Progress and Trends in Non-destructive Testing for Thermal Barrier Coatings Based on Infrared Thermography: A Review

Journal of Nondestructive Evaluation - Tập 41 - Trang 1-26 - 2022
Jianguo Zhu1,2, Zhuangzhuang Mao2, Dongliang Wu3, Jiangfan Zhou4, Dacheng Jiao2, Wenxiong Shi5, Wenying Zhu2, Zhanwei Liu2
1Department of Mechanics and Engineering Science, Jiangsu University, Jiangsu, China
2School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
3Beijing Institute of Spacecraft Environment Engineering, Beijing, China
4Beijing Institute of Structure & Environment Engineering, Beijing, China
5AML, Department of Engineering Mechanics, Tsinghua University, Beijing, China

Tóm tắt

Thermal barrier coatings (TBCs), as effective thermal protection separating the substrate from high-temperature combustion gases and reducing the substrate temperature, are widely used in aerospace and other fields. During the service cycle of life, surface crack defects, interface disbond defects, and coating thickness changes are the main non-destructive testing (NDT) objects of TBCs. In this paper, the main active infrared thermography NDT techniques including the optical infrared thermography testing, the ultrasonic infrared thermography testing, and the microwave thermography testing techniques are reviewed. Through the summary and highlight of the detection principle and application status of these state-of-the-art techniques, the development of the active infrared thermography DNT technique in TBCs is presented. By comparing the sensitivity, advantages, and disadvantages of the techniques in TBC NDT, can provide a significant reference for researchers to choose an appropriate method. It is noteworthy that fabrication techniques of artificial defects for calibration of the active infrared thermography NDT technique inspection of TBC systems are also reviewed. Moreover, future trends in NDT for the TBC system based on the active infrared thermography NDT technique are also discussed and analyzed.

Tài liệu tham khảo

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