$ 값, 색도도 좌표 x, y 값을 구했다.