关键词: 航空航天结构, 结构健康监测, 电阻抗层析成像, 无损检测, 压缩感知

Abstract: Electrical impedance imaging technology (EIT), as an emerging damage monitoring technique, is deemed highly promising in aerospace structural health monitoring, owing to its non-invasive nature, rapid response, and simple equipment setup. This article first reviews the developmental history of electrical impedance tomography algorithms and summarizes the significant achievements made in recent years, both domestically and internationally, in for-ward problem modeling, regularization, and inverse problem solving. Then, a systematic summary was conducted on the damage monitoring applications of EIT technology for resin-based, ceramic-based, and other functional ma-terials commonly used in the aerospace field. The existing feasible electrode array arrangements and excitation schemes for three-dimensional structures using EIT technology were also summarized. Finally, the existing tech-nical problems of electrical impedance tomography technology were pointed out, and the future development direc-tion was discussed.

Key words: Aerospace structures, Structural health monitoring, Electrical impedance tomography, Non-Destructive Testing, Compressive sensing