Thickness measurement of thermal barrier coating by pulsed thermography

文献类型： 外文期刊

第一作者： Wang, Sen

作者： Wang, Sen;Tao, Ning;Sun, Jiangang;He, Qing;Ge, Chao;Wang, Shixing

作者机构：

关键词： thermal barrier coatings; pulsed thermography; finite element simulation; coating thickness measurement; multilayer analysis method

期刊名称：INFRARED, MILLIMETER-WAVE, AND TERAHERTZ TECHNOLOGIES VIII

ISSN： 0277-786X

年卷期： 2021 年 11906 卷

页码：

收录情况： SCI

摘要： Thermal barrier coatings (TBCs) have been widely used in hot end components of engines, such as blades and combustors, due to their high temperature corrosion resistance, heat insulation and oxidation resistance. The thermal conductivity, constant pressure heat capacity and coating thickness are important indexes in the design process of TBCs. A reasonable coating thickness is an important criterion for its quality evaluation. In this paper, pulsed thermal imaging multilayer analysis method is used to measure the coating thickness of thermal barrier coating samples. Firstly, a two -layer model is constructed by finite element simulation to obtain the measurement results under ideal conditions, and the method is evaluated. Then, the accuracy of the method is further verified by experiments with five TBC samples with different coating thickness.

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