温压药剂爆炸高温场特性红外测试技术研究

发布时间：2018-03-22 05:24

  本文选题：温压药剂　切入点：爆炸高温场　出处：《中北大学》2016年硕士论文　论文类型：学位论文

【摘要】：温压药剂爆炸温度场的测量对分析和评估温压弹的热毁伤效应意义重大。温压弹爆炸形成瞬态的高温、高压场,同时伴有强烈的冲击波,具有超强的破坏力。传统的测温方式难以满足其测量需求。鉴于此,本文研究了温压药剂爆炸高温场红外测试技术。以红外测温原理为基础,介绍了红外热成像技术。选择红外热像仪作为核心测温仪器来进行系统的搭建。鉴于测量对象的特殊性,选择定制红外机芯,并加装专用的干涉滤光片及衰减装置。此系统可以实现连续、瞬态高温场的温度测量,同时不会对高温场产生干扰。考虑到红外热像仪的测量精度,必须对红外热像仪进行实时实地校准,以确保测试数据的可靠性,为此设计了红外热像仪辐射定标试验。为了测量爆炸火球的尺寸,设置了几何定标试验。野外测试现场的复杂环境极大地影响了测温系统的测量精度。本文从理论角度分析了影响测温精度的因素,提出相关的改进措施。并且设计了验证性实验,实验采用原子发射光谱双谱线法对两种不同成分的火药燃烧火焰温度进行测量,与本文搭建的测温系统测试结果作比较,相对误差分别为2.83%和8.77%,进一步验证了系统方案设计的可行性。进行了温压弹爆炸高温场测量实验。其中爆炸火球尺寸的测量包括通过红外测温系统测量其表面温度场的散布范围和高速运动分析仪拍摄直径信息。系统测量结果包括:①爆炸火球表面最高温度为2881℃;②爆炸火球表面高温场(≥1000℃)持续时间为1300ms。③高温场(≥1000℃)最大散布范围为12.61m,可见光范围得到的最大直径为13.16m。此温压弹在热效能方面整体性能良好且稳定,通过与可见光的测量对比,进一步确定了数据的可靠性。测试结果表明,测试数据具有一定的精确性和可靠性。测试系统可行。
[Abstract]:The measurement of explosive temperature field is of great significance to the analysis and evaluation of thermal damage effect of thermobaric projectile, which forms transient high temperature, high pressure field and strong shock wave. The traditional method of measuring temperature is difficult to meet the requirement of measurement. In view of this, this paper studies the infrared measurement technology of explosion and high temperature field of temperature and pressure explosive, which is based on the principle of infrared temperature measurement. The infrared thermal imaging technology is introduced. The infrared thermal imager is chosen as the core temperature measuring instrument to build the system. In view of the particularity of the measuring object, the custom infrared machine is chosen. Special interference filter and attenuation device are also installed. The system can measure the temperature of continuous and transient high temperature field without interfering with the high temperature field. Considering the measuring precision of infrared thermal imager, The infrared thermal imager must be calibrated in real time in order to ensure the reliability of the test data. For this purpose, the infrared thermal imager radiation calibration test is designed. The geometric calibration test is set up. The complex environment in the field greatly affects the measurement accuracy of the temperature measurement system. This paper analyzes the factors affecting the temperature measurement accuracy from the theoretical point of view. The related improvement measures are put forward, and a confirmatory experiment is designed, in which the flame temperature of two different components of gunpowder is measured by atomic emission spectrum double line method, and the results are compared with the test results of the temperature measurement system built in this paper. The relative errors are 2.83% and 8.77, respectively, which further verify the feasibility of the design of the system scheme. The experiment of measuring the temperature field of the explosion is carried out. The measurement of the size of the explosive fireball includes the measurement of the surface temperature of the explosive fireball by the infrared temperature measuring system. The dispersion range of the degree field and the diameter information taken by the high speed motion analyzer. The results of the systematic measurement include that the maximum surface temperature of the 1: 1 explosive fireball is 2881 鈩，

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