Review on acoustic emission source location, damage recognition and lifetime prediction of fiber-reinforced composites

Acoustic emission technology is an effective nondestructive testing method for fiber-reinforced composites, which can monitor the damage process in real time. The main purpose of this paper is to review the information from the various literature articles published on mechanical property and acoustic emission technology of fiber-reinforced composites. It presents a comprehensive review of acoustic emission source location, damage mechanism analysis and life prediction. Initially, several localization methods were introduced in detail under known and unknown sound velocities. More importantly, cluster analysis (unsupervised learning and supervised learning) and waveform processing based on acoustic emission detection technology were discussed. Furthermore, features regarding the prediction of the remaining strength or service life of the composites were listed and explained. Finally, the future development of acoustic emission precise location and intelligent damage pattern recognition were prospected. Starting from the achievable functions, it provides theoretical support for the wider application and further development of the technology. [graphics]