Study Of Explosion Temperature Measurement By Multi-spectrum Method

The measurement of explosion field temperature is an important aspect of the study on explosion heat radiation damage. At present, the most widely applied method of field temperature measurement is radiation thermometry. It has a large error because the hot gas in the explosion process is considered as black body or gray body. The high temperature measurement method based on the theory of atomic spectroscopy, that is multi-spectrum average method and multi-spectrum slope method, has great significance.In the study of temperature measurement, the devices with multi-spectrum were proved to be able to improve accurcy by increasing the number of spectrum line from four to eight. Through the improvement of data processing software, parameter was optimized, noise was eliminated. In explosion field tests of various high-energy explosives and TNT, the transient high-temperatures were measured with this system. As shown by the results of average methods, transient high-temperature value and fireball duration of the same explosives were basically same as each other. The temperature comparison of different quality high-energy explosives was also in line with the law. Temperature results by slope method shows good repetability. Through some research such as fireball model and heat radiation damage criteria, heat radiation damage effect was analysed. Temperature measurement results were applied to analyse human heat radiation injury, and heat injury radius for a certain amount explosive was obtained. The experimental and analysing results showed that: The atomic multi-spectrum temperature measurement method in the paper was suitable for the transient measurement of explosion fireball temperatures.