Multi-level nondestructive analysis of joint-debond effects in sandwich composite structure

Sikdar, Shirsendu (2019) Multi-level nondestructive analysis of joint-debond effects in sandwich composite structure. Polymer Testing, 80. ISSN 0142-9418

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Abstract

This paper presents a non-destructive analysis of joint-debond effects on propagating guided wave modes under variable ambient temperature conditions and proposal of an online monitoring strategy for identification of single as well as multiple joint-debond regions in a sandwich composite structure (SCS). A semi-analytical analysis of guided wave dispersion in a SCS was carried out to identify different wave modes within the operating frequency range. An extensive analysis of core-core joint-debond effects on the guided wave modes under variable temperature conditions was studied by performing experimental investigations and validated finite element simulations. The analysis results showed that the presence of joint-debond at the core-core interface significantly increases the wave mode amplitudes and the increase in ambient temperature further increases the amplitude difference between the bonded and debonded-influenced signals. An online monitoring strategy is proposed to effectively identify the hidden joint-debonds in SCS based on the extracted differential features of debond effects in the wave mode amplitudes of the sensor signals.

Item Type: Article
Additional Information: Funding Information: The research work is funded by the National Science Centre (NCN), Poland under grant agreement number: UMO-2018/29/B/ST8/02904 in the frame of the OPUS 15 project. Funding Information: The research work is funded by the National Science Centre (NCN), Poland under grant agreement number: UMO-2018/29/B/ST8/02904 in the frame of the OPUS 15 project. Publisher Copyright: © 2019 Elsevier Ltd
Uncontrolled Keywords: dispersion,guided wave,joint-debond,piezoelectric transducers,sandwich composite structure,organic chemistry,polymers and plastics ,/dk/atira/pure/subjectarea/asjc/1600/1605
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Depositing User: LivePure Connector
Date Deposited: 10 Nov 2021 08:13
Last Modified: 10 Nov 2021 08:13
URI: https://ueaeprints.uea.ac.uk/id/eprint/82007
DOI: 10.1016/j.polymertesting.2019.106149

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