Hervin, F;
Fromme, P;
(2023)
Guided wave skew velocity correction in anisotropic laminates.
Ultrasonics
, 133
, Article 107047. 10.1016/j.ultras.2023.107047.
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Abstract
Guided ultrasonic wave propagation in anisotropic structures results in directional dependency of velocity and wave skewing effects that can impact the accuracy of damage detection. Phase and group velocities of the A0 guided wave mode, propagating in a unidirectional carbon fiber reinforced laminate, were investigated experimentally and through finite element analysis. A correction for the significant offset in phase and group velocities due to wave skewing effects is illustrated for both point and short line sources, achieving good agreement with theoretical calculations assuming planar wave fronts. The influence of the line excitation length on velocity measurements is discussed.
| Type: | Article |
|---|---|
| Title: | Guided wave skew velocity correction in anisotropic laminates |
| Location: | Netherlands |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.ultras.2023.107047 |
| Publisher version: | https://doi.org/10.1016/j.ultras.2023.107047 |
| Language: | English |
| Additional information: | © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Anisotropy, Beam steering, CFRP, Composites, Lamb Waves |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10171856 |
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