• 한국도로학회논문집
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• 제14권4호
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• pp.113-124
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• 2012

PURPOSES : In This study two different concrete barrier systems have been proposed to be established at the small vehicle driveway. One is for median barrier, and the other is for roadside barrier. METHODS : In order to determine the suitable shape of barrier, the impact parameters including vehicle weight, impact angle, impact velocity and impact level have been analyzed. The real crash test has been carried out with 0.9 ton and 2.5 ton vehicles, respectively by using the 2m segment type concrete barriers connected by steel plates that are totally 40m barrier systems. RESULTS : The numerical results obtained by LS/DYNA-3D software are compared with real crash tests from the viewpoints of vehicle stability, vehicle trajectory, occupant risk, etc. CONCLUSIONS : From the above results, the dynamic performance of proposed barrier systems satisfies the specification of Korean Code for roadside safety structures.

• 자동차안전학회지
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• 제8권3호
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• pp.5-9
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• 2016

The objective of this study was to find the factors affecting the results of full frontal barrier impact test for the NCAP (New Car Assessment Program). To find the factors, the frontal NCAP test results of the NHTSA (National Highway Traffic Safety Administration) were utilized. The three tested vehicle were same model year. It was observed the second peak value of barrier force affected the occupant injury risk. As the second peak value of the barrier force increases, the injury risk of the driver side occupant increases as well.

• 한국기계가공학회지
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• 제15권1호
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• pp.61-67
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• 2016

The airbag is a widely accepted device for occupant protection in the automotive industry. As the injuries induced by airbag deployment have become a critical issue, revisions to Federal Motor Vehicle Safety Standard (FMVSS) 208 were required to create advanced airbags that can protect occupants of varying statures. In this paper, we developed a new low-risk deployment passenger airbag by adding the Passenger Protection Wrap (PPW). The PPW reduces the cushion impact force to the occupant in order to ensure pressure dispersion. A series of tests were conducted by using FMVSS 208 test procedures to demonstrate the proposed system. It was found that the system not only satisfied the injury criteria of FMVSS 208 but was also effective for protecting passengers of all sizes (male, small female, 3-year-old, 6-year-old).

• 대한의용생체공학회:의공학회지
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• 제24권1호
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• pp.15-21
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• 2003

본 연구에서는 경량휠체어 탑승자의 차량 전방충돌시 안전성 평가를 위하여 동적 슬래드 충격실험을 하였다. 실험은 총 6회 시행하였으며 충격속도는 20g/48 $\pm$2km/h 였고, Hybrid III 50%ile 성인남자 인체모형을 사용하여 두부손상기준(Head Injury Criteria), 목의 굴전모멘트, 축 인장력, 전단력, 흉부 가속도. 두부, 휠체어, 무릎의 전방 쏠림량을 측정하였으며 미국자동차학회 규격인 SAE J2249에서 제안한 동작기준 (Motion Criteria)과 미국 제너럴모터스사의 자체기준(GM-IARV)인 복합상해기준(Combined Injury Criteria)을 이용하여 안전성평가를 하였다. 실험결과는 경량 휠체어 탑승자의 전방 충돌 시 최대 상해치를 100%로 봤을 때 휠체어와 탑승자 거동의 위험도지수 MC는 52%, 탑승자의 상체 위험도지수 CIC는 60.1% 였다.

• 한국화재소방학회논문지
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• 제23권2호
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• pp.13-19
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• 2009

본 연구는 아트리움이 설치되는 호텔에 층간방화구획의 완화에 따른 아트리움 인접공간에 대한 재실자의 피난안전성을 컴퓨터 시뮬레이션을 통해 검증하고 그 결과에 따른 소방설비 계획에 대해 분석한 내용이다. 화재시나리오는 방화구획이 설치되지 않은 아트리움 하단에서 화재가 발생하여 인접한 호텔 객실 복도에 미치는 영향과 자동화재탐지설비의 구성에 따른 재실자의 화재반응 속도가 고려된 피난시간을 비교하여 연기에 대한 피난안전성을 평가하는 것으로 구성되었다. 본 연구의 주요 목적은 성능위주의 화재영향평가를 위해 화재 및 피난시뮬레이션을 수행하여 재실자에 대한 피난 안전성을 검증하고, 결과가 만족하지 못할 경우 이에 대한 추가적인 대책을 마련하여 화재 및 피난안전성을 확보하기 위한 대안을 제시하는데 있다.

