The anisotropy of composites aggravates the dispersion and multimodal characteristics of
ultrasonic guided waves propagating in them. At present, most damage imaging methods
are prone to inaccurate positioning, artifacts and false imaging when used in composites
damage detection. Therefore, an ultrasonic guided waves imaging method based on particle
swarm optimization (PSO) is proposed in this paper, and the damage location of composites
is realized by target optimization. The fitness function for damage imaging is designed …