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- 저자 : 서관호(Kwanho Seo) (검색결과 4 건)
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조재호,서관호,이화수,이민수,Cho, Jaeho,Seo, Kwanho,Lee, Hwasoo,Lee, Minsu 한국자동차안전학회 2013 자동차안전학회지 Vol.5 No.2
Motor vehicle crashes are the leading cause (70%) of children injury and fatality. 98% of Children under the age of 9 who came to emergency room with a traffic accident are not seated in CRS. Reduction in mortality when using CRS (NHTSA study), 71% for infants of 1-2 years old, 54% for 3-6 years old and 7-12 years old. It is very important and essential to use CRS for child passenger safety. But in Korean market, the CRS fitment rate is relatively low (20~40%). For European market, at the start of 2013, Euro NCAP started to check how easy it is to install the most common seats. And US market, NHTSA is planning a new consumer information program of CRS fitment for near future. This study examines CRS installation performance of 3 vehicles which are produced by GM Korea and 21 CRS which are based on sales volume in Korean market. Purpose of this study is to identify both vehicle and CRS design that causes bad interaction for CRS installation.
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USNCAP 전방충돌 여성 더미 목 상해치 개선을 위한 연구
김홍선(Hongsun Kim),박규일(Kyuil Park),서관호(Kwanho Seo) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
In frontal US New Car Assessment Programs (NCAP), which is designed to provide an assessment of the structural impact and occupant protection performance, the 5th %ile female Hybrid III dummy is used in the right front passenger position, and neck Nij injury assessment reference value is the most important factor to improve occupant performance. From this research, realistic interaction ,between dummy and airbag, is generated using LS-Dyna Particle Method, also, the structural cause of neck injury and critical parameter, influenced neck injury are identified. Furthermore, this study shows improvement of neck injury from the parameter study of restraint system.
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김관희(Guanhee Kim),임종훈(Jonghun Lim),서관호(Kwanho Seo),김정근(Jeongkeun Khim) 한국자동차공학회 2013 한국자동차공학회 학술대회 및 전시회 Vol.2013 No.11
91 domestic vehicles have been tested according to Korean New Car Assessment frontal crashworthiness test protocol, and 52 out of the 91 vehicles are rated 5 star, which means the highest frontal crashworthiness. Only 12.5% of the test vehicles were rated 5 star before 2002 while 73.1% of the test vehicles were rated 5 star since 2003. The portion of 5 star rated vehicles are increased by 6 times during the last ten years. Even though vehicle frontal crashworthiness improved, the deaths in frontal crash impact do not decreased. In 2012, 329 occupants were died in frontal crash, this is 17.1% decreased compare to that of 2002, but the deaths in frontal crash occupies about 15.7% of the vehicle to vehicle deaths and this is 1.3%P higher than that of 2002. This figures show that the KNCAP frontal crashworthiness test protocol does not enough to reflect the real world frontal crash accident. In this study we conducted small overlap frontal crash according to IIHS test protocol, which occupies high portion of deaths in frontal crash, to evaluate vehicle frontal crashworthiness.
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오성준(Sungjoon Oh),이기황(Kihwang Lee),권남석(Namseuck Kwon),서관호(Kwanho Seo) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
An electric vehicles, which are powered by the rechargeable energy storage system standing for high voltage power, provide the people and society with great benefits, while there are a couple of considerations and challenges in developing the electric vehicle. One of the challenges is to secure the driver and people from the high voltage in the crash and some collision events. If human would be directly exposed to high voltage, human could be injured by electric shock, and if the high voltage components would be shorted to the vehicle chassis due to a collision and component damage, a large current might flow into the human body and cause dangerous results. Therefore, in order to prevent accidents related to high voltage during a crash collision and to make vehicle safe, the relevant standards and specifications need to be strengthened for high voltage system safety. Isolation resistance can be a good indicator for the assessment of high voltage system safety during and after the crash collision. The value can be calculated by measuring the voltage between high voltage components of the electric vehicle. Besides of FMVSS 305, the high voltage safety standard of United States, the ECR R94’s requirement regarding low voltage after the crash states that the voltage measurement shall be made not earlier than 5 seconds, but not later than 60 seconds after the impact. However, it is difficult to measure the value during the timeframe in accordance with the statement in the lab environment, especially isolation resistance during and after the crash, because the high voltage systems are to be cut-off right after the crash collision for the safety of the people who might be exposed to high voltage in accessing the tested vehicle. Therefore, the specific measurement device, which has the internal high voltage source, was developed to measure the isolation resistance in the specified timeframe for internal crash collision in engineering the electric vehicle. The measurement device operates as a data logger and continuously records the isolation resistance properties of the high voltage system of electric vehicle during and right after crash. The voltage data measured can be used to calculate actual electrical isolation resistance for the subject collision, and the device has been verified through a couple of barrier test for the electric vehicles in GM Korea.
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