• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2018.05a
• /
• pp.316-317
• /
• 2018

선박의 대형화, 고속화 및 선종의 다양화는 운송수단 중 해양 운송수단의 비중을 크게 증가시켰으나, 동시에 선박사고의 발생도 같이 증가되었다. 여객선의 경우 인명의 피해가 크게 발생하기 때문에 선박사고를 예방하기 위한 방법들이 논의되어 지고 있다. 본 연구에서는 여객선의 횡경사 각도를 바탕으로 전복의 위험까지 가게 되는 시간을 예측하여 위험시간에 도달하기 전에 인명을 대피할 수 있는 기초 자료를 제공하고자 하였다. 특정 시나리오를 설정하여, MOSES를 이용한 시뮬레이션을 수행하였으며 선형방정식을 이용하여 시뮬레이션 결과와 비교하였다.

• Journal of the Korean Society for Railway
• /
• v.15 no.6
• /
• pp.537-542
• /
• 2012

Rolling stocks are often subjected to the effects of natural strong wind or wind pressure caused by the crossing train. These wind pressure cause the falling-off in running stability and overturn safety. It is sometimes reported that trains are blown over by a gust of wind. So, many countries enact regulations to secure the overturn safety for wind speed. In this study, theoretical equations of overturn safety based on multi-body model are derived and analyzed the difference between the result of the solid model and that of multi-body model. In case of multi-body model, it is assumed that the degrees of freedom for carbody and bogie are assigned an independent values respectively. The results show that the latter approach based on multi-body model can access the overturn safety of train and replace the conventional method by using commercial software which is accessing with decrement of wheel load.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.11 no.11
• /
• pp.1025-1030
• /
• 2016

The big problem of accidents at sea is negligent watch, it causes collision, fender bender, stranding, rollover, and sinking of fishing vessel. Most accidents happens without an eyewitness, it is difficult to identify the cause of the accident. VDR(: Voyage Data Recorder) is needed to identify a cause of the accident, the VDR is not usually used for fishing vessel because of high cost. Thus, this paper designs and develops a VDR system for fishing vessel. If the system is used, cause of a sea accident can be quickly identified. Also, a VDR system can be used for appropriate measures to fix a cause of the accident. Finally, it also can be helpful to prevent maritime accidents.

• Journal of Chest Surgery
• /
• v.31 no.2
• /
• pp.182-185
• /
• 1998

Recently, The non-penetrating injury of bronchus has been increased, especially by traffic accident. Early diagnosis and primary repair of bronchial injury not only restore normal lung function but also avoid the difficulties and complications associated with delayed diagnosis and repair. This report describes about a case of total collapse and consolidation of left lung with the complete transection of nearly bifurcated portion of left main bronchus , lasted for 2weeks after traffic accident. This was diagnosed by fiberbronchoscopy and 3-D chest computed tomography(CT). She underwent the sleeve resection and end to end anastomosis, and postoperative PEEP for 2 days, suctioning twice by fiberbronchoscopy, continue postural drainge and physiotherapy were applied. She had almost full expansion of the left lung at discharge.

• Journal of the Korea Convergence Society
• /
• v.11 no.4
• /
• pp.173-177
• /
• 2020

In this study, the side doors of mid-size sedan vehicles of models A and B which are currently prone to rollover accidents are compared with each other by the structural analyses. As a result of the structural analysis, both models showed the maximum deformation at the point of overturning or impact load, and the model A of the two models was able to withstand greater impact load compared to the model B. In addition, the maximum stress happened at the door edge, and model B was 2.5 times more stressed than model A. In the accident of a crash, model A, which has the smaller maximum stress, is able to withstand greater impact loads than model B. Since model B has a larger deformation than model A, it is considered to be more dangerous than model A in the side impact accident. By applying the impact analysis of automotive side door by the class of vehicle, the study result at this paper is considered to be favorable as the convergent research material which can apply the aesthetic design.

• Journal of the Korean Professional Engineers Association
• /
• v.41 no.5
• /
• pp.41-44
• /
• 2008

Ships on the sea are exposed to the danger such as collision, stranding, sinking, capsizing and disaster and so on. So, we discuss the factors and the countermeasures for prevention a lot of marine casualty caused on the ship navigation. It is necessary to construct of cooperation system among all organizations relating to salvage on the sea. In order to prevent the marine casualty. it is important to reinforce the crew with safety education and to improve on navigation aids for ships in fairway.

• Journal of Fisheries and Marine Sciences Education
• /
• v.24 no.1
• /
• pp.1-8
• /
• 2012

In recent 5 years, the 70 percent of the ship's accident was occurred in the fishing vessels, and most of them were the engine troubles and collisions. The capsizing accident was comparatively low portion of occupation, which took only 2 percent, but the scale of accident and the loss of lives and property are known very tremendous. In this paper, it was examined for the stability provisions of fishing vessels in domestic and international to reduce the capsizing of them. Also, it was made an analysis for the case of capsizing accidents to suggest the measures against the capsizing.

• Journal of Auto-vehicle Safety Association
• /
• v.12 no.1
• /
• pp.39-45
• /
• 2020

The express/intercity bus models have been developing for wheelchair users to provide the preferable long-distance travels by the Korean government research. In the previous studies, evaluation method was set up for the wheelchair users' safety and the study for wheelchair occupants' safety was performed under various crash loadings mimic to real accidents, frontal crash, side impact and rollover, etc. This study was focused on the evaluation of occupant behaviors and injuries (head and chest) during vehicle impact loading cases in order to ensure the safety of wheelchair passengers in the bus. The occupant response and belt loading data during the sled FE simulation were compared with those of the sled test. The simulation results showed overall safety tolerances of wheelchair occupants under the severe frontal deceleration, side impact loading based on the FMVSS 214 configuration and bus rollover loading.

• Journal of Korea Ship Safrty Technology Authority
• /
• s.22
• /
• pp.19-33
• /
• 2007

According to amendments of ship safety act which comes into force from 4 Nov. 2007, the amended stability criteria should be applied to the small vessels of 12m or more in length. In this paper, the dimensions of domestic small vessels and the casualty reports of capsizing accidents are analyzed. And 58 ships are sampled, modeled for the investigation of the stability performance. Based on the regression analysis of the model ship's allowable metacentric-heights under several stability requirements, stability criteria for small fishing vessels and cargo ships are proposed.

• Journal of Auto-vehicle Safety Association
• /
• v.12 no.4
• /
• pp.54-60
• /
• 2020

In a previous study, an investigation of occupant behaviors and injuries (to the head and chest) was performed during vehicle impact loading cases in order to ensure the safety of wheelchair passengers on a bus. The computational results showed overall safety tolerances of wheelchair occupants under different accident configurations. The bus crashworthiness is described as the capability of a bus to protect occupants during rollover loadings. The residual space containing occupants should be undamaged without any intrusions. However it is necessary to evaluate the residual space according to the bus occupant kinematic analysis under the rollover crash simulation. This study focuses on the evaluation of occupant behaviors during rollover loading cases in order to ensure the safety of bus passengers sitting in general seats and wheelchairs and evaluates the residual space of the bus by analyzing the bus occupant kinematics.