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아라미드 나노섬유로 강화된 탄소섬유 강화 복합재료의 동적 기계적 특성 분석
구민예(MinYe Koo),양철민(Cheol-Min Yang),이교우(GyoWoo Lee) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
In this study, CFRPs (carbon fiber reinforced plastic) reinforced with ANFs (aramid nanofibers) were fabricated to investigate the dynamic mechanical analysis (DMA). Also, CFRPs reinforced with MWCNTs (multi-walled carbon nanotubes) were produced to be compared for filler effects in the composites. Those nano filler reinforced CFRPs were made by a hand-ray up method and vacuum bagging process. Through the tan δ of DMA, the damping property was evaluated. CFRPs reinforced with ANFs showed a higher tan δ than the neat CFRP by the effect of boundary sliding (filler-filler) and interfacial sling (filler-matrix). Improving damping property from tan δ results was expected to lead the energy dissipation when the external force was applied.
강윤식(Yunsik Kang),강희용(Heeyong Kang),이교우(Gyowoo Lee),양성모(Sungmo Yang),김민수(Minsoo Kim),이성기(Sungki Lee),김쾌만(Queman Kim) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, weight reduction for an automobile component has been sought to achieve fuel efficiency and energy conservation. So many automobile components is producted by engineering plastic. Therefore this parts is important safety evaluation. In this paper, we presents effectiveness of leaking tester for safety evaluation in battery case made by injection molding. In oder to analyze the stress&displacement of this component, we need to conduct structure Finite Element Analysis. Test condition was decided using this work. And leaking tester is tested using test system, tester function was evaluation. Finally, it was conclude decision standard through results of test. Additionally, safety of impossible test condition is evaluated through FE analysis.