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Fragmentation of Beaded Fibres in a Composite
The fibre–matrix interface plays an important role in the overall mechanical behaviour of a fibre-reinforced composite, but the classical approach to improving the interface through chemical sizing is bounded by the materials’ properties. By contrast, structural and/or geometrical modification of th...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8839112/ https://www.ncbi.nlm.nih.gov/pubmed/35160836 http://dx.doi.org/10.3390/ma15030890 |
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author | Rodricks, Carol Winnifred Greenfeld, Israel Fiedler, Bodo Wagner, Hanoch Daniel |
author_facet | Rodricks, Carol Winnifred Greenfeld, Israel Fiedler, Bodo Wagner, Hanoch Daniel |
author_sort | Rodricks, Carol Winnifred |
collection | PubMed |
description | The fibre–matrix interface plays an important role in the overall mechanical behaviour of a fibre-reinforced composite, but the classical approach to improving the interface through chemical sizing is bounded by the materials’ properties. By contrast, structural and/or geometrical modification of the interface may provide mechanical interlocking and have wider possibilities and benefits. Here we investigate the introduction of polymer beads along the interface of a fibre and validate their contribution by a single fibre fragmentation test. Using glass fibres and the same epoxy system for both matrix and beads, an increase of 17.5% is observed in the interfacial shear strength of the beaded fibres compared to fibres with no polymer beads. This increase should lead to a similar improvement in the strength and toughness of a beaded fibre composite when short fibres are used. The beads were also seen to stabilise the fragmentation process of a fibre by reducing the scatter in fragment density at a given strain. A case could also be made for a critical beads number—4 beads in our experimental system—to describe interfacial shear strength, analogous to a critical length used in fibre composites. |
format | Online Article Text |
id | pubmed-8839112 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-88391122022-02-13 Fragmentation of Beaded Fibres in a Composite Rodricks, Carol Winnifred Greenfeld, Israel Fiedler, Bodo Wagner, Hanoch Daniel Materials (Basel) Article The fibre–matrix interface plays an important role in the overall mechanical behaviour of a fibre-reinforced composite, but the classical approach to improving the interface through chemical sizing is bounded by the materials’ properties. By contrast, structural and/or geometrical modification of the interface may provide mechanical interlocking and have wider possibilities and benefits. Here we investigate the introduction of polymer beads along the interface of a fibre and validate their contribution by a single fibre fragmentation test. Using glass fibres and the same epoxy system for both matrix and beads, an increase of 17.5% is observed in the interfacial shear strength of the beaded fibres compared to fibres with no polymer beads. This increase should lead to a similar improvement in the strength and toughness of a beaded fibre composite when short fibres are used. The beads were also seen to stabilise the fragmentation process of a fibre by reducing the scatter in fragment density at a given strain. A case could also be made for a critical beads number—4 beads in our experimental system—to describe interfacial shear strength, analogous to a critical length used in fibre composites. MDPI 2022-01-24 /pmc/articles/PMC8839112/ /pubmed/35160836 http://dx.doi.org/10.3390/ma15030890 Text en © 2022 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 Rodricks, Carol Winnifred Greenfeld, Israel Fiedler, Bodo Wagner, Hanoch Daniel Fragmentation of Beaded Fibres in a Composite |
title | Fragmentation of Beaded Fibres in a Composite |
title_full | Fragmentation of Beaded Fibres in a Composite |
title_fullStr | Fragmentation of Beaded Fibres in a Composite |
title_full_unstemmed | Fragmentation of Beaded Fibres in a Composite |
title_short | Fragmentation of Beaded Fibres in a Composite |
title_sort | fragmentation of beaded fibres in a composite |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8839112/ https://www.ncbi.nlm.nih.gov/pubmed/35160836 http://dx.doi.org/10.3390/ma15030890 |
work_keys_str_mv | AT rodrickscarolwinnifred fragmentationofbeadedfibresinacomposite AT greenfeldisrael fragmentationofbeadedfibresinacomposite AT fiedlerbodo fragmentationofbeadedfibresinacomposite AT wagnerhanochdaniel fragmentationofbeadedfibresinacomposite |