• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2005년도 추계 학술발표회 제17권2호
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• pp.121-124
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• 2005

The existing reinforcement methods of construction are the actual condition without the method of checking exact injection of adhesives clearly by the opacity of reinforcement material. In this study, in order to solve such a problem, the high strength transparent panel using a glass fiber is developed and in order to examine reinforcement effect of a panel clearly, the structure performance evaluation experiment was conducted. As a result, we knew that it can check with the naked eye the injection process of adhesives and reinforcement effect was also observable.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1479-1482
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• 2006

Potentials and advantages of recently proposed raised bus electrode plasma display panel is discussed in terms of luminous efficiency, addressing speed. Detailed experimental and simulation results, which shows mechanisms of high efficiency driving mechanism, will also be given. Apart from the cell structure, we introduce new high efficiency driving method that can be applicable to conventional ac Plasma Display Panel.

• 한국전기전자재료학회논문지
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• 제28권8호
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• pp.524-530
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• 2015

We propose a three-electrode type electronic paper display and its fabrication process to realize single color at the same display panel. We establish a fabrication process with the mixing of electronic ink, loading of this ink, electronic ink assembly, packaging and driving. Also, we discuss an operating principle of this panel and the induced image reversal phenomenon by electric field area of the lower electrodes. This phenomenon is not occurred for the panel having $10{\mu}m$ electrode space. By this pixelation structure like this three-electronic paper display, a single color realization without color filter is possible and various kind of color is defined by a dye selection for charged particles and electrically neutral fluid.

• 한국정보통신학회논문지
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• 제15권11호
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• pp.2313-2320
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• 2011

조선소에서 판넬블록 생산공정은 가장 많은 물량을 처리해야 하는 중요하고 복잡한 공정이 고, 모든 선박 및 해양구조물의 하부는 반드시 판넬블록 생산 공정을 거쳐야 하기 때문에 판넬블록 생산공정은 병목공정으로 평가된다. 공정의 생산성을 극대화하기 위해 본 논문에서는 디지털 선박생산에서 가장 중요한 기술 중의 하나인 시뮬레이션과 최적화기법을 활용하여 조선생산실행시스템(SPEXS)을 개발하였고, 판넬블록조립장 적용사례로 SPEXSPanel을 구축하여 향상된 일정계획을 수립하는 효과를 보였다. 더불어 SPEXS-Panel은 지속적인 개선을 통해 야드 생산성 향상에 도움을 줄 수 있을 것으로 기대된다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권2호
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• pp.871-888
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• 2020

With the development of display engineering and technology, the screen and sound quality of information devices such as TVs are improving. The screen used LEDs via LCD and PDP and a large flat panel in the early CRT to create super-high resolution. The sound is improved by directly vibrating a thin and simple panel, such as an OLED. In our previous study, the exciter speaker was attached to the rear of the OLED panel to be used as the diaphragm of the speaker, and the sound quality was as good as that of the TV using the existing dynamic speaker. This method supplied the viewer with the direct sound coming from the panel, delivering clear sound, and the sound and image came from the same location, thus giving the viewer high immersion and maximizing the effect of information transfer. OLED exciter speakers, however, have a special directivity, which tends to slightly attenuate the tone at the very center of the screen. This study improves the sound quality by improving the structure of the exciter speaker and the radiated sound of the flat panel display. A 2-in-1 Exciter is made into a single core to improve the speaker's radiation pattern.

• 대한토목학회논문집
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• 제36권1호
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• pp.13-19
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• 2016

본 연구는 ESS 물탱크 패널의 최적 절곡깊이 산정에 관한 연구이다. 스테인레스 패널에 프레스 작업을 하게 되면 엠보싱부분의 패널 두께가 감소되며, 감소된 패널 두께는 체적보존의 가정을 이용하여 계산하였다. 해석을 위해 STS304 재료를 사용하였으며, 유한요소해석을 통해 결과를 산출하였다. 유한요소해석결과 아치엠보싱 패널의 최적 절곡깊이는 70~90mm로 평가 되었으며, 피라미드 엠보싱패널은 150~200mm로 평가되었다. 최적절곡깊이의 제안 값은 ESS 물탱크 패널의 경제적 설계에 효과적일 것으로 판단된다.

• 한국도로학회논문집
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• 제16권3호
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• pp.1-8
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• 2014

PURPOSES : The purpose of this paper is to demonstrate to the practicing engineers, how to apply the advanced composite materials theory to the road structures. For general construction material used, there is certain theoretical limit in sizes. For super road structure construction, the reduction in panel weight is the first step to take in order to break such size limits. METHODS : For a typical road structures panel, both concrete and advanced composite sandwich panels are considered. The concrete panel is treated as a special orthotropic plate. RESULTS : All types of advanced composite sandwich panels are considered as a self-weights less than one tenth of that of concrete panel. The concrete panel is treated as a special orthotropic plate to obtain more accurate result. CONCLUSIONS : Advanced composite sandwich panels are considered as a self-weights less than one tenth (10%) of that of concrete panel, with deflections less than that of the concrete panel. This conclusion gives good guide line for design of the light weight of road structures.

• 한국항공우주학회지
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• 제36권12호
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• pp.1201-1206
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• 2008

본 연구는 과학기술위성3호 개발을 위한 proto 모델의 진동모드 특성 규명에 관한 것이다. 과학기술위성3호(STSAT-3)의 구조체는 탄소섬유강화복합재료 면재(skin)를 가진 허니컴 샌드위치패널로 설계되었으며, 고유진동수 설계 요구조건을 만족하면서 최적의 복합재 구조체를 결정하기 위하여 다수의 예비형상 모델이 개발되었다. 유한요소해석을 통하여 각 예비 형상 모델에 대한 모드특성이 해석되었고 그 결과들이 서로 비교 검토 되었다. 본 연구를 통하여 내부 지지 패널을 가진 직육면체 박스구조 형태가 타 모델에 비하여 상대적으로 높은 첫 번째 고유진동수를 가지고 강성이 높다는 결과를 얻었다. 또한 해석된 모델 모두 첫 번째 모드는 횡방향의 굽힘모드인 것으로 나타났다.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2006년도 춘계학술대회 논문집
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• pp.300-303
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• 2006

Sandwich panel with inner structure is expected to find many applications because of high stiffness to mass ratio. However, low resistance to the pressure in the thickness direction may become a weak point in the forming process. Two pyramid type designs for inner structure are considered. For the resistance characteristics in the thickness direction, finite element simulations are carried out. For one design, experimental results are provided. It is shown that simulation can give a reasonable agreement with experiment. The reasons for the discrepancy are discussed mainly in the geometrical viewpoint. It is observed that most of deformation depends on bending mode. Two designs are compared using simulation.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.672-676
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• 2009

Polymide is widely used alignment material of recent commercial LCD panel structure. Generally, polyimide alignment material is classified soluble polyimide type and polyamic acid type with their main bond structure of solution state. specially, compared to polyamic acid alignment layer, soluble polyimide type alignment layer have excellent reliability during long term LCD driving cause of their high imidazation ratio(%), high voltage holding ratio(%) and low ion density. The other side, this type alignment materials has significant DC image stickicng side effect for using in-plane switching mode lcd structure cause of their slow DC discharging property. we applied inorganic salt to usual soluble polyimide type alignment layer and found out this technique had good DC image sticking property without any loss of reliability property in inplane switching LCD cell structure. This approach leads excellent DC image sticking property with maintaining high reliability property this approach confirmed improves an image sticking and a reliability simultaneously from the horizontality aligned LCD mode whose relatively bad image sticking property.