Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Chen, Hui, Yu, Folian, Wang, Bing, Zhao, Chenmin, Chen, Xiayu, Nsengiyumva, Walter, Zhong, Shuncong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
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
_version_ 1784876210650611712
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
work_keys_str_mv AT chenhui elasticfibreprestressingmechanicswithinapolymericmatrixcomposite
AT yufolian elasticfibreprestressingmechanicswithinapolymericmatrixcomposite
AT wangbing elasticfibreprestressingmechanicswithinapolymericmatrixcomposite
AT zhaochenmin elasticfibreprestressingmechanicswithinapolymericmatrixcomposite
AT chenxiayu elasticfibreprestressingmechanicswithinapolymericmatrixcomposite
AT nsengiyumvawalter elasticfibreprestressingmechanicswithinapolymericmatrixcomposite
AT zhongshuncong elasticfibreprestressingmechanicswithinapolymericmatrixcomposite