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김규열 ( Gyu Yeol Kim ),배정한 ( Jeong Han Bae ),서영우 ( Young Woo Seo ),조홍래 ( Hong Rae Cho ),홍은석 ( Eun Seok Hong ) 대한외상학회 2003 大韓外傷學會誌 Vol.16 No.2
In addition to lap and shoulder belt, automotive airbag has reduced the frequency of fatalities and serious injuries from motor vehicle crash. Today, an increasing number of automobiles are being equipped with additional passive safety devices: driver and passenger airbags. With this increasingly frequent application of these safety features in automobiles, there are increasing number of reports about airbag-associated injuries including minor trauma on mainly head, face, eye, chest, and extremities. And also a little number of lethal injuries by airbag deployment were reported. That is even occurred at low velocity traffic collision. If the driver or passenger have his or her hand or arm across the steering wheel hub or torso move forward and contact with airbag module cover before airbag deployed especially if the lap-shoulder restrain is not worn, airbag deployment is then much more likely to cause serious injury even in the very low speed crash. In a review of literatures, the effectiveness of the passenger-side airbag and few data on passenger-side airbag related injury in the frontal crash doesn`t known in Korea, because most cars are equipped with only the driver`s side airbag and the low occupancy rate of the frontal passenger side airbag. This report describes three patients with severe injuries that were caused by airbag inflation during low velocity motor vehicle accidents. We should be aware of the explosive nature of airbag deployment and realize that the injury may be far greater than expected from a low energy motor vehicle accident.
박상근 한국자동차공학회 2022 한국 자동차공학회논문집 Vol.30 No.6
The airbag is an important safety performance part for reducing passenger injury in the event of a collision. The purpose of curtain airbags is to protect the heads of the occupants in the 1st and 2nd row seats during a side crash test. The ambient temperature shall be in accordance with the side crash regulation. However, vehicles are driven at different user environments, such as hot and cold temperatures. An automobile company set up an in-house test of airbag static deployment in order to meet user environment conditions of hot(85 oC) and cold(-30 oC). Simulation was used to verify the performance of current airbag static deployment, but the test results are different even with the same vehicle. In order to fix these issues, I focused on identifying the factors and tolerance in airbag-related parts that are affecting the difference between the simulation and the test. The purpose of this study is to understand the varying factors for curtain airbag and trim parts. A variation predicted model is built, and the upper/lower limits of variable combination are determined in order to achieve airbag deployment in position. A variation predicted model is composed of generated DOE table, NDF, and RSM. The NDF number corresponds to the airbag target deployment time. This result will serve as a design guide for future vehicle development.
자전거 탑승자용 웨어러블 에어백의 팽창성능 해석 및 시험에 관한 연구
김현식,변기식,백운경 한국안전학회 2019 한국안전학회지 Vol.34 No.2
Bikers can be subjected to accidents during their bicycling. Helmets are only good, if any, for their head protection. A wearable airbag can protect the human neck area if it is properly designed. This airbag system is composed of an inflater and an airbag. The inflater contains a pressurized gas cylinder and a piercing device. The airbag is an inflatable fabric surrounding the human neck. When a bicycle accident happens, a sensor captures the motion of the biker and a microcomputer sends a signal to open a valve in the inflator to supply the pressurized gas to the airbag. An important issue of this system is that the airbag should be quickly inflated to protect the human neck. This paper deals with the airbag inflation time simulation and some issues to design a wearable airbag system. Also, a prototype was tested to show its feasibility using a human dummy mounted on a running cart.
유완동(Wandong Yoo),함정식(JoungSik Ham),조규상(Kyuesang Cho),권태수(Taesu Gwon),정현승(Hyunseung Jung) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
This paper deals with the development and feasible study of the train to pedestrian protection airbag. The concept of the airbag system is to protect the pedestrian like as workers on railroad. The airbag system includes cushions, gas generators , a housing, sliding fixture, anti-bouncing airbag, and a leg protection bumper. Those things were designed and fabricated. The performance of the airbag system was evaluated in the sense of the static deployment test, drop test, dynamic motion test and field(train level) test. The deployment logic, TTF(Time to fire), and the inner pressure of the cushion were also investigated for the airbag.
