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Volume 40 Issue 8
Aug.  2014
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Journal of Beijing University of Aeronautics and Astronautics  > 2014  >  40(8): 1022-1026.
Yang Yongjun, Wang Zhongyu, Zhang Shukun, et al. Material spectral emissivity measurement optimized by multi-spectral temperature measured[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(8): 1022-1026. doi: 10.13700/j.bh.1001-5965.2013.0504(in Chinese)
Citation: Yang Yongjun, Wang Zhongyu, Zhang Shukun, et al. Material spectral emissivity measurement optimized by multi-spectral temperature measured[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(8): 1022-1026. doi: 10.13700/j.bh.1001-5965.2013.0504(in Chinese)
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Material spectral emissivity measurement optimized by multi-spectral temperature measured

doi: 10.13700/j.bh.1001-5965.2013.0504

  • 1. School of Instrumentation Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

  • 2. Beijing Changcheng Institute of Metrology and Measurement, Beijing 100095, China

  • Received Date: 28 Aug 2013
  • Publish Date: 20 Aug 2014
    Abstract
  • The sample surface temperature is difficult to measure in the infrared spectral emissivity measurement of high-temperature material. Optimized temperature measurement method was proposed by multi-spectral method using the spectral radiation energy data measured by spectrometer. The effect of emissivity model and measuring band selected on the accuracy of temperature measurement was analyzed. A robust calculation algorithm was recommended, and its main sources of uncertainty were evaluated. To verify the effectivity of the method, a high temperature alloy material was tested at a temperature of about 1 100 K, and its spectral emissivity relative uncertainty is less than 2% within 2-20 μm spectral range. It shows that this optimized method meets the demand of infrared stealth and radiation thermometry, and can be applied in high temperature spectral emissivity measurement of poor thermal conductivity material or coating material.

     

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