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5% 여성 Dummy 적용에 따른 KNCAP 대응 방안에 대한 연구
최준현(Jun-hyun Choi),김봉석(Bong-seok Kim),최환준(Hwan-jun Choi) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
This study is not only to evaluate the injury of 5th percentile female dummy with respect to New KNCAP, but also to achieve the KNCAP target using methodological approach of variable restraint systems. In this paper, investigating dominant fatal factors using CAE analysis and optimizing restraint systems variations to reduce Head, Neck injury and Chest deflection are explained.
유병주(Byong-Ju Yoo),박지승(Ji-Seung Park),이상기(Sang-Ki Lee),최준현(Jun-Hyun Choi) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_3
The purpose of this investigation was to develop a better understanding of the effect of restraint system and vehicle pulse. TTF with DOE (Design of Experiments). To this end, several vehicle pulses and restraint systems were used in an occupant simulation with MADYMO, from which the corresponding injury criteria were calculated according to US-NCAP assessments. A solution procedure using numerical optimization is proposed. The pulses of 14 vehicles were benchmarked. And 4 idealized frontal crash pulses were sampled. To get exact results, a number of air bag drop test and a seat belt elongation test were performed and correlated with simulation.<br/> Generally two analysis methods, a real experiment and computer simulation, are utilized to design safety occupant protect system at 56㎞/h full frontal crash. However, the computer simulation is often used due to budget restrictions. It would be optimized to obtain all the data from computer simulation to identify the design tendency. In this research, orthogonal arrays were employed in DOE study. The number of simulation was allocated to 32 rows of an orthogonal array, Based on the proposed methods, Vent Hole. Seat belt Load Limiter. Vehicle Pulse, TTF as factors were optimally designed to meet the occupant protection requirements (US-NCAP). The results show the main effect of each factor and the interactive effects between factors.
중성화와 화재를 입은 구조물의 내구성 향상을 위한 침투성 알칼리성 부여재의 이용 기술 개발
신홍철 ( Shin Hong-cnol ),강석표 ( Kang Suk-puo ),김규용 ( Kim Gyu-yong ),권영진 ( Kwon Young-jin ),최준현 ( Choi Jun-hyun ),김무한 ( Kim Moo-han ) 한국구조물진단유지관리공학회 1997 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.1 No.1
The reinforced concrete structures were once belived to have permanent durability. However, it is now spoiled by durability failure caused by the corrosion of embeded steel reinforcement, salt, a1ka11-aggregate reaction and carbonation attack recently, carbonation has been also spreading. Therefore, it is the aim of this study to introduce the repair system with impregnating alkalization agent for the concrete structure by durability failure caused carbonation and fire, and to fix this repair system in our country according to showing the example of application.