Delamination Assessment in Composite Laminates through Local Impulse Excitation Technique (IET)
This paper deals with an innovative nondestructive technique for composites (local-IET), which is based on the Impulse Excitation Technique (IET) and, in the presence of damage, assesses the degradation of the elastic properties of a local region of the laminate by reversibly clamping its boundaries...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/7/3023 |
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| author | Carlo Boursier Niutta Pierpaolo Padula Andrea Tridello Marco Boccaccio Francesco Acerra Davide S. Paolino |
| author_facet | Carlo Boursier Niutta Pierpaolo Padula Andrea Tridello Marco Boccaccio Francesco Acerra Davide S. Paolino |
| author_sort | Carlo Boursier Niutta |
| collection | DOAJ |
| description | This paper deals with an innovative nondestructive technique for composites (local-IET), which is based on the Impulse Excitation Technique (IET) and, in the presence of damage, assesses the degradation of the elastic properties of a local region of the laminate by reversibly clamping its boundaries. In this paper, a numerical analysis of the sensitivity of the local-IET to the delamination damage mechanism is conducted. Firstly, a Finite Element (FE) model of the local-IET test is determined through experimental investigations on undamaged composite laminates, which cover a wide range and are made of glass or carbon fibers, through resin infusion or pre-preg consolidation and with unidirectional or fabric textures. The vibrational response of a glass fiber composite with local delamination is then assessed with the local-IET. By modeling the delamination in the simulation environment, the effectiveness of the FE model in replicating the vibrational response, even in the presence of delamination, is shown through a comparison with the experimental results. Finally, the FE model is exploited to perform a sensitivity analysis, showing that the technique is able to detect the presence of delamination. |
| first_indexed | 2024-04-24T10:49:10Z |
| format | Article |
| id | doaj.art-a9491c0b4d1a47cca05afb48dbb78c18 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-24T10:49:10Z |
| publishDate | 2024-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a9491c0b4d1a47cca05afb48dbb78c182024-04-12T13:15:29ZengMDPI AGApplied Sciences2076-34172024-04-01147302310.3390/app14073023Delamination Assessment in Composite Laminates through Local Impulse Excitation Technique (IET)Carlo Boursier Niutta0Pierpaolo Padula1Andrea Tridello2Marco Boccaccio3Francesco Acerra4Davide S. Paolino5Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, ItalyDepartment of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, ItalyDepartment of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, ItalyLeonardo Labs, OGR Tech, 10138 Turin, ItalyLeonardo Aircraft Division, 80038 Pomigliano d’Arco, ItalyDepartment of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Turin, ItalyThis paper deals with an innovative nondestructive technique for composites (local-IET), which is based on the Impulse Excitation Technique (IET) and, in the presence of damage, assesses the degradation of the elastic properties of a local region of the laminate by reversibly clamping its boundaries. In this paper, a numerical analysis of the sensitivity of the local-IET to the delamination damage mechanism is conducted. Firstly, a Finite Element (FE) model of the local-IET test is determined through experimental investigations on undamaged composite laminates, which cover a wide range and are made of glass or carbon fibers, through resin infusion or pre-preg consolidation and with unidirectional or fabric textures. The vibrational response of a glass fiber composite with local delamination is then assessed with the local-IET. By modeling the delamination in the simulation environment, the effectiveness of the FE model in replicating the vibrational response, even in the presence of delamination, is shown through a comparison with the experimental results. Finally, the FE model is exploited to perform a sensitivity analysis, showing that the technique is able to detect the presence of delamination.https://www.mdpi.com/2076-3417/14/7/3023laminated compositesdamage assessmentdelaminationlocal Impulse Excitation Technique |
| spellingShingle | Carlo Boursier Niutta Pierpaolo Padula Andrea Tridello Marco Boccaccio Francesco Acerra Davide S. Paolino Delamination Assessment in Composite Laminates through Local Impulse Excitation Technique (IET) Applied Sciences laminated composites damage assessment delamination local Impulse Excitation Technique |
| title | Delamination Assessment in Composite Laminates through Local Impulse Excitation Technique (IET) |
| title_full | Delamination Assessment in Composite Laminates through Local Impulse Excitation Technique (IET) |
| title_fullStr | Delamination Assessment in Composite Laminates through Local Impulse Excitation Technique (IET) |
| title_full_unstemmed | Delamination Assessment in Composite Laminates through Local Impulse Excitation Technique (IET) |
| title_short | Delamination Assessment in Composite Laminates through Local Impulse Excitation Technique (IET) |
| title_sort | delamination assessment in composite laminates through local impulse excitation technique iet |
| topic | laminated composites damage assessment delamination local Impulse Excitation Technique |
| url | https://www.mdpi.com/2076-3417/14/7/3023 |
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