Walter Sweating Fabric Manikin can test the detailed data system. The dummy itself does not have fingers and faces. The dummy has higher strength. Nearly 700m of pure nickel wire is placed inside the dummy from the fingers to the nasal cavity. Smart circuits ensure the accuracy of the measurement process. The only circuit inside each part ensures the accuracy of the measurement, and the built-in heat conduction system can ensure good uniformity. At the same time, the dummy can be divided into two parts, which is easy to transport.
In a fire-hazardous environment, people need to wear thermal protective clothing to avoid flame injuries. Thermal protective clothing is widely used to protect firefighters, steel workers and other personnel working in high-temperature hazardous locations. With the increase of clothing exposure time in the flame, the surface temperature of the clothing will gradually increase due to the direct burning of the flame, and a large amount of heat transfer causes the air layer under the clothing and the surface temperature of the human body to increase at the same time. Under the fire of the clothing, not only the thermophysical properties of the fabric itself will change and affect its thermal protection performance, but also after leaving the flash fire environment, the surface temperature of the clothing will still remain in a high range, and it will be different from the clothing under the clothing. And the temperature of the surface of the human body forms a temperature difference, and the continuous heat transfer causes the surface temperature of the human body to continue to rise. Studies have shown that burns may occur after a flash fire, and the energy stored in the fabric is also an important factor in predicting burns. Therefore, even if the thermal protective clothing can resist the burning of the flame for a short time, the clothing can still cause burns during the cooling process. Therefore, it is particularly important to study the temperature changes of clothing and human body after burning.
The research on multi-layer protective clothing using Walter Sweating Fabric Manikin shows that the outermost fabric has an important influence on the protective performance of multi-layer protective clothing. Experiments were carried out with TPP equipment, and it was found that long-term low heat flux heat source exposure was more likely to cause burns than short-term intense burning. In the actual wearing process, the thermal protection performance of clothing not only depends on the performance of the fabric itself, but also needs to be comprehensively considered from the aspects of clothing style design, specifications and dressing posture. In order to simulate the situation of the human body in the actual fire field as realistically as possible and to measure the surface temperature of the clothing and the human body safely and accurately, the test method of the burning dummy has shown advantages and has been widely used in the field of thermal protection.
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