Thickness measurement of thermal barrier coating by pulsed thermography

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

doi:10.1117/12.2602765

9 October 2021 Thickness measurement of thermal barrier coating by pulsed thermography

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

Proceedings Volume 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII; 119061H (2021) https://doi.org/10.1117/12.2602765
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

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.

Citation Download Citation

Sen Wang, Ning Tao, Qing He, Chao Ge, Shixing Wang, and Jiangang Sun "Thickness measurement of thermal barrier coating by pulsed thermography", Proc. SPIE 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII, 119061H (9 October 2021); https://doi.org/10.1117/12.2602765

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