Combustion fake people's test principles

In fire rescue, industrial production, military battlefields, people may suddenly encounter burning fires, need to wear flame retardant heat shields to avoid people with all kinds of hot injuries 1. Extremely excellent thermal protective clothing, not only better strengthen the thermal protection of the human body, but also contribute to the work of the player, high-efficiency, and open the rescue work 2. At present, all countries around the world attach great importance to the research of flame retardant heat-resistant equipment, and research on test methods and standards is the basis for high-performance thermal protection clothing and equipment research 3.
In clothing thermal protection performance evaluation, although the commonly used small-scale fabric test method can evaluate the thermal protection performance of fabrics, many scholars believe that the effectiveness of protective clothing is not only depends on the performance of each surface, but should also rely on clothing. Crop, design, and other additional features.
Therefore, the testing of protective clothing performance cannot only be tested on local performance of fabrics, and the overall performance of clothing is also required to test and evaluate 4 - 5. The combustion fake people play an important role in the overall thermal protection performance test of the inventory. Literature 6 pointed out that although the combustion dummy system is complex, precise and expensive, there are many advantages and useful features. The most prominent feature is fast, accurate, standardized, and can repeat the entire human heat exchange. Document 7 pointed out that TPP test and burning fake people testing although two different test methods, the data derived from these two methods has strong correlation to reflect the protection of clothing. Due to the complexity of the combustion dummy system, there are few institutions with burning fake people outside China, and the relevant literature is not very common. In this paper, the research principle, development history and status quo, China's foreign research institutions and scholars use the research of combustion fake people, and predict the application prospects of combustion fake people, in order to use combustion fake people. Reference is provided for protective clothing function design.

The principle of testing of the combustion fake
The combustion dummy system is composed of a combustion dummy body and a combustion environment simulation laboratory. By automatically controlling the flame distribution and thermal flow size, simulating the fire in the combustion environment simulation laboratory, using the combustion dummy wears the test clothing, reproduce the combustion process of the human body, and the objective quantitative evaluation of the overall thermal protection performance, Predict the degree of protection of clothing to the human body under sudden fire conditions. The burning dummy system is a non-constant mixed system. It has comprehensively uses biomatic thermal analysis techniques, material modification techniques, human machine engineering manufacturing technology, transmission technologies, combustion engine and self-control.Systematic technology, etc.
The process of evaluating the burning dummy is evaluated in the combustion dummy system, and the fake human surface skin block is divided into 100 parts, and the sensor is installed on each. During the combustion, the burner is sprayed to the dummy, and the heat flow is passed through the garment and the air layer to the dummy surface, the temperature sensor collects the temperature, converting these temperature information into corresponding hotflow information, and utilizes the skin biothermatic heat transfer model. Such as Pennes Model 9, the biothermatic transmission heat wave model (TWMBT) 10, etc., the skin base layer and the leather bottom layer can be obtained throughout the combustion process including the temperature change information within a certain period of time after the fire is completed, according to Henriques burns Integral model 11, judge the burning of the skin. The data determined by the dummy surface represents the thermodynamic state of the skin block. It is only necessary to solve each skin block, and evaluate the burns of the fake person, to reflect the overall thermal protection of clothing. performance.

Burning fake people

u003e