| For the damage assessment of fuel air explosive (FAE), firstly measurement systems were built to measure the blast field parameters of FAE. Secondly, by combined with damage theory, the damage effect of shock wave, fragment, thermal radiation and suffocation were analyzed respectively. Then, two kinds of comprehensive evaluation model of damage effect were established. Finally, based on the study results, software for blast damage comprehensive evaluation was developed.A shock wave overpressure measurement system with high resolution and precision was built. Based on the data and explosion law, an improved empirical formula of theâ–³p-R relation was proposed. The results show that the system's relative deviation is less than 5.3%; the average relative deviation is 5.57% in which the results were compared with the experimental data in literature. Meanwhile, in order to accurately measure the shock wave impulse of FAE, a transient impulse measurement method with a slide was proposed. The results show that the slide method can measure the specific impulse of blast wave, effectively. The impulse and action time of single event fuel air explosive (SEFAE) are higher than those of TNT.In order to accurately measure the transient high temperature of FAEs, a multi-wavelength temperature-measuring system was developed, which based on the atomic emission spectroscopy. By measuring the explosion temperature of FAEs in a test field, temperature-time curves were obtained. The results show that there are two temperature peaks which indicate a post-detonation burning effect of SEFAE. The relative deviation of results is less than 2.6%, which shows a good reproducibility. The fireball size, duration and other parameters were gained by an infrared thermal imaging and high-speed video. At the same time, the concept and calculation method of the equivalent temperature of heat radiation were proposed.The explosion fireball's descriptive parameters of a thermobaric explosive and TNT were measured by the infrared imager. According to the experiment data, a dynamic model of fireball thermal radiation was studied. Compared with a static model, the dynamic model is more reasonable to estimate the thermal effect of explosive-fireball, since it can describe the movement of fireball. With the dynamic model of fireball thermal radiation, the thermal damages of the SEFAE and TNT fireballs were analyzed. The results show that the thermal dose of the SEFAE is 3.58-4.84 times more than that of TNT. The impact on the thermal dose should be fully considered by the influence of CO2, while researching on the after-burning effect of SEFAE.Two comprehensive damage effect model of FAE were established:1) a comprehensive damage consequence model. It considered the total economic losses or losing battle effectiveness; 2) a comprehensive damage probability model for personnel targets. The damage probability to personnel was obtained by probability statistics. In order to analyze the feasibility of the models, field explosion tests were carried out with the order of 70kg typical FAE. The results of comprehensive damage consequences model of FAE show that the fragment has the greatest damage range, followed by shock wave and thermal radiation, while suffocation effect take nearly no action to people in the unconfined explosion space. If the personnel density and property density of buildings and equipments are known in the blast field, the comprehensive damage economic losses can be obtained by the comprehensive damage consequence model. The results of comprehensive damage probability model of FAE to personnel targets show that the contrast distance of 50% death probability is respectively 6.25 m/kg1/3(standing posture) and 5.53 m/kg1/3 (lying posture).According to the research results, the software of comprehensively evaluating multi-damage effects was designed with Microsoft.NET 2.0 C#. The evaluation system can improve and systematize the reseach of explosive damage effect. |
