Study of Multispectral Temperature Measurement Technique for Laser Damage

doi:10.3969/j.issn.1000-1093.2019.01.025

Abstract

Abstract: In order to study the change of the state of the damaged region in laser damage, an improved multi-spectral temperature measurement technique is proposed based on the regular damage area and temperature distribution of the target area during laser damage. The radiation spectrum in damaged area is inersely analyzed. And the temperature inversion of radiation spectrum in damaged area is made by multispectral temperature measurement. The temperature measurement accuracy and influencing factors of colorimetric thermometry and multispectral thermometry under the same conditions are studied. Through the spectral inversion of target radiation spectrum at 1 500 K by multispectral thermometry, the improved multispectral temperature measurement technique can be used to reduce the temperature measurement error by 24%. And the temperature measurement error was reduced by 60% in the simulation experiment. According to the area distribution of different temperature regions, it can provide feedback and optimize the precision of the inversion of temperature distribution in the target region, which provides a way of thinking for the measurement of temperature distribution in the target region. Key

Key words: laserdamage, multispectralthermometry, blackbodyradiationlaw, leastsquaremethod, optimizationmethod

CLC Number:

O433.4

QIN Yalou, LI Wei, YANG Chunping, WEI Yanbin, PENG Zhenming. Study of Multispectral Temperature Measurement Technique for Laser Damage[J]. Acta Armamentarii, 2019, 40(1): 219-224.

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第40卷第1期
2019 年1月兵工学报ACTA
ARMAMENTARIIVol.40No.1Jan.2019