Recent progress of sonic IR imaging and its application in defect detection of aeronautical materials
FENG Fuzhou1,2, ZHU Junzhen1,2, LI Zhinong2
1. Army Academy of Armored Forces, Beijing 100072, China;
2. Key Laboratory of Nondestructive Testing of Ministry of Education, Nanchang Hangkong University, Nanchang 330063, China
Sonic IR imaging enjoys the advantages of precise defect positioning, high thermal SNR (signal to noise ratio), material suitability, etc. It has shown good capabilities of detecting defects in aeronautical materials and key components, such as engine blades, landing gears, wings, honeycomb sandwiched structures, etc. Firstly, the working principle and system configuration of sonic IR imaging are introduced. Then, the development of sonic IR imaging is reviewed from seven main aspects, i.e., vibration characteristic, heating characteristic, simulation modelling, testing condition, thermal image processing & defect identification, defect detectability, and application. The features of sonic IR imaging are also highlighted. Additionally, a detailed description of defect detection for aeronautical metals and composites is summarized. Finally, the future trends of sonic IR imaging are discussed, which provide certain references for its research and application in testing aeronautical materials.
冯辅周, 朱俊臻, 李志农. 超声红外热像技术发展现状及其在航空材料缺陷检测中的应用[J]. 航空制造技术, 2022, 65(20): 36-53.
FENG Fuzhou, ZHU Junzhen, LI Zhinong. Recent progress of sonic IR imaging and its application in defect detection of aeronautical materials[J]. Aeronautical Manufacturing Technology, 2022, 65(20): 36-53.