• 한국자동차공학회논문집
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• 제21권5호
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• pp.136-144
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• 2013

An extensive real world in-depth crash accident data is needed to make a precise occupant injury risk prediction at crash accidents which might be a critical information from the scene of the accident in ACNS(Automatic Crash Notification System). However it is rather unfortunate that there is no such a domestic database unlike other leading countries. Therefore we propose a numerical method, i.e., crash simulation using a sled model to make a virtual database that can substitute car crash database in real world. The proposing crash injury risk prediction is validated against a limited domestic crash accident data.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2022년도 가을 학술논문 발표대회
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• pp.103-104
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• 2022

In Korea, the occurrence and risk of similar fires are high, so setting up fire prevention measures through fire case investigation is considered the most basic measure in securing human safety. In particular, calculation of evacuation capacity in evacuation safety design of buildings is the most important factor that directly affects evacuation safety performance. However domestic standards is not consider about occupant characteristics. also the case of domestic, it has the problem that the law is partially applied when the fire safety design of buildings. Therefore, the purpose of this study is to study the current status and related regulations of the life safety code for the application of high fire risk buildings, and to analyze the difference in evacuation time through Case Study.

• 한국도로학회논문집
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• 제10권1호
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• pp.123-134
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• 2008

국내에 설치되고 있는 가드레일의 단부처리시설(end treatments)은 차량의 관통이나 전복을 유발할 수 있는 형상을 하고 있어 사고 시 탑승자가치명상을 입을 가능성이 매우 높다. 실제로 차량이 가드레일의 단부에 충돌하였을 경우, 가드레일이 차량내부를 관통하여 탑승자에게 직접적인 상해를 입히는 경우가 발생되고 있다. 본 연구에서는 미국과 유럽의 성능평가기준(performance evaluation criteria)에 근거하여 국내 실정에 적합한 단부처리시설에 관한 성능평가기준(안)을 제시하였다. 또한 외국의 설치사례 및 연구사례를 조사하여 단부처리시설의 mechanism을 파악하고 국내 도로환경 에 적합한 단부처리시설을 제안하였다. LS-DYNA 프로그램을 이용한 컴퓨터 시뮬레이션을 통해 제안된 단부처 리시설에 대한 성능을 검증한 결과 성능평가기준(안)에 모두 만족한 결과를 보였으며, 개발 단부처리시설에 대한 실물차량 충돌시험을 수행한 결과 성능평가기준(안)의 탑승자 보호성능, 단부처리시설의 거동, 충돌 후 차량의 거동을 모두 만족하였다. 국내 최초로 탑승자의 안전을 고려하여 개발된 단부처리시설이 고속도로나 국도에 설치된다면 단부충돌사고의 심각성을 감소시켜 도로의 안전성을 향상시킬 수 있을 것으로 사료된다.

• 한국안전학회지
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• 제27권3호
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• pp.189-196
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• 2012

Fire is one of the greatest threats to historical buildings not only to the building's occupants but also to the building's structure and contents. The purpose of this research is to evaluate fire risk in historical buildings in Korea through a series of survey and review. In this research, a multicriteria decision-making approach involving Analytical Hierarchy Process has been designed to determine a weighted index to identify factors and quantify fire risk. Fire risk ranking systems of historical building has been developed in some applications, for example, BOCA, WISCONSIN, FSES and HFRI. According to the such derived fire risk indexing, the Human Activity index showed the highest risk, followed by Historic Buildings, Fire Safety Systems, and then Natural Environmental Causes. Comparison of these factors indicates that the derived risk values differ from case to case. It is proposed that a performance-based design approach should consider the building & occupant characteristics, locations and historical significance, resulting in a more accurate and effective evaluation of fire risk.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.513-516
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• 2008

The development of crash cushions is finally completed by full-scale vehicle crash tests. Since the current development of crash cushions is achieved by numerous repeated full-scale vehicle crash tests based on empirical and irrational methods, it requires a great amount of costs. In this research, the more rational procedure based on prototype design by static tests and computer simulation is suggested and it can minimize the number of full-scale vehicle crash tests.