Vibration-based detection of skin-stiffener debonding on composite stiffened panels using surrogate-assisted algorithms

Stiffened panel is a common application of fiber reinforced polymer (FRP) laminates in engineering industries, particularly those in mechanical and aerospace domains. However, laminated structures such as stiffened FRP panels are sensitive to impact and frequently suffer from invisible inter-laminar defects, for instance, in the bonding interface between the stiffener and the skin plate, which results in a considerable reduction of structural...