Ultrasonic guided wave-based detection of structural defects or damages is one of the
promising methods for structural health monitoring (SHM). A significant proportion of
structural elements in an aircraft structure and other civil and marine structures are thin
structures and those components can be monitored using ultrasonic guided wave.
Piezoelectric transducers have been extensively applied to ultrasonic wave based non-
destructive inspection (NDI). SHM is considered an extension of NDI adding a new …