Burning dummy system experiment process and requirements

Combustion Dumsystem:

The study is used in the "Donghua Fire" of Donghua University Combustion Doors. 7. The dummy's surface is evenly distributed 135 high temperature 60 sensors, and the joints of each site can be active, and there is a variety of dressing postures of the human body, and there is also a dynamic simulation function 8. In the combustion simulation laboratory, 6 groups of 6 groups were distributed around 6 groups, and the flashfield simulation was performed. By analyzing the data transmitted by the fake human body in the flashfire experiment, the heat flow is transmitted, predict the burn level, burn area of the skin surface, the total area of the burn and III, and generate III and III. 8-9 . Infrared thermal imager

The temperature of the temperature in absolute zero is form a certain temperature field in the surface 10. The infrared thermal imagery can sensitive infrared radiation of the surface of the object and accurately measure the temperature of the surface of the material 10-11. This study uses the Mikron M7604F / M7604G dual-band infrared thermal imagery to determine the change in temperature in the surface of the clothing in the experiment of the combustion priest. At the same time, the infrared image, data, etc., which are photographed by the thermal imager, multi-angle analysis.


Test fabric The fabric used in thermal protection experiments is a flame retardant antiferricum outer fabric, from 93%. Aramid 1313, 5% aramid 1414 and 2% P-140 conductive carbon fiber blended, has stable flame retardant properties, wear resistance and antistatic properties 1-2. Experiments use three different grams of fabric production hot protective clothing, and the basic parameters are shown in Table 1.
garment sample

10 sets of experimental classification of clothing, fabrics and size code, wherein the clothing A, B, C latitudinal scale number represents increasing order of 80 inches, specific details of clothing size as shown in table 3.
In this experiment 10 sets heat protective clothing garment as experimental samples. Clothing binding experiment design and implementation of experimental conditions shown in Table 4 tissues. Experiments carried out with reference to the relevant requirements ISO13506-2008 embodiment

Test Method

This experiment is observed using infrared camera Clothing the surface temperature of the combustion system of the surface temperature of the dummy human acquisition analysis.

fixed infrared camera prior to combustion, and the combustion dummy dressed after exposure to a flash fire environment, the temperature and the thermal imaging system records dummy garment surface and the dummy surface changes. Thermal imager shooting dummy front part. Heat for selection area 105 of FIG like temperature, the selected location area corresponding to the combustion dummy sensor, the front dummy select total35 temperature zones. Test results were discussed in the experiment

Using the thermal imager and the combustion dummy system to record data. The front part of the combustion dummy is divided into three parts: arms, torso, and legs, and discussions from these three parts.

When the combustion experiment ends the cost of the garment leaves after the flame, the surface temperature of the apparel is still in a high temperature state ( gt; 100oc, especially the limbs); the initial cooling is very obvious after the flash is completed, then gradually Macked until it reaches room temperature. From Fig. 4, the temperature of the dummy is raised at a speed 125 of about 0.5oC / s within a few seconds after the end of the combustion, and peaks around 10 seconds; it can also be found that the temperature after the temperature is up to the peak. The decline is slow. This means that hot protective clothing can block the direct burning of the flame when the flame is on, and acts as a heat insulation. Also, due to its thermal insulation performance, clothing has a significant obstacles to the heat dissipation of the human body after the end of the flashfire.

Based on the combustion dummy system based on the combustion dummy system, the fireproof experimental garment was used to test the surface temperature of the fake people, and the following conclusions were obtained: (1) The temperature of the clothing surface maintains a high temperature after the end of the burning. Moreover, the high temperature of the clothing surface will be transmitted to the human body through the fabric, and the surface temperature of the human body is increased at a rate of about 0.5 ° C / s in 10 seconds. 205
(2) Clothing and the surface temperature of the human body will vary due to the change of flash burning time, costume size, fabric gram and posture
. The heat storage and heat dissipation efficiency of the garment system are also changed due to these factors.
(3) After the end of the flashfire combustion experiment, the average rise rate α (OC / S) between the maximum value is reached between the maximum, and the surface temperature of the measured clothing is below 33 Oc. (OC / S) reflects the temperature change of the laminar fire experiment with the installer. The heat dissipation efficiency index γ can synthesize the heat dissipation effect of the system, and in a certain extent, 210 reflect the heat storage condition.

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