A three dimensional (3D) hybrid method combining the classical finite element (FE) method
with the semi-analytical finite element (SAFE) technique is developed. This hybrid method is …

Multimodal and dispersive characteristics of ultrasonic guided waves (GWs) cause the wave-
packet overlapping in time domain and frequency domain, which challenges the signal …

A new ultrasonic propagation system has been constructed using macrofiber composite
(MFC) actuators and fiber Bragg grating (FBG) sensors. The MFCs and FBGs can be …

In this paper we demonstrate a non-destructive, non-contact detection method for small
defects in thin polymer plates using an air coupled ultrasonic (ACUS) setup. There exist …

One of the most important parts of gliders is a lightweight longeron reinforcement made of
carbon fibre reinforced plastic (CFRP) rods. During manufacturing, in order to build the …

The interactions between ultrasonic waves and damage provide crucial information for
developing effective damage detection techniques in various fields, including non …

The interaction of the fundamental Lamb modes with asymmetrical discontinuities in
isotropic plates is studied numerically and experimentally. Three kinds of discontinuities that …

Mode conversions of Lamb waves can occur upon encountering damage or defect such as a
notch, leading to newly-converted modes apart from wave reflection and transmission. In this …

In recent years, much attention has been paid to the use of Lamb waves for structural health
monitoring. This choice is prompted by the high speed of Lamb wave inspection, although …

The aim of this work is to study the fundamental Lamb modes interaction with defects in
isotropic plates. For these experimental investigations, symmetrical notches with various …