Volume 13 Issue 6
Dec.  2020
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GAO Yin-jun, GAO Li-hong, ZHANG Xiang-hua, MA Zhuang, LIU Feng, PENG Guo-liang, TIAN Zhou. Energy coupling characteristic of materials under thermal radiation produced by strong explosion[J]. Chinese Optics, 2020, 13(6): 1267-1275. doi: 10.37188/CO.2020-0053
Citation: GAO Yin-jun, GAO Li-hong, ZHANG Xiang-hua, MA Zhuang, LIU Feng, PENG Guo-liang, TIAN Zhou. Energy coupling characteristic of materials under thermal radiation produced by strong explosion[J]. Chinese Optics, 2020, 13(6): 1267-1275. doi: 10.37188/CO.2020-0053

Energy coupling characteristic of materials under thermal radiation produced by strong explosion

doi: 10.37188/CO.2020-0053
Funds:  Supported by National Natural Science Foundation of China (No. 51772027, No. 91330205)
More Information
  • Corresponding author: hstrong929@bit.edu.cn
  • Received Date: 31 Mar 2020
  • Rev Recd Date: 26 May 2020
  • Available Online: 07 Sep 2020
  • Publish Date: 01 Dec 2020
  • To obtain the energy coupling characteristic of materials under strong explosive thermal radiation, a physical model for calculating radiation source parameters and atmospheric transmission is constructed, and the characteristics of the radiation spectrum at the target location under different conditions are obtained. The energy coupling coefficients of several kinds of materials are produced by spectral reflectance measurement and by calculating the average absorption coefficient of thermal radiation. The coupling coefficients of metal and ceramic materials are relatively small while it can be as high as 0.92 for carbon fiber epoxy composites. The coupling coefficient calculated from the actual thermal radiation spectrum is higher than that calculated from 6000 K blackbody radiation spectrum, and the maximum difference is about 14%. Taking aluminum material as an example, the coupling coefficient of thermal radiation decreases gradually with the increase of explosion yield and distance, but the overall variation is small.

     

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