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원자력발전소 1 차 계통 주요기기에 대한 웹기반 피로수명평가 시스템 개발
서형원(Hyong-Won Seo),이상민(Sang-Min Lee),최재붕(Jae-Boong Choi),김영진(Young-Jin Kim),최성남(Sung-Nam Choi),장기상(Ki-Sang Jang),홍승렬(Sung-Yull Hong) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
A nuclear power plant is composed of a number of primary components. Maintaining the integrity of these<br/> components is one of the most critical issues in nuclear industry. In order to maintain the integrity of these<br/> primary components, a complicated procedure is required including regular in-service inspection, failure<br/> assessment, fracture mechanics analysis, etc. Also, experts in different fields have to co-operate to resolve the<br/> integrity issues on the basis of inspection results. This integrity evaluation process usually takes long, and thus,<br/> is detrimental for the plant productivity. Therefore, an effective safety evaluation system is essential to<br/> manage the integrity issues on a nuclear power plant. In this paper, a web-based fatigue life evaluation system<br/> for primary components in nuclear power plant is proposed. This system provides engineering knowledgebased<br/> information and concurrent and collaborative working environment through internet, and thus, is<br/> expected to raise the efficiency of integrity evaluation procedures on primary components of a nuclear power<br/> plant.
TFT-LCD 모듈의 내충격성 향상을 위한 통합 CAE 시스템의 개발
서형원(Hyong-Won Seo),문성인(Seong-In Moon),구자춘(Ja-Choon Koo),최재붕(Jae-Boong Choi),김영진(Young-Jin Kim),최성식(Seong-Sik Choi),이정권(Jeoung-Gwen Lee) Korean Society for Precision Engineering 2004 한국정밀공학회지 Vol.21 No.9
Anti-shock performance is one of the most important design specifications of TFT -LCD modules. Since they are adopted for major display units of many mobile applications such as lap-top PCs, cellular phones, and palm pilots, they are able to accommodate and endure high level transient mechanical energy inputs. For the reasons, not only the LCD unit manufacturers but their customers like PC makers perform a series of strict impact/drop test on the units. Currently, designers are mostly relying on their own trial-error based experience for the anti-shock design. Thus those designs depending on only experience may result in disqualification from the drop/impact test during final product evaluation. Those shock failures of any new designs are prohibitive for both LCD and PC manufacturers. In order to avoid this problem, many designers are focusing on the development of computer-aided design tools that is directly connected to shock simulation capabilities and then shock-proof design cycle time could be significantly reduced. Development of an integrated CAE system for the shock-proof design is presented in this article. At every stages of the development of present work, practical industrial applicability and mass production feasibility are seriously considered and tested so that the system is to be used in the LCD design engineering field.
Carpet Tile 재료 물성 평가 및 충격 해석에의 응용
김윤회(Youn-Hoi Kim),최찬호(Chan-Ho Choi),전호진(Ho-Jin Jeon),서형원(Hyong-Won Seo),이용희(Yong-Hee Lee) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
As a result of minimalism and high-tech of portable electronic devices, manufactures require meeting designated reliabilities of devices. FEA is also undertaken to predict reliabilities. Among those FEA, acquiring numerical model of materials is a main key process. Complexity of composites materials requires an ideal approach due to its unpredictable behaviors. Carpet tile consists of multiple materials, polymers, and adhesive. By combining multiple materials, Carpet tile has material property distinguished from original materials’7 behaviors. This paper outlines a new approach to acquiring carpet tile material property utilizing an apparatus for high speed camera.