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우종운(Jongwoon Woo),김명일(Myungil Kim),이선봉(Seonbong Lee) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Recent developments in the automotive industry have aimed at better driving safety, traffic efficiency, and providing information to vehicle users. Many safety systems have been launched in the market several years ago. Therefore, it is important to evaluate the vehicle safety system. First of all, this paper describes in detail the concept of the test-bed. This test-bed is carefully designed to meet the requirements of ISO/TC204. This test-bed will be used to conduct testing on various intelligent control systems, such as adaptive cruise control system, lane departure warning system, cooperative intersection warning system as well as ABS and electronic stability control system, etc.
우종운(Jongwoon Woo),김명일(Myungil Kim),이선봉(Seonbong Lee) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Active safety functions such as Autonomous Emergency Braking System(AEB) and Forward Collision Warning (FCW) have been introduced in road vehicles. The purpose is to try avoiding potential car accidents through active support to the driver. Therefore, it is important to evaluate the vehicle safety system. This paper presents an assessment method that involve a frontal collision. The aim of this paper is to present both an assesment method and unmanned target vehicle. To test the AEB and FCW systems different accident scenarios has to be simulated with a test vehicle approaching a slower vehicle dummy (so-called soft target). The employed unmanned soft target is designed to minimize the potential for damage, which is modeled by its appearance and its radar or lidar characteristics according to a real vehicle rear.
불화수소 누출사고 비교를 통한 하역작업장의 안전성 향상방안에 관한 연구
우종운(Jongwoon Woo),신창섭(Changsub Shin) 한국가스학회 2018 한국가스학회지 Vol.22 No.4
본 연구는 불화 수소 탱크 컨테이너 하역장에서 불화수소 누출 시 누출량 및 확산 정도를 정량적으로 평가하여 동종사고의 재발을 방지하고 안전성 향상방안을 제시하는데 목적이 있다. 2012년 H사에서는 최대 저장량이 18 Ton인 탱크컨테이너에서 누출사고가 발생하여 인근 지역으로 8 Ton이 누출되었고, 그로인해 사회적 이슈가 되었다. 가우시안 플럼(Gaussian plume) 모델을 이용하여 계산한 결과 누출지점으로부터 반경 1,321m까지의 농도가 20ppm 이상으로 예측되었다. 2014년 R사에서 발생한 불화수소 누출사고에서는 누출량이 11.02kg으로 추정되었고, 그 중 2.9㎏이 세정기로 회수되었다. 가우시안 플럼 모델을 사용하여 계산 한 결과, 누출 원으로부터 20ppm 이상의 농도를 갖는 피해 범위가 반경 69m로 예상되었다. 위의 두 가지 사고를 비교 한 결과, 누출량은 약 987배 차이가 발생했고, 피해 지역은 19 배 이상 차이가 나는것으로 나타났다. 따라서 보호구의 착용, 하역 장소의 밀폐 및 세정기 설치, 그리고 비상훈련을 실시하여 하역장에서 불화수소가 대량으로 누출되는 사고가 발생하지 않도록 관리해야 한다는 결론을 얻었다. The purpose of this study is to assess quantitatively the amount of leaks and the extent of dispersion in case of a leak at a hydrogen fluoride tank container unloading station, and to suggest a safety improvement plan to prevent recurrence of similar accidents. In 2012, Company H leaks 8 tonnes of tank containers with a maximum storage capacity of 18 Ton, causing it to become a social issue. As a result of calculation using Gaussian plume model, the concentration was estimated to be more than 20ppm from the leak point to 1,321 m radius. The leakage of hydrogen fluoride from the company R in 2014 was estimated to be 11.02 ㎏, of which 2.9 ㎏ was treated by the scrubber. As a result of calculation using Gaussian plum model, the damage range with a concentration of 20ppm or more from the leak source was estimated to be 69 m in radius. As a result of comparing the above two accidents, it was found that the leakage amount was about 987 times different and the damaged site was more than 19 times different. Therefore, it was concluded that it was necessary to control the wearing of the protective equipment, the enclosure of the unloading site, the installation of the scrubber, and the emergency training to avoid the accidental leakage of a hydrogen fluoride from the unloading site.
우종운(Jongwoon Woo),한인수(Insu Han),이선봉(Seonbong Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Because of the rapid development of the vehicle industry, cost reduction and short-term of product development time have key subjects. To reduce the time scale and overall cost of product development, proving ground based, it is essential to carry out the accelerated durability testing. One of the methods achieving these objectives is estimated durability analysis and testing based on fatigue theory. This paper describes the work that was measured road load data from the proving ground. All the data measured from this experiment are recorded as strain tim histories. Hence, we can find damage factors which give effects on the fatigue life of bellows.