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안재성(Jaesung, An),권해붕(Haeboog, Kwon),김성범(Sungbum, Kim),용기중(Geejoong Yong) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
This paper is about broadband electromagnetic emission test of domestic vehicles. Disturbances from sources employing Ignition system, Wiper motor, Power antenna, Heater blower motor, Air conditioning compressor, Alternator, Engine cooling or Power seat etc. cause broadband emissions. These devices are used in diesel vehicle as well as gasoline vehicle and broadband noise of diesel vehicles can"t be greatly different from broadband noise of gasoline vehicles. But broadband electromagnetic emission test of diesel vehicle is eliminated from domestic vehicle safety standards. For this reason, diesel vehicle have broadband emission test in Europe electromagnetic regulations at present. Also, the latest International Standards CISPR 25 Edition 3.0 (Radio disturbance characteristics for the protection of receivers used on board vehicles limits and methods of measurement) narrowband/broadband determination article which shall be made to determine whether measured emissions are narrowband or broadband in the test plan was deleted. The results presented in this study indicate that broadband emission test of diesel and Hydrogen fuel cell vehicles are necessary to the vehicle safety standards.
안재성(Jaesung An),김성범(Sungbum Kim),배중호(Joongho Bae),용기중(Geejoong Yong) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
In these days, advanced vehicles such as hybrid electric vehicle, electric vehicle and hydrogen fuel cell vehicle are being developed and researched so rapidly and international standards is being constantly updated. Domestic vehicle safety standards of eletro-magnetic compatibility is recently updated and we feel the need to check if advanced vehicle in being developed is conformed or not with updated standards. For this reason, we have tested about conformance of electro-magnetic compatibility safety standards for Hydrogen fuel cell vehicles as representative of advanced vehicles. Broadband emission tests, narrowband emission tests and immunity tests of hydrogen fuel cell vehicles were carried out under real vehicle test in the EMC chamber. The results presented in this study indicate that Hydrogen fuel cell vehicles in recently developed are conformed with updated vehicle safety standards.
안재성(Jaesung An),김규현(Gyuhyun Kim),장형진(Hyung Jin Chang),홍병창(ByeongChang Hong) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The purpose of this study is to conduct various crash tests of small passenger cars and measure the deformation, occupant injuries and body decelerations of vehicles. A relationship between impact speed and vehicle damage data such as deformation, body decelerations and etc are analyzed. The characteristics of domestic cars in crash tests are obtained and will be used for developing a precise accident reconstruction program by using a data which is recording at Automatic Accident Recording System(AARS). In this study, the test results of the full frontal barrier crash and side impact are reviewed and examined. The results show that the damages and the decelerations of various cars are increased on the increment of the impact speed and vehicle weight.
수소-연료전지 자동차 고전압 전기 안전성 기준에 관한 고찰
신재곤(Jaekon Shin),김성범(Sungbum Kim),안재성(Jaesung An),신재승(Jaeseung Shin),용기중(Geejoong Yong) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
A hydrogen fuel cell vehicle was emerging as an alternative transportation means for the future automotive industry. New safety regulations should be ensured for hydrogen fuel cell vehicle due to different characteristics vehicles in power plant and fuel type. In the world forum for harmonization of the vehicle Regulations(UN/ECE WP.29) the development of the global technical regulations for hydrogen fuelcell vehicles is actively being discussed. UN/ECE WP 29 aims to develope global technical regulations in the field of environment, crashworthiness and electrical safety in the first phase till 2010. This paper explores research issues related to the electrical safety of high voltage system for Hydrogen fuel cell vehicles.
김성범(Sungbum, Kim),강진주(Jinju Kang),안재성(Jaesung, An),배중호(Joongho Bae),권해붕(Haeboog Kwon) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
This paper is about electromagnetic compatibility test of neighborhood electric vehicle and electric vehicle, when they are in charging mode connected to the power grid. Disturbances from sources employing on-board system in electric vehicle cause emissions and immunity. Electromagnetic regulations in UN/ECE WP.29 is under working about vehicles providing coupling systems for charging the RESS regarding the control of emissions and immunity from this connection between vehicle and power grid. However there is no any accurate domestic EMC regulation for charging mode. So this research shows test methods and some results related electric vehicle"s charging mode.
