Delamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites

Carbon-fiber-reinforced composites with layer stacking structures are sensitive to delamination crack. To improve the interlaminar properties and further explore the capability of in situ damage monitoring of the laminate, CCF300 and CCF800 carbon fiber pins were selected to fabricate the z-pinned c...

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Autores principales:	Che Zhe, Wang Han, Wang Shaokai, Gu Yizhuo, Li Min
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	z-pin composite interlaminar fracture toughness in situ damage monitoring Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/69538de112484a2a9d8f288f5b58a944
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spelling	oai:doaj.org-article:69538de112484a2a9d8f288f5b58a9442021-12-05T14:11:03ZDelamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites2191-035910.1515/secm-2021-0041https://doaj.org/article/69538de112484a2a9d8f288f5b58a9442021-07-01T00:00:00Zhttps://doi.org/10.1515/secm-2021-0041https://doaj.org/toc/2191-0359Carbon-fiber-reinforced composites with layer stacking structures are sensitive to delamination crack. To improve the interlaminar properties and further explore the capability of in situ damage monitoring of the laminate, CCF300 and CCF800 carbon fiber pins were selected to fabricate the z-pinned composites. Compared with the control sample, the G IC values of CCF300 and CCF800 z-pinned composites are increased by 398 and 378%, respectively. This indicates that the delamination resistance improvement of the laminates is dominated by the z-pin debonding and pull-outs. The electrical resistance of the laminates was utilized to in situ monitor the crack propagation within the composite laminate. The results show that the presence of the z-pins enhances the sensitivity of damage detection. The ΔR/R 0 of CCF800 z-pinned composite is nearly three times that of the control sample at the moment the crack length reaches 110 mm. Crack length–displacement curves were obtained according to the relationship between ΔR and Δa, which clearly displayed the steady or stick-slip crack growth of the laminates with or without z-pins, respectively. Visualization of the crack growth process can provide a novel method for the delamination failure analysis of the composite.Che ZheWang HanWang ShaokaiGu YizhuoLi MinDe Gruyterarticlez-pin compositeinterlaminar fracture toughnessin situ damage monitoringMaterials of engineering and construction. Mechanics of materialsTA401-492ENScience and Engineering of Composite Materials, Vol 28, Iss 1, Pp 415-425 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	z-pin composite interlaminar fracture toughness in situ damage monitoring Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	z-pin composite interlaminar fracture toughness in situ damage monitoring Materials of engineering and construction. Mechanics of materials TA401-492 Che Zhe Wang Han Wang Shaokai Gu Yizhuo Li Min Delamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites
description	Carbon-fiber-reinforced composites with layer stacking structures are sensitive to delamination crack. To improve the interlaminar properties and further explore the capability of in situ damage monitoring of the laminate, CCF300 and CCF800 carbon fiber pins were selected to fabricate the z-pinned composites. Compared with the control sample, the G IC values of CCF300 and CCF800 z-pinned composites are increased by 398 and 378%, respectively. This indicates that the delamination resistance improvement of the laminates is dominated by the z-pin debonding and pull-outs. The electrical resistance of the laminates was utilized to in situ monitor the crack propagation within the composite laminate. The results show that the presence of the z-pins enhances the sensitivity of damage detection. The ΔR/R 0 of CCF800 z-pinned composite is nearly three times that of the control sample at the moment the crack length reaches 110 mm. Crack length–displacement curves were obtained according to the relationship between ΔR and Δa, which clearly displayed the steady or stick-slip crack growth of the laminates with or without z-pins, respectively. Visualization of the crack growth process can provide a novel method for the delamination failure analysis of the composite.
format	article
author	Che Zhe Wang Han Wang Shaokai Gu Yizhuo Li Min
author_facet	Che Zhe Wang Han Wang Shaokai Gu Yizhuo Li Min
author_sort	Che Zhe
title	Delamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites
title_short	Delamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites
title_full	Delamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites
title_fullStr	Delamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites
title_full_unstemmed	Delamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites
title_sort	delamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/69538de112484a2a9d8f288f5b58a944
work_keys_str_mv	AT chezhe delaminationpropertiesandinsitudamagemonitoringofzpinnedcarbonfiberepoxycomposites AT wanghan delaminationpropertiesandinsitudamagemonitoringofzpinnedcarbonfiberepoxycomposites AT wangshaokai delaminationpropertiesandinsitudamagemonitoringofzpinnedcarbonfiberepoxycomposites AT guyizhuo delaminationpropertiesandinsitudamagemonitoringofzpinnedcarbonfiberepoxycomposites AT limin delaminationpropertiesandinsitudamagemonitoringofzpinnedcarbonfiberepoxycomposites
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Delamination properties and in situ damage monitoring of z-pinned carbon fiber/epoxy composites

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