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이주철,장덕석,김동식,Lee, Joo-Chul,Jang, Deok-Suk,Kim, Dong-Sik 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.2
Liquid-assisted cleaning technology utilizing a nanosecond laser pulse is effective for removing submicron particulates from a variety of solid substrates. In the technique, saturated vapor is condensed on a solid surface to form a thin liquid film and the film is evaporated explosively by laser heating. The present work studies the role of liquid-film evaporation in the cleaning process. First, optical interferometry is employed for in-situ monitoring the displacement of the laser-irradiated sample in the cleaning process. The experiments are performed for estimating the recoil force exerted on the target with and without liquid deposition. Secondly, time-resolved visualization and optical reflectance probing are also conducted for monitoring the phase-change kinetics and plume dynamics in vaporization of thin liquid layers. Discussions are made on the effect of liquid-film thickness and dynamics of plume and acoustic wave. The results confirm that cleaning force is generated when the bubble nuclei initially grow in the strongly superheated liquid.
Layered Nanofiller-Reinforced Polyketone Composites
이주철,이광훈,김대흠,임순호,이상수 한국고분자학회 2013 Macromolecular Research Vol.21 No.11
For the polyketone-based composite employing layered nanofillers such as organoclay prepared by melt processing, the effects of layered nanofillers on morphology, structural and mechanical properties of the composites were examined in terms of nanofiller concentration and processing condition. Polyketone clearly exhibited certain degree of intercalation, although highly suppressed in certain cases, and organoclay modified with hydrophilic intercalant molecules showed a much higher interaction with polyketone, resulting in more uniform dispersion of organoclay within polyketone matrix, and correspondingly notable improvement of mechanical properties.
이주철,이위문,Lee, Ju-Cheol,Lee, Wi-Mun 한국전기기술인협회 2004 電力技術人 Vol.265 No.9
전기 사업법의 규정에 의한 기술기준은 전기설비의 안전 확보를 위하여 필요한 최소한의 사항을 준수하도록 의무화 하고 있다. 또 전기관련 기관 · 학계 · 단체 및 업계의 참여로 작성되는 전기설비의 ┌기술규정┘은 이러한 기술기준에 필요한 기술적인 사항을 규정함과 동시에 민간자율규정으로서 설계, 시공, 유지, 검사 등에 관한 사항을 구체적이고 알기 쉽게 풀이하여 전기사업자를 비롯한 전기설비의 시설자, 공사 관계자가 지켜야 할 사항을 그 내용에 따라 의무적 사항, 권고적 사항, 권장적 사항으로 구분하여 규정하고 있다.(중략)