장형진(Hyung Jin Chang),이상율(Sangyul Lee),안재성(JaeSung An),송진화(Jin Hwa Song),임재문(Jae Moon Lim) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
To evaluate the rear seat occupant safety, two frontal barrier tests were conducted according to the test procedures of the New Car Assessment Program (NCAP). The NCAP test method is identical but more severe condition than the vehicle safety regulation of the Ministry of Construction and Transportation (MOCT). In each test, the injury data of head, chest and femur for driver, front and rear passenger dummies were measured and analyzed. The head and chest injury of rear seat passenger dummies are lower than those of the driver and front passenger dummies. The femur load of the rear seat dummies is higher than those of the front seat dummies. The results show that the rear seat passengers are safer than the driver and front passenger. The submarining phenomenon is occurred in the rear seat<br/> passenger dummies. The lower legs of the rear seat dummies pushed the front seat back. The submarining effect of the rear seat passenger dummies may result in the behavior of the driver and front seat dummies. Also, this effect may result in the increase of the injuries of the driver and front passenger.<br/>
김성범(Sungbum, Kim),권순민(Sunmin Gwon),오택원(Tackwon Oh),안재성(Jaesung, An),배중호(Jungho, Bae) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
This paper is about electromagnetic compatibility test of neighborhood electric vehicle, when they are in charging mode connected to the power grid. Disturbances from sources employing on-board system in electric vehicle cause emissions and immunity. Electromagnetic regulations in UN/ECE WP.29 is under working about vehicles providing coupling systems for charging the RESS regarding the control of emissions and immunity from this connection between vehicle and power grid. However there is no any accurate domestic EMC regulation for charging mode. So this research shows test methods and some results related neighborhood electric vehicle’s charging mode
재조합 골 형성 단백-2가 가토의 관절 연골 결손의 연골하 골 재형성 및 연골 치유에 미치는 영향
이석하(Suk Ha Lee),이승준(Seoung-Joon Lee),이종수(Jong Soo Lee),안재성(Jaesung Ahn) 대한정형외과학회 2015 대한정형외과학회지 Vol.50 No.3
목적: 관절 연골 전층 결손이 있는 가토 모델에서 재조합 골 형성 단백-2가 가토의 관절 연골 결손의 연골하 골 재형성 및 연골 치유에 미치는 영향을 분석하고자 한다. 대상 및 방법: 24마리의 수컷 가토의 우측 대퇴골 활차 구에 6×3 mm의 전층 연골 결손을 만든 후에 24마리 중 6마리는 더 이상 처치를 하지 않았으며, 18마리는 결손 부위에 미세 골절을 하였다. 미세골절한 18마리 중 6마리는 다른 처치를 하지 않았고 다른 6마리는 결손 부위에 섬유성 아교를 충전하였으며 남은 6마리에는 결손 부위에 섬유성 아교와 재조합 골 형성 단백-2를 충전하였다. 수술 8주째에 조직학 등급 점수와 real-time polymerase chain reaction을 이용한 콜라겐의 성분 분석으로 미세골절 부위에 충전된 재조합 골 형성 단백-2가 관절 연골의 치유에 미치는 효과를 분석하였다. 결과: 연골 결손 부위를 섬유성 아교와 재조합 골 형성 단백-2로 충전한 6마리에서 조직학적 등급 점수가 더 좋았으며, 콜라겐 1형과 2형도 더 많이 검출되었다. 결론: 미세골절 후 섬유성 아교와 재조합 골 형성 단백-2는 관절 연골 결손 부위에서 연골 치유를 촉진시키고 초자 연골에 근접하게 연골이 치유되게 도움을 줄 수 있을 것으로 생각된다. Purpose: The purpose of this study is to evaluate the effects of recombinant human bone morphogenetic protein-2 (rhBMP-2) after microfracture on the remodeling of subchondral bone and cartilage healing in a model of full-thickness articular cartilage injury in a rabbit. Materials and Methods: A full thickness articular cartilage defect of 6×3-mm-size was created in the trochlear groove of the right femur in 24 rabbits. The defect was left empty in six rabbits, and microfracture was done in 18 rabbits. After microfracture, no treatment was done in six rabbits, defect was filled with fibrin glue in six rabbits, and with fibrin glue and rhBMP-2 in six rabbits. The effect of rhBMP-2 after microfracture was evaluated based on histological analysis and real-time polymerase chain reaction (PCR) for analysis of collagen type at 8 weeks after surgery. Results: The score of histological grade scale of six rabbits in which the defect was filled with fibrin glue and rhBMP-2 was better than that of others and real-time PCR also showed a higher amount of collage type 1 and collage type 2 in these six rabbits. Conclusion: We consider that fibrin glue and rhBMP-2 after microfracture may accelerate cartilage healing in an articular cartilage defect and maybe helpful in healing the articular cartilage defect into more closely native hyaline cartilage.
장형진(Hyung Jin Chang),김규현(Gyuhyun Kim),임재문(Jaemoon Lim),안재성(Jaesung An) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The reconstruction of crash accidents is important to examine the cause of traffic accidents. For this purpose, the data for the delta v and deceleration of the vehicle, a driver's status and the environment of road and facility is a prerequisite. The characteristics of domestic cars in crash tests are obtained and will be used for the purpose of the crash accident reconstruction. Also, the characteristics are used for the method development estimating the impact speed through investigating the damage of cars. In this study, the test results of the full frontal barrier crash, the 40% offset crash, the center pole frontal crash and the 30 degree oblique frontal crash are reviewed and examined. The results show that the damages and the decelerations of various cars are increased in proportion to the increment of the impact speed.