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박귀성(Gwi-Sung Bak) 산업기술교육훈련학회 2010 산업기술연구논문지 (JITR) Vol.15 No.1
The purpose of this investigation is to estimate the strength with the variations of shape and the adhesive condition at the fiber/matrix micro interface of E-glass/PP laminates. To promote the degradation of the adhesive condition at the fiber/matrix micro interface without matrix dissolution loss, low-, hot-wet and spiking tests were carried out. The absorption properties and the tensile properties were compared according to the fiber orientation and the content. The results show that, firstly, saturated moister absorption was reached at 5cycle and their absorptions of RD-40, UD-42, and UD-50 are 0, 0.63%, 0.60%, respectively. Secondly, all the specimens investigated were mostly degraded at 5cycle, whereas UD-50 having ellipse shaped ellipse the least decrement of strength.
섬유강화 복합재료에 접착 성형한 금속소재가 전자파 차폐효과에 미치는 영향
박귀성(Gwi-Sung Bak) 산업기술교육훈련학회 2010 산업기술연구논문지 (JITR) Vol.15 No.2
This study investigated electromagnetic interference(EMI) shielding effectiveness(SE) of the copper mesh and aluminum film / fiber reinforced composites. We fabricated glass and carbon fiber reinforced composites filled with nano carbon black. The measurements of SE were carried out frequency range from 300MHz to 1.5GHz. It is observed that the SE of the bonded copper mesh and aluminum film. The aluminum film bonded composites showed higher SE compared to that of copper mesh. The aluminum film bonded epoxy composite was shown to exhibit up to 55~75dB of SE. The result that aluminum film bonded composite can be used for the purpose of EMI shielding as well as for some microwave applications.