本文選題：溫壓藥劑　切入點(diǎn)：爆炸高溫場　出處：《中北大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：溫壓藥劑爆炸溫度場的測量對分析和評估溫壓彈的熱毀傷效應(yīng)意義重大。溫壓彈爆炸形成瞬態(tài)的高溫、高壓場,同時伴有強(qiáng)烈的沖擊波,具有超強(qiáng)的破壞力。傳統(tǒng)的測溫方式難以滿足其測量需求。鑒于此,本文研究了溫壓藥劑爆炸高溫場紅外測試技術(shù)。以紅外測溫原理為基礎(chǔ),介紹了紅外熱成像技術(shù)。選擇紅外熱像儀作為核心測溫儀器來進(jìn)行系統(tǒng)的搭建。鑒于測量對象的特殊性,選擇定制紅外機(jī)芯,并加裝專用的干涉濾光片及衰減裝置。此系統(tǒng)可以實(shí)現(xiàn)連續(xù)、瞬態(tài)高溫場的溫度測量,同時不會對高溫場產(chǎn)生干擾�？紤]到紅外熱像儀的測量精度,必須對紅外熱像儀進(jìn)行實(shí)時實(shí)地校準(zhǔn),以確保測試數(shù)據(jù)的可靠性,為此設(shè)計了紅外熱像儀輻射定標(biāo)試驗(yàn)。為了測量爆炸火球的尺寸,設(shè)置了幾何定標(biāo)試驗(yàn)。野外測試現(xiàn)場的復(fù)雜環(huán)境極大地影響了測溫系統(tǒng)的測量精度。本文從理論角度分析了影響測溫精度的因素,提出相關(guān)的改進(jìn)措施。并且設(shè)計了驗(yàn)證性實(shí)驗(yàn),實(shí)驗(yàn)采用原子發(fā)射光譜雙譜線法對兩種不同成分的火藥燃燒火焰溫度進(jìn)行測量,與本文搭建的測溫系統(tǒng)測試結(jié)果作比較,相對誤差分別為2.83%和8.77%,進(jìn)一步驗(yàn)證了系統(tǒng)方案設(shè)計的可行性。進(jìn)行了溫壓彈爆炸高溫場測量實(shí)驗(yàn)。其中爆炸火球尺寸的測量包括通過紅外測溫系統(tǒng)測量其表面溫度場的散布范圍和高速運(yùn)動分析儀拍攝直徑信息。系統(tǒng)測量結(jié)果包括:①爆炸火球表面最高溫度為2881℃;②爆炸火球表面高溫場(≥1000℃)持續(xù)時間為1300ms。③高溫場(≥1000℃)最大散布范圍為12.61m,可見光范圍得到的最大直徑為13.16m。此溫壓彈在熱效能方面整體性能良好且穩(wěn)定,通過與可見光的測量對比,進(jìn)一步確定了數(shù)據(jù)的可靠性。測試結(jié)果表明,測試數(shù)據(jù)具有一定的精確性和可靠性。測試系統(tǒng)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，

本文編號：1647259