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이해훈,정필상,강종구,Lee, Hae Hoon,Chung, Pil Sang,Kang, Chong Ku 한국자동차안전학회 2021 자동차안전학회지 Vol.13 No.4
This study is intended to augment the Roof strength test being evaluated by IIHS (Insurance Institute for Highway Safety). In order to find solutions for increasing Roof Crashworthiness Evaluation SWR (Strengthto-weight ratio). This study introduces that Integrated Connection Structure Between Center Pillar and Roof Center Rail is proposed as a critical solution.
이해훈,위성개,김원건,박대명,Lee, Hae Hoon,Wee, Sung Gae,Kim, Won Gun,Park, Dae Myoung 한국자동차안전학회 2018 자동차안전학회지 Vol.10 No.3
This research is to optimize Single-Piece Side otr reinforcement using Hot-stamping and to strengthen weak regions on Single-Piece Side otr reinforcement. As a consequence, the weight and the number of parts were reduced and resulting in improvement of impact and stiffness performance when compared to multi-piece construction.
이해훈,김행범,배주순,윤석태,오강호,김해경,고영구 全南大學校 師範大學 科學敎育硏究所 2005 科學敎育硏究誌 Vol.29 No.1
Analyzing stream waters in the Iyang-myeon of Hwasun with the aspects of water quality and contamination, total 21 water samples from the above area were taken. The stream waters are natural on the basis of 4.6-8.4 of pH, 167-365mV of Eh, 25-170 of TDS. And, and in cation and HC in anion relatively dominate in the waters, respectively. The waters show contamination indices of 0.7-23.0 of turbidity, 0.9-3.1 of , 1.0-3.4 of C, 0.0-62.3 of S. So, the waters might be not contaminated in heavy metals except for the very weak influence by coalfield near the study area.