Nondestructive analysis of core-junction and joint-debond effects in advanced composite structure

Sikdar, Shirsendu and Ostachowicz, Wiesław (2019) Nondestructive analysis of core-junction and joint-debond effects in advanced composite structure. Polymer Testing, 73. pp. 31-38. ISSN 0142-9418

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This paper presents a theoretical, numerical and experimental analysis of Lamb wave propagation and joint-debond identification in an advanced composite structure with core-junction. In the process, the wave modes in the recorded sensor-signals are effectively identified based on the theoretically obtained time-history response and dispersion curves for the sample structure. In order to study the core-junction and joint-debond effects, the finite element based numerical simulations were carried out in ABAQUS and the results verified with laboratory experiments. It was observed that the presence of core-junction in the structure reduces the propagating Lamb wave mode amplitudes, whereas the presence of localized joint-debond significantly increases the modal amplitudes. The study was further extended for the analysis of variable core-junction thickness and joint-debond size effects on the amplitude difference between the baseline and affected Lamb wave signals. Finally, a baseline-free debond detection strategy is proposed for the detection of hidden joint-debond locations in the target structure.

Item Type: Article
Additional Information: Funding Information: The research work is funded by the Polish National Science Centre (NCN) under grant agreement number: UMO-2016/23/N/ST8/01326 in the frame of the PRELUDIUM 12 project. Publisher Copyright: © 2018
Uncontrolled Keywords: advanced composite structure,core-junction,dispersion,epoxy adhesive,joint-debond,lamb wave,piezoelectric transducers,organic chemistry,polymers and plastics ,/dk/atira/pure/subjectarea/asjc/1600/1605
Faculty \ School: Faculty of Science > School of Engineering
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Depositing User: LivePure Connector
Date Deposited: 10 Nov 2021 08:13
Last Modified: 21 Apr 2023 01:10
DOI: 10.1016/j.polymertesting.2018.11.011

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