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Understanding the Propagation of Guided Ultrasonic Waves in Undamaged Composite Plates

Murat, B; Fromme, P; (2017) Understanding the Propagation of Guided Ultrasonic Waves in Undamaged Composite Plates. In: Proceedings of the 14th International Conference of the Slovenian Society for Non-Destructive Testing. (pp. pp. 23-32). NDT.net: Bernardin, Slovenia. Green open access

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Abstract

This project is motivated by the goal to improve the understanding of guided ultrasonic wave propagation in composite plates. Wave dispersion, attenuation and their angular dependency were investigated in composite plates with different fibre arrangements. The 3D finite element (FE) composite models are constructed in MATLAB, which the parameters can be altered easily, and the simulations were performed using ABAQUS/Explicit. The simulated wave characteristics for different composite models were compared to the experimental results. An approximation propagation of the A0wave mode using the FE analysis is established and validated. In this study, the complexity of the wave characteristic being dependent on the fibre arrangement is shown. The properties of the A0wave mode in unidirectional composite plate show a significant directional dependency. This could affect the detection sensitivity when the guided waves is monitored not in principle directions. This complication is crucial to be understood in order to improve the interpretation of received signals, particularly for defect characterization.

Type: Proceedings paper
Title: Understanding the Propagation of Guided Ultrasonic Waves in Undamaged Composite Plates
Event: 14th International Conference of the Slovenian Society for Non-Destructive Testing
ISBN-13: 9789619353738
Open access status: An open access version is available from UCL Discovery
Publisher version: https://www.ndt.net/search/docs.php3?showForm=off&...
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Guided ultrasonic waves, composite plates
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/10053335
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