“…In addition, structural vibration is produced during operation of the component/structure and no input source of excitation is required. However, in most of the published literature, the parameters of structural vibration (e.g., natural frequency, modal damping) have been used for the global assessment (i.e., presence) of delamination [66][67][68][69]. The results of the methodology proposed in this work show the possibility to employ low-frequency structural vibration for the global (i.e., detection) and local assessment (i.e., localization, For the in-plane location of delamination (Figure 8a), it is observed that the inner delaminations (AM, BM, CM) are difficult to detect compared with the edge delaminations (AU, AL, BU, BL, CU, CL).…”