A probabilistic approach for quantitative identification of multiple delaminations in laminated composite beams using guided waves

Abstract

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Second harmonic generation at fatigue cracks by low-frequency Lamb waves: Experimental and numerical studies

“…Among various NDE and SHM techniques, Lamb wave has attracted significant attention due to its outstanding properties, such as ability to propagate a long distance, able to provide rapid inspection, high sensitivity to many types of mechanical damages, and detection of damages at inaccessible at locations [1]- [4]. In the last two decades, different Lamb wave based techniques [5]- [9] have been developed for damage detection. The majority of the developments focused on linear Lamb wave that determines the presence of damage based on the change of wave speed, reflection and transmission, or mode conversion [10] of the linear wave signals, i.e.…”

Modelling and analysis of nonlinear guided waves interaction at a breathing crack using time-domain spectral finite element method

“…In the literature, the study of the mode-conversion effect has been limited to linear guided waves. For example, the mode-converted linear guided wave signal has been employed to detect delaminations in composite laminates [23], and cracks in aluminium beams [57]. In contrast, there are a very limited number of studies focused on the mode conversion of nonlinear guided waves.…”

Second Harmonic Generation of Guided Wave at Crack-Induced Debonding in FRP-Strengthened Metallic Plates

“…Guided wave, with the ability to inspect a larger area compared with the ultrasonic bulk wave 9 and high sensitivity to small and different types of damages [10][11][12] , provides an attractive approach for damage detection. In the last two decades, guided wave has attracted significant research interests 9,12 .…”