Leaky and Non-Leaky Behaviour of Guided Waves in CF/EP Sandwich Structures

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Mustapha, Samir; Ye, Lin


2014-04-02


Journal Article


Journal of Wave Motion


51


6


905-918


The aim of this study is to investigate the leaky and non-leaky behaviour of guided waves in CF/EP sandwich structures, focusing on the fundamental symmetric and anti-symmetric Lamb wave modes and Rayleigh waves. In investigating the core effect on the guided wave propagation different types of core are used, namely Nomex honeycomb (HRH 10 1/8-3) 10 and 20 mm in thickness and foam (Divinycell® PVC). The behaviour of the Lamb wave modes is characterised and the conversion mechanism to Rayleigh wave is investigated. Further, leaky and non-leaky behaviour of guided waves upon interacting with debonded areas is explored, where the ability of guided waves to identify debonding of different size was assessed. Finite element analysis simulations are presented to support the experimental analysis, where propagation of ultrasonic waves and their interaction with debonded areas are quantitatively examined.


Data61; NICTA; CF/EP sandwich structures; Guided Waves; Rayleigh wave; Debonding; Finite element simulations


https://doi.org/10.1016/j.wavemoti.2014.03.004


English


nicta:7363


Mustapha, Samir; Ye, Lin. Leaky and Non-Leaky Behaviour of Guided Waves in CF/EP Sandwich Structures. Journal of Wave Motion. 2014-04-02; 51(6):905-918. <a href="https://doi.org/10.1016/j.wavemoti.2014.03.004" target="_blank">https://doi.org/10.1016/j.wavemoti.2014.03.004</a>



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