Design and application of discontinuous resin distribution patterns for semi-pregs

Vacuum-bag-only (VBO) prepregs fabricated with discontinuous resin (semi-pregs) on a unidirectional fiber bed reportedly exhibit high through-thickness permeability and yield high-quality laminates, even under adverse process conditions, such as poor vacuum or long out-times. In this work, semi-preg...

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Autores principales:	Sarah G. K. Schechter, Lessa K. Grunenfelder, Steven R. Nutt
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2020
Materias:	prepreg polymer matrix composites porosity defects out of autoclave vacuum bag only Polymers and polymer manufacture TP1080-1185 Automation T59.5
Acceso en línea:	https://doaj.org/article/ef6d21c8214a429f9751e04c56062c67
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spelling	oai:doaj.org-article:ef6d21c8214a429f9751e04c56062c672021-12-02T10:23:58ZDesign and application of discontinuous resin distribution patterns for semi-pregs2055-035910.1080/20550340.2020.1736864https://doaj.org/article/ef6d21c8214a429f9751e04c56062c672020-04-01T00:00:00Zhttp://dx.doi.org/10.1080/20550340.2020.1736864https://doaj.org/toc/2055-0359Vacuum-bag-only (VBO) prepregs fabricated with discontinuous resin (semi-pregs) on a unidirectional fiber bed reportedly exhibit high through-thickness permeability and yield high-quality laminates, even under adverse process conditions, such as poor vacuum or long out-times. In this work, semi-pregs were fabricated using fiber beds of various weaves, fiber types, and areal weights (200–670 GSM). Flat and curved laminates were produced and characterized, confirming that porosity-free parts can be manufactured from a range of constituent materials using VBO semi-pregs. Contoured laminates were produced with negligible porosity, although a slight increase in bulk factor of prepreg plies was observed (Δ∼0.1). In addition, design considerations and limitations for the fabrication of semi-pregs were presented. The findings demonstrate that polymer film dewetting can be used effectively to produce semi-pregs that yield porosity-free laminates via VBO processing, imparting robustness to out-of-autoclave cure of prepreg laminates.Sarah G. K. SchechterLessa K. GrunenfelderSteven R. NuttTaylor & Francis Grouparticleprepregpolymer matrix compositesporositydefectsout of autoclavevacuum bag onlyPolymers and polymer manufactureTP1080-1185AutomationT59.5ENAdvanced Manufacturing: Polymer & Composites Science, Vol 6, Iss 2, Pp 72-85 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	prepreg polymer matrix composites porosity defects out of autoclave vacuum bag only Polymers and polymer manufacture TP1080-1185 Automation T59.5
spellingShingle	prepreg polymer matrix composites porosity defects out of autoclave vacuum bag only Polymers and polymer manufacture TP1080-1185 Automation T59.5 Sarah G. K. Schechter Lessa K. Grunenfelder Steven R. Nutt Design and application of discontinuous resin distribution patterns for semi-pregs
description	Vacuum-bag-only (VBO) prepregs fabricated with discontinuous resin (semi-pregs) on a unidirectional fiber bed reportedly exhibit high through-thickness permeability and yield high-quality laminates, even under adverse process conditions, such as poor vacuum or long out-times. In this work, semi-pregs were fabricated using fiber beds of various weaves, fiber types, and areal weights (200–670 GSM). Flat and curved laminates were produced and characterized, confirming that porosity-free parts can be manufactured from a range of constituent materials using VBO semi-pregs. Contoured laminates were produced with negligible porosity, although a slight increase in bulk factor of prepreg plies was observed (Δ∼0.1). In addition, design considerations and limitations for the fabrication of semi-pregs were presented. The findings demonstrate that polymer film dewetting can be used effectively to produce semi-pregs that yield porosity-free laminates via VBO processing, imparting robustness to out-of-autoclave cure of prepreg laminates.
format	article
author	Sarah G. K. Schechter Lessa K. Grunenfelder Steven R. Nutt
author_facet	Sarah G. K. Schechter Lessa K. Grunenfelder Steven R. Nutt
author_sort	Sarah G. K. Schechter
title	Design and application of discontinuous resin distribution patterns for semi-pregs
title_short	Design and application of discontinuous resin distribution patterns for semi-pregs
title_full	Design and application of discontinuous resin distribution patterns for semi-pregs
title_fullStr	Design and application of discontinuous resin distribution patterns for semi-pregs
title_full_unstemmed	Design and application of discontinuous resin distribution patterns for semi-pregs
title_sort	design and application of discontinuous resin distribution patterns for semi-pregs
publisher	Taylor & Francis Group
publishDate	2020
url	https://doaj.org/article/ef6d21c8214a429f9751e04c56062c67
work_keys_str_mv	AT sarahgkschechter designandapplicationofdiscontinuousresindistributionpatternsforsemipregs AT lessakgrunenfelder designandapplicationofdiscontinuousresindistributionpatternsforsemipregs AT stevenrnutt designandapplicationofdiscontinuousresindistributionpatternsforsemipregs
_version_	1718397329529110528

Design and application of discontinuous resin distribution patterns for semi-pregs

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