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태순호,이병곤 한국산업안전학회 1990 한국안전학회지 Vol.5 No.3
This study describes the engineering approach adopted to investigate sprinkler head during the early stage of a fire when they are subjected to convective heating and low gas velocities. Comparions are made between the parameters derived using basic methods, ie. ramp test, for evaluating sprinkler parameters(time constant, response time index) is illustrated. Evidence is presented that the propotion of heat loss by conduction from a sprinkler element may very typically employed in the rate of rise test. This fact alone may justfy the precautionary need to perform a limited number of rate of rise tests to confirm a sprinklers capacity to function correctly in reasonably unfavourable yet realistic conditions. The work is aimed primarily at meeting the needs of sprinkler industry.
태순호,이병곤 社團法人 韓國火災 ·消防學會 1998 한국화재소방학회논문지 Vol.12 No.4
고온에 노출된 콘크리트 미세조직의 변화가 강도에 미치는 영향을 규명하기 위하여 현재 건설현장에서 가장 많이 이용하고 있는 배합비와 쇄석으로 시험체를 제작하여 고온에 노출시킨 후 SEM/EDX, XRD 및 DSC-TG로 분석하여 각 온도별로 강도와 미세조직 특성을 분석하였다. Very often, whether accidentally or intentionally set fire, according as building are elevated, varied or complicated day by day. It is of primary importance that we have a treatment of fire damaged structure. In general, strength and elasticity modulus of heated concrete are reduced. Product background of cement, sand and coarse aggregate differ from country to country, so that thermal behaviour of concrete make a difference in high temperature. To cope with demand, this paper is a study on relation to microstructure and strength reduction. In consequence of experiments, concrete exposed to high temperature are estimating the reduction of mechanical properties in comparison with microstructure characteristics which are abtained from the SEM/EDX, XRD and DSC-TG analysis of heated specimens under various temperature.
태순호,김용수 한국산업안전학회 2002 한국안전학회지 Vol.17 No.4
To reduce the nation from facing increasing industrial disasters following the grave foreign exchange crisis in 1997, this thesis compared inside with outside of the current country safety manager system, presented way about introduction to comprehensive safety management measure.
李謹悟,太淳鎬 서울産業大學校 1991 논문집 Vol.34 No.1
One of the most important factors of sprinkler head is the heat response of sprinkler head and the proper operation in the early stage of fires. A failure or a improper operation can cause a great loss of life and property. Sprinkler head is subjected to convective heating from the hot gas and conductive loss to frame. In this study, the general solution of heat balance equation including conductive heat loss, were suggested and were determined the constants with the results of experiment in hot wind tunnel in order to derive the general equation for the response time and to investigate the response time index which represent the characteristics of response of sprinkler head in actual fires. Two types of test were considered, the plunge test, in which the air temperature is represented by a step function, and the ramp test, in which the air temperature increases at a constant rate. As a result, simple equations were derived, which can be predicted the response time for the ramp type fire with the rate of temperature rise and gas velocity, for the plunge type fire with temperature and gas velocity. Also other useful data, such as the effective temperature, time constant, response time index, conduction parameter, were obtained. It was confirmed that the direction of deflector and frame to gas flow are given very significant effect to the heat transfer with their shielding effect.
비정상 열전도 방정식의 수치 해석을 이용한 화재 건물의 안전성 평가
태순호,이병곤 (社團法人)韓國火災·消防學會 1997 한국화재소방학회논문지 Vol.11 No.2
화재 모델에서 구한 가스층의 온도를 이용하여 비정상 열전도 방정식의 수치해석을 하면 유한 제어체적을 계산할 수 있으며 가열 온도와 저감율로 열에 의한 압축 및 휨 강도의 저하값을 계산할 수 있다. 또한 이 방법을 이용하여 콘크리트 구조물(기둥, 보등)의 안전성 평가에 잘 적용할 수 있었다. Numerical simulation of unsteady heat conduction equation were carried out by finite control volume method using the gas temperature derived from fire model as a boundary value. The reduction of compressive and flexural by heating were calculated from the temperature and the given reduction rate. It is shown that this method could be well applied to assess the safety of concrete column or beam of the burned building.
이근오,태순호,김일종 서울産業大學校 1993 논문집 Vol.38 No.1
In the event of fire in a compartment the time available for occupants to evacuate the compartment safely, the Available Safe Egress Time (ASET), depends on the time of fire detection and on the time of the onset of hazardous conditions. The purpose of this study is to provide an analytical basis and experimental data for estimating the fire growth in compartments and the available safe egress time. The paper used the purposed equations that about mass loss rates, smoke layer height, temperature rise of hot gases in a compartment, ventilation flow rate, and flame height. As a result, the more fire load were increased, the more mass loss rate, smoke layer height, smoke layer temperature rise, ventilation flow rate, and flame height were enlarged, however available safe egress time were suddenly shorted.
이병곤,태순호 한국산업안전학회 1997 한국안전학회지 Vol.12 No.3
For many years concrete has been the major building material for most construction. It is of primary importance that fire fighters or fire investigators have a full understanding of the properties of concrete so that better control of the fire scene is achieved. This, in turn, not only help to ensure a safer fire-fighting job but also a more successful fire investigation. So far as the fire scene investigation in concerned, knowledge about the thermal behaviour of concrete can help the investigators to determine the highest temperature that a particular spot of a fire scene has ever reached thereby providing data which may be of value in reconstructing the course of the fire.