Structural health monitoring (SHM) is the continuous on-board monitoring of a structure's
condition during operation by integrated systems of sensors. SHM is believed to have the …

Ultrasonic guided wave (UGW) is one of the most commonly used technologies for non-
destructive evaluation (NDE) and structural health monitoring (SHM) of structural …

Delamination in composite structures is characterized by a resonant cavity wherein a
fraction of an ultrasonic guided wave may be trapped. Based on this wave trapping …

The propagation of finite-amplitude waves in a homogeneous, isotropic, stress-free elastic
plate is investigated theoretically. Geometric and weak material non-linearities are included …

Frames, shells, and hybrid structures with early damages, such as early cracks, often
behave as extremely weak nonlinear systems, among which the nonlinearity is difficult to be …

In engineering practice, failures due to fatigue cracks in metallic structures have always
been difficult to predict. In our study, nonlinear Lamb wave-mixing was applied in the …

This paper presents an automated crack visualization technique using ultrasonic wavefield
images obtained by a complete noncontact laser scanning system. First, the complete …

Bolted structures are widely utilized in industrial structures and equipment due to the
numerous advantages they possess. However, the use of bolts in these structures by itself …

In this study, a Lamb wave based nonlinear method is used to detect delamination in a
composite laminate. For this purpose, an artificial delamination is created in a composite …

This paper presents the results of experimental studies on piezoelectric lead-zirconate–
titanate (PZT)-based active damage detection techniques for nondestructive evaluations …