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US NCAP 조수석 목 거동 분석을 위한 평가 방법에 관한 연구
장래익(Raeick Jang),이동형(Dong Hyeong Lee),이재현(Jae Hyun Lee) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
NHTSA has carried out a lot of New US NCAP test became effective from MY2011. Injury probability of New US NCAP test is more severe than previous NCAP test. The Hybrid Ⅲ 5<SUP>th</SUP> %ile dummy in front passenger position is used instead of 50<SUP>th</SUP> %ile dummy. 5<SUP>th</SUP> %ile dummy gets lower points than 50<SUP>th</SUP> %ile dummy in most tests. One of the main cause is Nij. Especially neck extension moment value is main factor to improve Nij. US NCAP frontal test data was review to know tendency of neck extension moment value. The object of the study is to find out how extension moment occur and what is the correlationship with other sensor. Furthermore, sled test is conducted to analyze extension moment based on analysis result.
New USNCAP 전방 조수석 승객의 안전도 개선을 위한 해석적 연구
이해성(Haeseong Lee),임종현(Jonghyun Yim),김동석(Dongseok Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
For model year (MY) 2010, the United States Department of Transportation's (USDOT) National Highway Traffic Safety Administration (NHTSA) will make changes to its existing U.S. New Car Assessment Program (USNCAP). For the frontal crash test program, NHTSA will maintain the 56 kph full frontal barrier test protocol but will update the test dummies and associated injury criteria used to assess and assign a vehicle's frontal impact star rating. The Hybrid III 5th %ile female dummy will be used in the right front passenger position, the body regions and injury criteria will be changed to head (HIC15), neck (Nij, tension, and compression), chest (deflection), and femur (axial force). The risk of injury for Nij=0 is 3.8 %, so that this injury should be given more weight. To achieve lower risk of neck injury, the movement of pelvis, torso, and head have to be balanced. Furthermore improvement of the chest deflection is essential. For the 5th %ile female dummy in the passenger side is more sensitive than 50th %ile dummy. Through combination of other restraint systems such as airbag, load limiter and pretensioner of seat belt, neck injury has improved.
Experimental Study on Neck Injury in Low Speed Frontal and Rear-End Collisions
Kim, Gyu-Hyun,Lee, Ouk-Sub,Hwang, Si-Won The Korean Society of Mechanical Engineers 2000 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.14 No.11
Motor vehicle accidents in rear impacts cause more than fifty percents of drivers to suffer from neck injuries. It is known that most neck injuries are associated with rear-end collisions at a speed lower than 32 km/h and between the Abbreviated Injury Scale (AIS) 1 and AIS 2. Two different types of low speed crash tests such as the frontal barrier and rear moving barrier crashes have been conducted by following the procedure of the Research Committee for Automobile Repairs (RCAR). The injury for the neck and the Head Injury Criteria (HIC) were measured by using the sensors mounted on dummies. We reviewed neck injures and the relationship between the neck and head injuries, and examined the deceleration of the body. Using the experimental test data at the neck, we investigated an improved neck injury criterion Nij. Also, the effects of the position of a head restraint on reducing the frequency and severity of the neck injury in rear-end collisions were investigated.
정원영,윤이나,박준호,김주혜,임대영,유의상,Jeong, Won-Young,Yoon, Yi-Na,Park, Jun-Ho,Kim, Ju-Hea,Lim, Dae-Young,Yoo, Eui-Sang 한국섬유공학회 2011 한국섬유공학회지 Vol.48 No.4
Multi-layered woven fabrics are widely used in soft body armor to provide ballistic resistance. In this study, we suggest a method to increase the energy absorption by narrow fabric effect. Five kinds of ballistic panel were prepared by cutting, slitting, and so on. The width of the strips was determined based on the size of the induced trauma (back face signature on oil clay); they were stacked at either bias or warp directions. The ballistic performance (NIJ Standard-0101.04, Type IIIA) of narrow fabrics was compared to that of wide fabric panels. Lab-scale dropping projectile and NIJ Standard tests showed that the penetration depth of the trauma was less in narrow fabrics than in wide plain fabrics. The width of the trauma was also considerably smaller than the control. It is caused by free edge effect of relatively narrow strips of woven fabrics.
A Prototype Measuring Set for Capturing Dissipated Force on Soft Armor
C. Suppitaksakul,N. Chalermklin,S. Parsapratet,S. Sungnu 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10
This paper presents a prototype of dissipated force measuring set for testing of soft armor in Thailand. The measuring set consists of (i) The impact absorber (ii) Transducers which were specially designed using two air cylinders, modified air pressure switch and Hall Effect sensor (iii) the Data Acquisition (DAQ) and (iv) the processing part (computer). The impact force is converted into analog voltage by the force transducers using Hall Effect sensors then passed to the Data Acquisition (DAQ). DAQ is controlled and processed by LabView program in order to collect and record the impact force data. The data is plotted in two and three dimension shapes for impact visualization. The obtained results from the measuring set are compared to the traditional testing method according to NIJ standard 0101.04 using Roma Plastilina No.1 clay. The experiments were carried on to capture the impact force from the shooting test. The satisfactory results are given and reported.
전준호(Jun, Joon-Ho),허용정(Huh Yong-Jeong) 한국산학기술학회 2006 한국산학기술학회 학술대회 Vol.- No.-
본 논문에서는 자동차후면추돌이나 에어백시험 등에서 인체모형의 중요한 평가지수인 목 상해를 평가 할 수 있는 평가시스템에 대하여 연구하였다. 목 상해(Nij) 기준만족여부를 판단하기 위하여 Diadem 프로그램을 이용하여 더미(Dummy)의 종류별, 시험의 조건별로 자동으로 계산되는 평가시스템을 개발하여 목 상해 기준을 보다 편리하고 정확하게 계산 할 수 있도록 하였다.
컴퓨터 시뮬레이션 기법을 이용한 고속전철 승객안전도 해석 및 평가
윤영한,구정서,이재완 한국철도학회 2003 한국철도학회논문집 Vol.6 No.1
The computer simulation techniques were adopted to evaluate the effects of seating positions of passenger under various accident scenarios. The baseline of computer simulation model was tuned by the sled impact tests which conducted under the upright and standard seating positions. This study shows the effect of relative velocity between occupant and struck vehicle while occupant is impacted to a front seat´s seatback. Although, base on the current accident scenarios, The KHST is performed well enough to protect average adult male occupants. However, Results from the tests indicate small size occupant or higher impact speed may cause sever neck and femur injuries.
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.
심보성(Shim, Bo-Sung),허용정(Huh Yong-Jeong) 한국산학기술학회 2006 한국산학기술학회 학술대회 Vol.- No.-
본 논문은 본인이 근무하는 회사(H사)에서 해외 ERP프로그램을 도입하는 과정 및 구축을 실시하면서 겪었던 일과 구축 후 앞으로 개선해야 할 방향에 대해 ERP 구축했던 실무 담당자로서의 견해를 논문화하여, 개선방향을 제시하였다.
Preliminary experimental results for neck injury in mobile robot-human constrained-collision
SooYong Yun,Jong-Hyeok Park,Ho-Yeon Kim,Kwan-Woong Gwak 제어로봇시스템학회 2016 제어로봇시스템학회 국제학술대회 논문집 Vol.2016 No.10
Following the increased use of mobile robots in the field, the injury problem caused by the collision between human and the mobile robot has become an issue of growing importance in the society. Neck injury is considered as one of the major injury mode in collision-induced injury. Hence in this paper, AIS of the neck injury was predicted using the index of neck injury on collision through the mobile robot-dummy collision tests.