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김귀남(Gwi-Nam Kim),김지혜(Ji-Hey Kim),성헌진(Heon-Jin Seong),전종훈(Jong-Hoon Jeon),허선철(Sun-Chul Huh) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
This study was designed to examine the physical disintegration of graphene(GN), the excellent heat conductor, by using the planetary ball mill, the simple and convenient means to produce particles arbitrarily. The conditions for the disintegration of grapheneGN were distinguished by the rotation of planetary ball mill (200 rpm, 400 rpm, and 600 rpm) and by the duration of its operation (30 min., 60 min., and 90 min.), respectively. At this result, when experimental condition is 200rpm with 60min, particle size was the smallest to 328nm and results of thermal conductivity was the highest. In results of absorbance, grapheneGN was well dispersed because value of absorbance is high.
Lattice Boom Crane의 설계 및 유압 시스템 해석에 관한 연구
김지혜(Ji-Hye Kim),김귀남(Gwi-Nam Kim),성헌진(Heon-Jin Seong),정창권(Chang-Kweon Jeong),윤영환(Yong-Hwan Yoon),정용길(Yong-Gil Jung),김영주(Young-Ju Kim),허선철(Sun-Chul Huh) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
In this paper, the study on the design and Analysis of Hydraulic System of Lattice Boom Crane is presented. Since Lattice Boom Crane is primarily used on the sea, stable motion of hull under various sea conditions and ensuring safety against outer forces under a variety of atmospheric conditions should be a priority. In this research, Lattice Boom Crane was the satisfy of safety and evaluated its efficiency. This paper can be utilized in developing a range of crawler crane as well as Lattice Boom Crane.