发光学报2018，Vol.39Issue(5)：653-660,8.DOI:10.3788/fgxb20183905.0653
高速碰撞诱发闪光辐射温度的测量及误差分析
Measurement and Error Analysis of Flash Radiant Temperature Induced by High-velocity Impact
摘要
Abstract
In order to realize the experimental measurement and error analysis of flash radiant tem-perature induced by high-velocity impact, loading system of two-stage light gas gun and measurement system of flash radiant temperature were set up. Polycarbonate projectiles were accelerated to 6 km/s, 3. 9 km/s to impact 2A12 aluminum plate vertically, and instantaneous optical pyrometer was uti-lized to acquire flash signals, at the same time flash radiant intensities and temperatures were calcu-lated by the ratio method under the different impact conditions. Theoretical values of flash radiant intensities were calculated with different wavelengths and temperatures based on Plank radiant law, thus the error analysis could be obtained by comparing the theoretical values with the experimental ones;the flash radiant temperatures and its average temperature were calculated by selecting corre-sponding flash radiant intensities of different wavelengths according to the methods of two-color and four-color temperature measurement, and the influence of wavelength's selection to flash radiant temperature was analyzed by calculating the standard deviation. The results show that the flash ra-diant intensities of experimental measurement are lower than the ones of theoretical value, and the selection of wavelength has a great influence on the calculating results of flash radiant temperature from the method of two-color temperature measurement, meanwhile, the bigger interval of wavelength is, the smaller the calculating error becomes (the minimum error is 68. 25 K in experiment No. 1 and 30. 67 K in experiment No. 2);the flash radiant temperature calculated by the method of four-color temperature measurement is close to the average temperature (the error is 72. 88 K in experiment No. 1 and 63. 66 K in experiment No. 2), therefore, the bigger interval of wavelength and multiple wavelengths should be adopted in order to reduce error during calculating flash radiant temperature.关键词
高速碰撞/闪光辐射强度/闪光辐射温度/瞬态光纤高温计/误差分析Key words
high-velocity impact/flash radiant intensity/flash radiant temperature/instantaneous optical pyrometer/error analysis分类
数理科学引用本文复制引用
韩雅菲,李振波,唐恩凌,贺丽萍,王猛,郭凯,夏瑾,刘淑华,马建军,王睿智..高速碰撞诱发闪光辐射温度的测量及误差分析[J].发光学报,2018,39(5):653-660,8.基金项目
国家自然科学基金(11472178,11272218)资助项目 Supported by National Natural Science Foundation of China (11472178,11272218) （11472178,11272218）
