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Elastic Fibre Prestressing Mechanics within a Polymeric Matrix Composite
The elastic fibre prestressing (EFP) technique has been developed to balance the thermal residual stress generated during curing of a polymeric composite. The continuous fibre reinforcements are prestressed and then impregnated into a polymeric matrix, where the prestress load is only removed after...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9866914/ https://www.ncbi.nlm.nih.gov/pubmed/36679310 http://dx.doi.org/10.3390/polym15020431 |
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author | Chen, Hui Yu, Folian Wang, Bing Zhao, Chenmin Chen, Xiayu Nsengiyumva, Walter Zhong, Shuncong |
author_facet | Chen, Hui Yu, Folian Wang, Bing Zhao, Chenmin Chen, Xiayu Nsengiyumva, Walter Zhong, Shuncong |
author_sort | Chen, Hui |
collection | PubMed |
description | The elastic fibre prestressing (EFP) technique has been developed to balance the thermal residual stress generated during curing of a polymeric composite. The continuous fibre reinforcements are prestressed and then impregnated into a polymeric matrix, where the prestress load is only removed after the resin is fully cured in order to produce an elastically prestressed polymeric matrix composite (EPPMC). Although the EFP is active in improving the static mechanical performance of a composite, its mechanics on dynamic mechanical performance and viscoelasticity of a composite is still limited. Here, we established a theoretical model in order to decouple the EFP principle, aiming to better analyse the underlying mechanics. A bespoke fibre prestressing rig was then developed to apply tension on a unidirectional carbon-fibre-reinforced epoxy prepreg to produce EPPMC samples with various EFP levels. The effects of EFP were then investigated by carrying out both static and dynamic mechanical testing, as well as the viscoelastic creep performance. It was found that there is an optimal level of EFP in order to maximise the prestress benefits, whilst the EFP is detrimental to the fibre/matrix interface. The EFP mechanisms are then proposed based on these observations to reveal the in-plane stress evolutions within a polymeric composite. |
format | Online Article Text |
id | pubmed-9866914 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98669142023-01-22 Elastic Fibre Prestressing Mechanics within a Polymeric Matrix Composite Chen, Hui Yu, Folian Wang, Bing Zhao, Chenmin Chen, Xiayu Nsengiyumva, Walter Zhong, Shuncong Polymers (Basel) Article The elastic fibre prestressing (EFP) technique has been developed to balance the thermal residual stress generated during curing of a polymeric composite. The continuous fibre reinforcements are prestressed and then impregnated into a polymeric matrix, where the prestress load is only removed after the resin is fully cured in order to produce an elastically prestressed polymeric matrix composite (EPPMC). Although the EFP is active in improving the static mechanical performance of a composite, its mechanics on dynamic mechanical performance and viscoelasticity of a composite is still limited. Here, we established a theoretical model in order to decouple the EFP principle, aiming to better analyse the underlying mechanics. A bespoke fibre prestressing rig was then developed to apply tension on a unidirectional carbon-fibre-reinforced epoxy prepreg to produce EPPMC samples with various EFP levels. The effects of EFP were then investigated by carrying out both static and dynamic mechanical testing, as well as the viscoelastic creep performance. It was found that there is an optimal level of EFP in order to maximise the prestress benefits, whilst the EFP is detrimental to the fibre/matrix interface. The EFP mechanisms are then proposed based on these observations to reveal the in-plane stress evolutions within a polymeric composite. MDPI 2023-01-13 /pmc/articles/PMC9866914/ /pubmed/36679310 http://dx.doi.org/10.3390/polym15020431 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 Chen, Hui Yu, Folian Wang, Bing Zhao, Chenmin Chen, Xiayu Nsengiyumva, Walter Zhong, Shuncong Elastic Fibre Prestressing Mechanics within a Polymeric Matrix Composite |
title | Elastic Fibre Prestressing Mechanics within a Polymeric Matrix Composite |
title_full | Elastic Fibre Prestressing Mechanics within a Polymeric Matrix Composite |
title_fullStr | Elastic Fibre Prestressing Mechanics within a Polymeric Matrix Composite |
title_full_unstemmed | Elastic Fibre Prestressing Mechanics within a Polymeric Matrix Composite |
title_short | Elastic Fibre Prestressing Mechanics within a Polymeric Matrix Composite |
title_sort | elastic fibre prestressing mechanics within a polymeric matrix composite |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9866914/ https://www.ncbi.nlm.nih.gov/pubmed/36679310 http://dx.doi.org/10.3390/polym15020431 |
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