Journal of Experiental Mechanicals

表面涂层半球全发射率的非接触测量探索

Study on non-contact measurement of total hemispherical emissivity of surface coatings

Received:June 05, 2023 Revised:June 21, 2023

英文关键词:non-contact infrared camera total hemispherical emissivity coating

基金项目:国家自然科学基金项目(12072184)

Author Name	Affiliation
YE Chengjiong	School of Mechanics and Engineering Sciences, Shanghai University, Shanghai Institute of Applied Mathematics and Mechanics, Shanghai 200444, China
DONG Xuejin	Shanghai Institute of Spacecraft Equipment, Shanghai 200240, China
SHAO Hongliang	Shanghai Institute of Spacecraft Equipment, Shanghai 200240, China
LI Xiaodong	Shanghai Institute of Spacecraft Equipment, Shanghai 200240, China
ZHANG Dongsheng	School of Mechanics and Engineering Sciences, Shanghai University, Shanghai Institute of Applied Mathematics and Mechanics, Shanghai 200444, China

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中文摘要:

涂层表面发射率是飞行器表面涂层性能的关键指标之一。本文针对现有测量方法的局限性,建立了非接触测量半球全发射率的数学模型,应用红外相机作为探测器,开发了涂层发射率的非接触测量装置,该装置可实现原位、实时的测量；通过实验分析了影响测量结果的多个因素,利用搭建的非接触测量装置对多种涂层试样进行了标定和检测,并将测试结果与某型辐射率仪的测量结果进行比较,半球全发射率最大相对误差百分数小于4.1%,验证了该测量方法的有效性。

英文摘要:

Emissivity of coating surface is one of the key parameters of aircraft performance. Due to the limitations of existing measurement methods, this paper establishes a mathematical model for non-contact measurement of total hemispherical emissivity, and develops a non-contact measurement device for coating emissivity which enables in-situ, real-time measurements, by means of an infrared camera. Some key factors that affect measurement results are discussed. After the developed non-contact measurement setup was constructed,it was utilized to calibrate and measure a variety of coating specimens. The measurement results were compared with the existing device,and it was found that the maximum relative error percentage of total hemispherical emissivity was less than 4.1%, which verified the validity of the measurement method.

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