Permeability of co-cured honeycomb sandwich skins: effect of gas transport during processing

Potential links between pressure conditions during co-cure of honeycomb sandwich panels, the extent of gas flow through facesheet and bond-line, and the level of permeability in the cured skin were evaluated. Half-sandwich structures comprised of fiber-reinforced polymer facesheets, film adhesive, a...

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Autores principales:	Trisha Palit, Timotei Centea, Mark Anders, Daniel Zebrine, Steven Nutt
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2020
Materias:	co-cure honeycomb prepreg permeability sandwich structures composites manufacturing Polymers and polymer manufacture TP1080-1185 Automation T59.5
Acceso en línea:	https://doaj.org/article/e6481093ec0348a1b625641ab337dcc2
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spelling	oai:doaj.org-article:e6481093ec0348a1b625641ab337dcc22021-12-02T11:03:50ZPermeability of co-cured honeycomb sandwich skins: effect of gas transport during processing2055-035910.1080/20550340.2020.1802685https://doaj.org/article/e6481093ec0348a1b625641ab337dcc22020-08-01T00:00:00Zhttp://dx.doi.org/10.1080/20550340.2020.1802685https://doaj.org/toc/2055-0359Potential links between pressure conditions during co-cure of honeycomb sandwich panels, the extent of gas flow through facesheet and bond-line, and the level of permeability in the cured skin were evaluated. Half-sandwich structures comprised of fiber-reinforced polymer facesheets, film adhesive, and core were fabricated using a custom-built lab fixture. Autoclave, bag, and core pressures were varied to produce controlled, constant pressure differences during cure, and the resulting skins were tested for permeability using a fixture constructed to measure gas flow rate across the skins and to locate gas flow pathways. Facesheet cross-sections were analyzed to evaluate porosity. Porosity and the number of gas flow pathways were correlated to permeability, but significant gas flow was possible without high void content or with few channels, as pressure differentials led to complex variations in permeability. Overall, the study provides new insights into gas transport during composites processing and manufacturing, and the results provide guidance for modifying manufacturing processes to ensure part quality.Trisha PalitTimotei CenteaMark AndersDaniel ZebrineSteven NuttTaylor & Francis Grouparticleco-curehoneycombprepregpermeabilitysandwich structurescomposites manufacturingPolymers and polymer manufactureTP1080-1185AutomationT59.5ENAdvanced Manufacturing: Polymer & Composites Science, Vol 6, Iss 3, Pp 142-153 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	co-cure honeycomb prepreg permeability sandwich structures composites manufacturing Polymers and polymer manufacture TP1080-1185 Automation T59.5
spellingShingle	co-cure honeycomb prepreg permeability sandwich structures composites manufacturing Polymers and polymer manufacture TP1080-1185 Automation T59.5 Trisha Palit Timotei Centea Mark Anders Daniel Zebrine Steven Nutt Permeability of co-cured honeycomb sandwich skins: effect of gas transport during processing
description	Potential links between pressure conditions during co-cure of honeycomb sandwich panels, the extent of gas flow through facesheet and bond-line, and the level of permeability in the cured skin were evaluated. Half-sandwich structures comprised of fiber-reinforced polymer facesheets, film adhesive, and core were fabricated using a custom-built lab fixture. Autoclave, bag, and core pressures were varied to produce controlled, constant pressure differences during cure, and the resulting skins were tested for permeability using a fixture constructed to measure gas flow rate across the skins and to locate gas flow pathways. Facesheet cross-sections were analyzed to evaluate porosity. Porosity and the number of gas flow pathways were correlated to permeability, but significant gas flow was possible without high void content or with few channels, as pressure differentials led to complex variations in permeability. Overall, the study provides new insights into gas transport during composites processing and manufacturing, and the results provide guidance for modifying manufacturing processes to ensure part quality.
format	article
author	Trisha Palit Timotei Centea Mark Anders Daniel Zebrine Steven Nutt
author_facet	Trisha Palit Timotei Centea Mark Anders Daniel Zebrine Steven Nutt
author_sort	Trisha Palit
title	Permeability of co-cured honeycomb sandwich skins: effect of gas transport during processing
title_short	Permeability of co-cured honeycomb sandwich skins: effect of gas transport during processing
title_full	Permeability of co-cured honeycomb sandwich skins: effect of gas transport during processing
title_fullStr	Permeability of co-cured honeycomb sandwich skins: effect of gas transport during processing
title_full_unstemmed	Permeability of co-cured honeycomb sandwich skins: effect of gas transport during processing
title_sort	permeability of co-cured honeycomb sandwich skins: effect of gas transport during processing
publisher	Taylor & Francis Group
publishDate	2020
url	https://doaj.org/article/e6481093ec0348a1b625641ab337dcc2
work_keys_str_mv	AT trishapalit permeabilityofcocuredhoneycombsandwichskinseffectofgastransportduringprocessing AT timoteicentea permeabilityofcocuredhoneycombsandwichskinseffectofgastransportduringprocessing AT markanders permeabilityofcocuredhoneycombsandwichskinseffectofgastransportduringprocessing AT danielzebrine permeabilityofcocuredhoneycombsandwichskinseffectofgastransportduringprocessing AT stevennutt permeabilityofcocuredhoneycombsandwichskinseffectofgastransportduringprocessing
_version_	1718396325194629120

Permeability of co-cured honeycomb sandwich skins: effect of gas transport during processing

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