Abstract:In this study, a combustion experiment of the monitor, body, desk, chair and electric blanket used in daily life was carried out using the oxygen consumption rate principle-based Room Corner Tester(RCT), in order to provide practical data about heat release rates and smoke release rates of daily supplies. As the result, the computer monitor's maximum heat release rate was 166.28 kW/m 2 . This is the relatively highest heat release rate among the five daily supplies and 20.55 times bigger than the body. This was followed by the chair, electric blanket, desk and computer body. The computer monitor showed the highest total heat release rate at 52.5 kW/m

In this paper, numerical analysis was performed about whether the flash fire of loaded shells breaks out in the virtual combat vehicle according to sorts of the kinetic energy ammunition as the preceding research for vulnerability analysis inside the combat system by an external threaty ammunition. In this simulation, Autodyn program was used and the Lee-Tarver ignition and growth model was used to determine the flash fire outbreak. In this study, the kinetic energy ammunition was set of type A and type B in two kinds and the loaded shells was set of COMPB, TNT, PBX9404 and ANB. As a result, TNT and PBX9404 have much higher flash fire probability than COMPB in high explosive, ANB has very low flash fire probability.

In this study, we investigated the combustion characteristics of the interior flooring materials to provide the basic data on the identification of fire. The ignitibility, fire spread, and product of combustion were analyzed for three kinds of flooring materials(reinforcement, plywood, hardwood) and two kinds of common linoleum(PET mat, monorium mat). As a result, common linoleum ignited in less time than flooring materials and the fire risk appeared relatively higher. The flooring materials was slower to ignite but, once it set fire, the maximum heat release rate was generally higher and the fire size was typically higher than those common linoleum. In addition, the time to reach the maximum heat release rate was proportional to the ignition time at all floors. The amount of smoke release was relatively larger on flooring materials than on common linoleum, and the extinction coefficient of flooring materials and common linoleum depending on the volume of smoke release ranged at 0.8~5.3. Toxicity index was relatively higher at flooring materials than common linoleum, and among common linoleum, monorium mat had a toxicity index of 7.8, which was at the highest level. Therefore, the result shows that in case of fire, flooring materials will have relatively larger fire scale but relatively lower fire risk than common linoleum, and common linoleum will have higher risk of casualties due to toxic gases.

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