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Lattice Boom Crane의 지진 응답스펙트럼해석을 고려한 구조해석에 관한 연구
성헌진(HeonJin Seong),양정현(JeongHyeon Yang),정용길(YongGil Jung),허선철(SunChul Huh) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
In 2016, the strongest earthquake (5.8) occurred on the Gyeongju in Korean peninsula, As the second strongest earthquake (5.4) occurred in Pohang in 2017, the trend of domestic earthquakes is also increasing every year. Recently, as the intensity and frequency of earthquakes increase, research on seismic design of buildings, structures, etc. has attracted much attention. In this study, stress distribution and safety factor were confirmed through structural analysis of 60 - ton class fixed type Lattice Boom Crane, The stability of seismic load was also verified through response spectrum analysis.
계면활성제를 첨가한 그래핀 나노유체의 분산 특성에 관한 연구
성헌진(HeonJin Seong),정효민(HyoMin Jeong),박준성(JounSung Park),전종훈(JongHoon Jeong),허선철(SunChul Huh) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
Graphene has excellent electrical conductivity, mechanical properties, and heat transfer properties. It is expected that the heat transfer efficiency will be improved by fabricating the nanofluid. However, graphene is prone to sedimentation because of its cohesion due to van der Waals’ binding forcein this study, we fabricated a nanofluid with enhanced dispersibility by surfactant and ball milling process. The dispersibility, zeta potential, absorbance and thermal conductivity of the nanofluid was measurede.