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Delamination Detection and Localization in Vibrating Composite Plates and Shells Using the Inverse Finite Element Method

Delamination damage is one of the most critical damage modes of composite materials. It takes place through the thickness of the laminated composites and does not show subtle surface effects. In the present study, a delamination detection approach based on equivalent von Mises strains is demonstrate...

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Autores principales: Ganjdoust, Faraz, Kefal, Adnan, Tessler, Alexander
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10535162/
https://www.ncbi.nlm.nih.gov/pubmed/37765982
http://dx.doi.org/10.3390/s23187926
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author Ganjdoust, Faraz
Kefal, Adnan
Tessler, Alexander
author_facet Ganjdoust, Faraz
Kefal, Adnan
Tessler, Alexander
author_sort Ganjdoust, Faraz
collection PubMed
description Delamination damage is one of the most critical damage modes of composite materials. It takes place through the thickness of the laminated composites and does not show subtle surface effects. In the present study, a delamination detection approach based on equivalent von Mises strains is demonstrated for vibrating laminated (i.e., unidirectional fabric) composite plates. In this context, the governing relations of the inverse finite element method were recast according to the refined zigzag theory. Using the in situ strain measurements obtained from the surface and through the thickness of the composite shell, the inverse analysis was performed, and the strain field of the composite shell was reconstructed. The implementation of the proposed methodology is demonstrated for two numerical case studies associated with the harmonic and random vibrations of composite shells. The findings of this study show that the present damage detection method is capable of real-time monitoring of damage and providing information about the exact location, shape, and extent of the delamination damage in the vibrating composite plate. Finally, the robustness of the proposed method in response to resonance and extreme load variations is shown.
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spelling pubmed-105351622023-09-29 Delamination Detection and Localization in Vibrating Composite Plates and Shells Using the Inverse Finite Element Method Ganjdoust, Faraz Kefal, Adnan Tessler, Alexander Sensors (Basel) Article Delamination damage is one of the most critical damage modes of composite materials. It takes place through the thickness of the laminated composites and does not show subtle surface effects. In the present study, a delamination detection approach based on equivalent von Mises strains is demonstrated for vibrating laminated (i.e., unidirectional fabric) composite plates. In this context, the governing relations of the inverse finite element method were recast according to the refined zigzag theory. Using the in situ strain measurements obtained from the surface and through the thickness of the composite shell, the inverse analysis was performed, and the strain field of the composite shell was reconstructed. The implementation of the proposed methodology is demonstrated for two numerical case studies associated with the harmonic and random vibrations of composite shells. The findings of this study show that the present damage detection method is capable of real-time monitoring of damage and providing information about the exact location, shape, and extent of the delamination damage in the vibrating composite plate. Finally, the robustness of the proposed method in response to resonance and extreme load variations is shown. MDPI 2023-09-15 /pmc/articles/PMC10535162/ /pubmed/37765982 http://dx.doi.org/10.3390/s23187926 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ganjdoust, Faraz
Kefal, Adnan
Tessler, Alexander
Delamination Detection and Localization in Vibrating Composite Plates and Shells Using the Inverse Finite Element Method
title Delamination Detection and Localization in Vibrating Composite Plates and Shells Using the Inverse Finite Element Method
title_full Delamination Detection and Localization in Vibrating Composite Plates and Shells Using the Inverse Finite Element Method
title_fullStr Delamination Detection and Localization in Vibrating Composite Plates and Shells Using the Inverse Finite Element Method
title_full_unstemmed Delamination Detection and Localization in Vibrating Composite Plates and Shells Using the Inverse Finite Element Method
title_short Delamination Detection and Localization in Vibrating Composite Plates and Shells Using the Inverse Finite Element Method
title_sort delamination detection and localization in vibrating composite plates and shells using the inverse finite element method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10535162/
https://www.ncbi.nlm.nih.gov/pubmed/37765982
http://dx.doi.org/10.3390/s23187926
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