Synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates
Thin-ply carbon fiber laminates have exhibited superior mechanical properties, including higher initiation and ultimate strength, when compared to standard thickness plies and enable greater flexibility in laminate design. However, the increased ply count in thin-ply laminates also increases the num...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Elsevier
2018
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| Online Access: | http://hdl.handle.net/1721.1/115302 https://orcid.org/0000-0001-6430-428X https://orcid.org/0000-0002-2260-2374 https://orcid.org/0000-0002-3327-3764 https://orcid.org/0000-0003-3530-5819 |
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| author | Arteiro, Albertino Borstnar, Gregor Mavrogordato, Mark N. Sinclair, Ian Spearing, S. Mark Camanho, Pedro P. Cohen, Estelle Kopp, Reed Alan Furtado Pereira da Silva, Carolina Ni, Xinchen Wardle, Brian L |
| author2 | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics |
| author_facet | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Arteiro, Albertino Borstnar, Gregor Mavrogordato, Mark N. Sinclair, Ian Spearing, S. Mark Camanho, Pedro P. Cohen, Estelle Kopp, Reed Alan Furtado Pereira da Silva, Carolina Ni, Xinchen Wardle, Brian L |
| author_sort | Arteiro, Albertino |
| collection | MIT |
| description | Thin-ply carbon fiber laminates have exhibited superior mechanical properties, including higher initiation and ultimate strength, when compared to standard thickness plies and enable greater flexibility in laminate design. However, the increased ply count in thin-ply laminates also increases the number of ply-ply interfaces, thereby increasing the number of relatively weak and delamination-prone interlaminar regions. In this study, we report the first experimental realization of aligned carbon nanotube interlaminar reinforcement of thin-ply unidirectional prepreg-based carbon fiber laminates, in a hierarchical architecture termed ‘nanostitching’. We synthesize a baseline effective standard thickness laminate using multiple thin-plies of the same orientation to create a ply block, and we find an ∼15% improvement in the interlaminar shear strength via short beam shear (SBS) testing for thin-ply nanostitched samples when compared to the baseline. This demonstrates a synergetic strength effect of nanostitching (∼5% increase) and thin-ply lamination (∼10% increase). Synchrotron-based computed tomography of post mortem SBS specimens suggests a different damage trajectory and mode of damage accumulation in nanostitched thin-ply laminates, notably the complete suppression of delaminations in the nanostitched region. Finite element predictions of damage progression highlight the complementary nature of positive thin-ply and nanostitching effects that are consistent with an ∼15% improvement in Modes I and II interlaminar fracture toughness due to the aligned carbon nanotubes at the thin-ply interfaces. Keywords: Thin-ply laminate; Carbon nanotube; Mechanical properties; Finite element analysis |
| first_indexed | 2024-09-23T10:53:19Z |
| format | Article |
| id | mit-1721.1/115302 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:53:19Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1153022022-09-30T23:45:03Z Synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates Arteiro, Albertino Borstnar, Gregor Mavrogordato, Mark N. Sinclair, Ian Spearing, S. Mark Camanho, Pedro P. Cohen, Estelle Kopp, Reed Alan Furtado Pereira da Silva, Carolina Ni, Xinchen Wardle, Brian L Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Massachusetts Institute of Technology. Department of Mechanical Engineering Estelle Kalfon-Cohen Cohen, Estelle Kopp, Reed Alan Furtado Pereira da Silva, Carolina Ni, Xinchen Wardle, Brian L Thin-ply carbon fiber laminates have exhibited superior mechanical properties, including higher initiation and ultimate strength, when compared to standard thickness plies and enable greater flexibility in laminate design. However, the increased ply count in thin-ply laminates also increases the number of ply-ply interfaces, thereby increasing the number of relatively weak and delamination-prone interlaminar regions. In this study, we report the first experimental realization of aligned carbon nanotube interlaminar reinforcement of thin-ply unidirectional prepreg-based carbon fiber laminates, in a hierarchical architecture termed ‘nanostitching’. We synthesize a baseline effective standard thickness laminate using multiple thin-plies of the same orientation to create a ply block, and we find an ∼15% improvement in the interlaminar shear strength via short beam shear (SBS) testing for thin-ply nanostitched samples when compared to the baseline. This demonstrates a synergetic strength effect of nanostitching (∼5% increase) and thin-ply lamination (∼10% increase). Synchrotron-based computed tomography of post mortem SBS specimens suggests a different damage trajectory and mode of damage accumulation in nanostitched thin-ply laminates, notably the complete suppression of delaminations in the nanostitched region. Finite element predictions of damage progression highlight the complementary nature of positive thin-ply and nanostitching effects that are consistent with an ∼15% improvement in Modes I and II interlaminar fracture toughness due to the aligned carbon nanotubes at the thin-ply interfaces. Keywords: Thin-ply laminate; Carbon nanotube; Mechanical properties; Finite element analysis 2018-05-10T19:30:06Z 2018-05-10T19:30:06Z 2018-01 2017-12 Article http://purl.org/eprint/type/JournalArticle 0266-3538 http://hdl.handle.net/1721.1/115302 Kalfon-Cohen, Estelle et al. “Synergetic Effects of Thin Plies and Aligned Carbon Nanotube Interlaminar Reinforcement in Composite Laminates.” Composites Science and Technology (January 2018) © 2018 Elsevier Ltd https://orcid.org/0000-0001-6430-428X https://orcid.org/0000-0002-2260-2374 https://orcid.org/0000-0002-3327-3764 https://orcid.org/0000-0003-3530-5819 en_US https://doi.org/10.1016/j.compscitech.2018.01.007 Composites Science and Technology Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Prof. Kalfon-Cohen |
| spellingShingle | Arteiro, Albertino Borstnar, Gregor Mavrogordato, Mark N. Sinclair, Ian Spearing, S. Mark Camanho, Pedro P. Cohen, Estelle Kopp, Reed Alan Furtado Pereira da Silva, Carolina Ni, Xinchen Wardle, Brian L Synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates |
| title | Synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates |
| title_full | Synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates |
| title_fullStr | Synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates |
| title_full_unstemmed | Synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates |
| title_short | Synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates |
| title_sort | synergetic effects of thin plies and aligned carbon nanotube interlaminar reinforcement in composite laminates |
| url | http://hdl.handle.net/1721.1/115302 https://orcid.org/0000-0001-6430-428X https://orcid.org/0000-0002-2260-2374 https://orcid.org/0000-0002-3327-3764 https://orcid.org/0000-0003-3530-5819 |
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