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차대차 충돌평가(MPDB)에서 충돌 각도 및 젖힘자세 특성 등에 따른 승객 상해 연구
인정민,마재홍,장형진,전준호 사단법인 한국자동차안전학회 2023 자동차안전학회지 Vol.15 No.3
As advanced driving assistance system (ADAS) and autonomous driving performance continue to improve, existing crash accidents and crash types are changing. Accordingly, the collision angle and the seating posture of the occupant are changed. It is necessary to study how the occupant injury mechanism changes according to these different crash types. In this regard, a representative crash test mode was derived when the automatic emergency braking system (AEB), one of the autonomous driving performance, was applied to the representative car-to-car crash scenario in Korea. The derived crash test mode was used to analyse the mechanisms of collision injuries according to both impact angle and the occupant seating posture (reclined seat-back angle). The results obtained through this study can be utilized as reference data for the development of new crash evaluation methods and improvements in crash restraint systems for enhancing crash safety.
고압가스 내압용기 장착 대형상용차의 측면충돌 시 연료장치 안전성 평가 방법에 관한 연구
인정민(Jeongmin In),한현민,김시우,신재호(Jaeho Shin) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
Heavy duty vehicles equipped with high pressure vessels are expected to expand the supply of hydrogen commercial vehicles like large bus and trucks according to the governments hydrogen economy roadmap (2019 yr). In particular, the hydrogen fuel pressure vessels have high pressure about 700 bar unlike other fuel pressure vessels, so there are possible to high severe accidents due to damage and leakage of the fuel system when happened side collisions and rollover accidents from actual roads. high. Currently, there is no actual vehicle crash evaluation(Full scale crash test) for fuel system integrity of heavy duty vehicles of post-crash through worldwide except Korea. The regulations applied the alternative acceleration test (Sled) that evaluates only the severity according to the inertial load in the case of a collision. Korea does not also evlauate actual crash test about side impacts happened most frequent accident cases. The purpose of this study is to confirm the necessity of actual crash evaluation and to verify fuel system safety through those tests. In addition, heavy duty vehicles not only need the actual vehicle crash evaluation but also the module systems of Compressed hydrogen storage systems because of the small-volume production of multiple types, relatively high test vehicle cost and various fuel install locations unlike passenger cars. Through this study, find the risk mechanisms such as fuel system leakage/damage according to side collisions, so the following results were derived. First, find the evaluation necessity according to the direct impact load as well as the inertia load from actual crash tests. Second, the intrusion of the vehicle stucture around the fuel systems is more effects than the impact acceleration in terms of actual crash test. Third, the dangerous situations of the fuel system like fuel leakage does not happen the direct contact with vehicle structure or ground but the fuel system breakage of the valves and connection pipes of the fuel system. This study results are expected to utilize the basic data for developing new side crash evaluation methods for heavy duty vehicle vehicles like buses and trucks equipped with high pressure vessels.
인정민(Jungmin In),전형석(Hyeongseok Jeon),이성기(Sungkee Lee) 한국정보기술학회 2016 한국정보기술학회논문지 Vol.14 No.4
Health information systems are required to apply international standards to achieve interoperability and standardized systems should be validated according to conformance statements. IHE MHD profile was developed to exchange health documents on mobile environments by standardized way. In this research, we developed the conformance test tools for each transaction of IHE MHD profile. To validate the actual request and response messages, the conformance test tools embed the actors of MHD profile. The tools parse, analyze and examine HTTP messages and MHD metadata, and display the results on web pages using JSP.
국내 바이오디젤의 연료 특성에 따른 배출가스, 연비 및 출력 영향도 조사
인정민(Jungmin In),김기호(Kiho Kim),박종배(Jongbae Park),송호영(Hoyeong Song),김재권(Jaigueon Kim),신성철(Seoungchul Shin) 한국트라이볼로지학회 2007 한국트라이볼로지학회 학술대회 Vol.2007 No.11
Air pollution has been faced with serious problem related to vehicle emissions. Bio-diesel is getting interest because of its low environmental impact when it used as alternative fuel for diesel engine. The purpose of this work was to investigate effect of vehicle emissions, fuel Economy and power on bio-diesel and ULSD(Ultra Low Sulfur Diesel). Blending ratio of bio-diesel were 20% (BD20) and the feedstocks were 5 types such as soybean, rapeseed, cottonseed, palm, wasted cooking oil. The emissions of bio-diesel generally were decreased compared to ULSD except NOx. This result shows that the decrease of Kinetic Viscosity, calorific value and density of the bio-diesel effect on vehicle emission and Fuel economy etc. When the fuels have the property of 2.9~3.0 cmt(Kinetic Viscosity), NOx was reduced and PM was increased. When the calorific value was decreased, the fuel economy was decreased. The decrease of fuel density makes PM and power lower.