Barely visible impact damage identification in a 3D core sandwich structure

Sikdar, Shirsendu, Ostachowicz, Wiesław, Kudela, Paweł and Radzieński, Maciej (2017) Barely visible impact damage identification in a 3D core sandwich structure. Computer Assisted Methods in Engineering and Science, 24 (4). pp. 259-268. ISSN 2299-3649

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Abstract

3D core sandwich structure (3DCSS) is a popular lightweight construction material in the automotive, aerospace and marine industries. However, barely visible low-speed impact-damage (BVLID) may occur in the 3DCSS due to foreign-object-impact that can significantly reduce the load-bearing capacity of the structure. This paper presents a guided wave (GW) propagation based BVLID identification technique for the 3DCSS. A global-matrix formulation based semi-analytical model is applied to generate the dispersion curve for the GW propagation in the 3DCSS. It is observed that the GW propagation in the 3DCSS is multi-modal in nature. Finite-element numerical simulation of GW propagation in the 3DCSS is carried out in Abaqus. A significant increment in the primary antisymmetric mode is noticed due to the presence of BVLID region in the structure. Experiments are then conducted on a 3DCSS sample to validate the simulation results. There is a good agreement between the simulation and experimental results in all the cases.

Item Type: Article
Additional Information: Funding Information: This research work was funded by the Polish National Science Centre (NCN) under Grant Agreement Number – UMO-2016/23/N/ST8/01326. Publisher Copyright: Copyright © 2017 by Institute of Fundamental Technological Research, Polish Academy of Sciences
Uncontrolled Keywords: 3d core sandwich structure,barely visible impact damage,dispersion curve,guided wave,computational mechanics,mechanical engineering,computer science applications,sdg 14 - life below water ,/dk/atira/pure/subjectarea/asjc/2200/2206
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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/82015
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