한명석(MyoungSeok Han),이상준(SangJun Lee),박성종(SungJong Park) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Recent years, all passenger car and utility based on the driver seat of the car is equipped with air bags. In addition, passenger side airbag is fitted to reduce injury during a side collision and the tubular head protection airbags and curtain airbags are installed for side crash and rollover accidents. But according to the actual accident, the airbag did not working cases happened. In this study, gray zone of the airbags was analyzed for accident cases by project instruction . The possibility of airbag deployment were presented with the size of each region through crash type and collision rate. And the based on this information, the behaviors of the airbag was expressed more detail.
MADYMO Gas Flow 방법론을 이용한 뒷좌석 측면 에어백의 Vent Position에 따른 SID-IIs 상해치 개선에 관한 연구
한표경(Pyokyoung Han),이현섭(Hyunseop Lee),최현진(Hyunjin Choi),이만수(Mansu Lee) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
When analyzing occupant behavior about the lateral crash using MADYMO, a side airbag has become an important factor to improve accuracy compared with test data. There are two methodologies to simulate side airbag in the MADYMO. The first step is the UP methodology to be assumed the unique condition regarding internal gas flow of side airbag. The merits of the UP are fast modeling, short run time and effective deployment. The second step is the GF methodology to be assumed variable condition as volume variation regarding internal gas flow of side airbag. The GF can describe a few more real physical deployment of side airbag than UP. The UP is universally used to save time in occupant behavior analysis. However, the UP cannot certify to difference of dummy injury as variation of side airbag vent position because of supposing unique condition regarding internal gas flow of side airbag. Therefore, the GF is more effective than UP in the view of vent position analysis. This study shows SID-IIs injury improvement as vent position variation of rear side airbag through the GF under the USNCAP lateral MDB crash mode.
D. E. KIM,Y. H. JOO,강명창 한국자동차공학회 2016 International journal of automotive technology Vol.17 No.4
Motor vehicle passenger airbags have been proven to be effective for reducing the possibility of passenger injury during a crash. However, the inflation of the airbag sometimes causes serious injury when a passenger is positioned close to the airbag. The United States Federal Motor Vehicle Safety Standard (FMVSS) 208 requires the use of a low-riskdeployment (LRD) passenger airbag system. This paper proposes a newly developed airbag system comprising two slim airbags mounted on the instrument panel. A series of tests were conducted using the FMVSS 208 test procedures to demonstrate the effectiveness of 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.
김병우(Byeong Woo Kim),허진(Jin Hur) Korean Society for Precision Engineering 2011 한국정밀공학회지 Vol.28 No.10
For side airbag, the pipe type inflators have been wide used while the disk type inflators have been used for front airbag. For helping to prevent injury and death the airbag inflator system should be design with great care. The present study deal with optimizing the design of side airbag inflator by finite element analysis and design of experiment method. An optimization process was integrated to determine the optimum design variable values related to the side airbag inflator. Free shape optimization method has been carried out to find a optimal shape on an side airbag inflator model. Optimization of the air bag inflator was successfully developed using Sharpe optimization was carried out to find a new geometry. The improved results compared to the base design specification were achieved from design of experiment and optimization.
유완동(Wandong Yoo),함정식(Joungsik Ham),권태수(Taesu Gwon),정현승(HyunSeung Jung) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
This paper deals with the development and feasible study of the train to pedestrian protection airbag. The concept of the airbag is to protect the pedestrian like as workers on railroad. The airbag, which includes cushions, gas generators , a housing, and a leg protection bumper, was designed and fabricated. The performance of the airbag was evaluated in the sense of the static deployment test, dynamic drop test, and train level test. The TTF(Time to fire) and the inner pressure of the cushion were also investigated for the airbag.
유완동(Wandong Yoo),함정식(JoungSik Ham),조규상(Kyuesang Cho) 한국자동차공학회 2012 한국 자동차공학회논문집 Vol.20 No.4
This paper deals with the development and feasible study of the train to pedestrian protection airbag. The concept of the airbag system is to protect the pedestrian like as workers on railroad. The airbag system includes cushions, gas generators, a housing, sliding fixture, anti-bouncing airbag, and a leg protection bumper. Those things were designed and fabricated. The performance of the airbag system was evaluated in the sense of the static deployment test, drop test, dynamic motion test and field(train level) test. The deployment logic, TTF(Time to fire), and the inner pressure of the cushion were also investigated for the airbag.