Effects of debulk temperature on air evacuation during vacuum bag-only prepreg processing

Air removal prior to cure is critical for limiting porosity during vacuum bag-only (VBO) processing of prepregs. In this study, the effects of pre-cure dwell temperature (debulk) on air evacuation were investigated for both plain weave (PW) and unidirectional (UD) prepregs. In situ observations reve...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Wei Hu, Steven Nutt
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2020
Materias:	vacuum bag-only (vbo) prepreg heated debulk permeability air evacuation Polymers and polymer manufacture TP1080-1185 Automation T59.5
Acceso en línea:	https://doaj.org/article/949c2eac5f864d2898904724cd2b5fce
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:949c2eac5f864d2898904724cd2b5fce
record_format	dspace
spelling	oai:doaj.org-article:949c2eac5f864d2898904724cd2b5fce2021-12-02T09:41:57ZEffects of debulk temperature on air evacuation during vacuum bag-only prepreg processing2055-035910.1080/20550340.2020.1728476https://doaj.org/article/949c2eac5f864d2898904724cd2b5fce2020-01-01T00:00:00Zhttp://dx.doi.org/10.1080/20550340.2020.1728476https://doaj.org/toc/2055-0359Air removal prior to cure is critical for limiting porosity during vacuum bag-only (VBO) processing of prepregs. In this study, the effects of pre-cure dwell temperature (debulk) on air evacuation were investigated for both plain weave (PW) and unidirectional (UD) prepregs. In situ observations revealed that increasing dwell temperature promoted inter-ply air evacuation (by as much as 2x for UD prepregs). Through-thickness gas permeability increased with increasing temperature and decreased with increasing number of plies. The decrease in in-plane permeability during heated debulk was attributed to increased tow impregnation. The findings provide guidelines for cure cycle optimization. Heated debulk enhanced air evacuation in PW laminates, particularly as laminate width/thickness ratios exceed a threshold value. However, warm debulks were less effective, particularly for thicker laminates (>8 plies).Wei HuSteven NuttTaylor & Francis Grouparticlevacuum bag-only (vbo) prepregheated debulkpermeabilityair evacuationPolymers and polymer manufactureTP1080-1185AutomationT59.5ENAdvanced Manufacturing: Polymer & Composites Science, Vol 6, Iss 1, Pp 38-47 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	vacuum bag-only (vbo) prepreg heated debulk permeability air evacuation Polymers and polymer manufacture TP1080-1185 Automation T59.5
spellingShingle	vacuum bag-only (vbo) prepreg heated debulk permeability air evacuation Polymers and polymer manufacture TP1080-1185 Automation T59.5 Wei Hu Steven Nutt Effects of debulk temperature on air evacuation during vacuum bag-only prepreg processing
description	Air removal prior to cure is critical for limiting porosity during vacuum bag-only (VBO) processing of prepregs. In this study, the effects of pre-cure dwell temperature (debulk) on air evacuation were investigated for both plain weave (PW) and unidirectional (UD) prepregs. In situ observations revealed that increasing dwell temperature promoted inter-ply air evacuation (by as much as 2x for UD prepregs). Through-thickness gas permeability increased with increasing temperature and decreased with increasing number of plies. The decrease in in-plane permeability during heated debulk was attributed to increased tow impregnation. The findings provide guidelines for cure cycle optimization. Heated debulk enhanced air evacuation in PW laminates, particularly as laminate width/thickness ratios exceed a threshold value. However, warm debulks were less effective, particularly for thicker laminates (>8 plies).
format	article
author	Wei Hu Steven Nutt
author_facet	Wei Hu Steven Nutt
author_sort	Wei Hu
title	Effects of debulk temperature on air evacuation during vacuum bag-only prepreg processing
title_short	Effects of debulk temperature on air evacuation during vacuum bag-only prepreg processing
title_full	Effects of debulk temperature on air evacuation during vacuum bag-only prepreg processing
title_fullStr	Effects of debulk temperature on air evacuation during vacuum bag-only prepreg processing
title_full_unstemmed	Effects of debulk temperature on air evacuation during vacuum bag-only prepreg processing
title_sort	effects of debulk temperature on air evacuation during vacuum bag-only prepreg processing
publisher	Taylor & Francis Group
publishDate	2020
url	https://doaj.org/article/949c2eac5f864d2898904724cd2b5fce
work_keys_str_mv	AT weihu effectsofdebulktemperatureonairevacuationduringvacuumbagonlyprepregprocessing AT stevennutt effectsofdebulktemperatureonairevacuationduringvacuumbagonlyprepregprocessing
_version_	1718398077167992832

Effects of debulk temperature on air evacuation during vacuum bag-only prepreg processing

Ejemplares similares