Effect of hot needle punching on bending and inter-laminar characteristics of CF/PA6 composite

The purpose of this study is to investigate how affect the hot needle punching on bending strength and inter-laminar fracture toughness of CFRTP. Four types of needle in which tip shape were different was used to investigate the effect of needle shape on bending strength and interlaminar fracture to...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kiyotaka OBUNAI, Tadao FUKUTA, Koichi OZAKI, Yoshifumi MORIKAWA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	cfrtp needle punch dcb test bending strength mode i fracture toughness Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/2accd9d097a144ff9b032126227e06f7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2accd9d097a144ff9b032126227e06f7
record_format	dspace
spelling	oai:doaj.org-article:2accd9d097a144ff9b032126227e06f72021-11-26T06:53:45ZEffect of hot needle punching on bending and inter-laminar characteristics of CF/PA6 composite2187-974510.1299/mej.15-00610https://doaj.org/article/2accd9d097a144ff9b032126227e06f72016-02-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/4/3_15-00610/_pdf/-char/enhttps://doaj.org/toc/2187-9745The purpose of this study is to investigate how affect the hot needle punching on bending strength and inter-laminar fracture toughness of CFRTP. Four types of needle in which tip shape were different was used to investigate the effect of needle shape on bending strength and interlaminar fracture toughness of CFRTP. CFRTP specimen was heated to soften the matrix of PA6, and then needle punching was conducted to specific number of times per unit area. The bending characteristics and interlaminar fracture toughness of CFRTP were evaluated by four point bending test and double cantilever beam (DCB) test, respectively. Test results showed that when punching was done using a needle with a notch at the tip, it resulted in the realignment of the yarn fibers along the out-plane direction of the punched specimen. It also led to the breakage of the fibers, owing to excessive bending. Moreover, due to the high viscosity of the matrix resin, the void was generated when the needle was pulled out from the composite. The interlaminar fracture toughness of the CFRTP specimens improved when punching was performed at stab density of 12 cm-2 or more. Finally this paper revealed that the mode I fracture toughness of the needle-punched CFRTP specimens is dependent on both of crack bridging of the realigned fiber and pin-like resin structure.Kiyotaka OBUNAITadao FUKUTAKoichi OZAKIYoshifumi MORIKAWAThe Japan Society of Mechanical Engineersarticlecfrtpneedle punchdcb testbending strengthmode i fracture toughnessMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 4, Pp 15-00610-15-00610 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	cfrtp needle punch dcb test bending strength mode i fracture toughness Mechanical engineering and machinery TJ1-1570
spellingShingle	cfrtp needle punch dcb test bending strength mode i fracture toughness Mechanical engineering and machinery TJ1-1570 Kiyotaka OBUNAI Tadao FUKUTA Koichi OZAKI Yoshifumi MORIKAWA Effect of hot needle punching on bending and inter-laminar characteristics of CF/PA6 composite
description	The purpose of this study is to investigate how affect the hot needle punching on bending strength and inter-laminar fracture toughness of CFRTP. Four types of needle in which tip shape were different was used to investigate the effect of needle shape on bending strength and interlaminar fracture toughness of CFRTP. CFRTP specimen was heated to soften the matrix of PA6, and then needle punching was conducted to specific number of times per unit area. The bending characteristics and interlaminar fracture toughness of CFRTP were evaluated by four point bending test and double cantilever beam (DCB) test, respectively. Test results showed that when punching was done using a needle with a notch at the tip, it resulted in the realignment of the yarn fibers along the out-plane direction of the punched specimen. It also led to the breakage of the fibers, owing to excessive bending. Moreover, due to the high viscosity of the matrix resin, the void was generated when the needle was pulled out from the composite. The interlaminar fracture toughness of the CFRTP specimens improved when punching was performed at stab density of 12 cm-2 or more. Finally this paper revealed that the mode I fracture toughness of the needle-punched CFRTP specimens is dependent on both of crack bridging of the realigned fiber and pin-like resin structure.
format	article
author	Kiyotaka OBUNAI Tadao FUKUTA Koichi OZAKI Yoshifumi MORIKAWA
author_facet	Kiyotaka OBUNAI Tadao FUKUTA Koichi OZAKI Yoshifumi MORIKAWA
author_sort	Kiyotaka OBUNAI
title	Effect of hot needle punching on bending and inter-laminar characteristics of CF/PA6 composite
title_short	Effect of hot needle punching on bending and inter-laminar characteristics of CF/PA6 composite
title_full	Effect of hot needle punching on bending and inter-laminar characteristics of CF/PA6 composite
title_fullStr	Effect of hot needle punching on bending and inter-laminar characteristics of CF/PA6 composite
title_full_unstemmed	Effect of hot needle punching on bending and inter-laminar characteristics of CF/PA6 composite
title_sort	effect of hot needle punching on bending and inter-laminar characteristics of cf/pa6 composite
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/2accd9d097a144ff9b032126227e06f7
work_keys_str_mv	AT kiyotakaobunai effectofhotneedlepunchingonbendingandinterlaminarcharacteristicsofcfpa6composite AT tadaofukuta effectofhotneedlepunchingonbendingandinterlaminarcharacteristicsofcfpa6composite AT koichiozaki effectofhotneedlepunchingonbendingandinterlaminarcharacteristicsofcfpa6composite AT yoshifumimorikawa effectofhotneedlepunchingonbendingandinterlaminarcharacteristicsofcfpa6composite
_version_	1718409707991859200

Effect of hot needle punching on bending and inter-laminar characteristics of CF/PA6 composite

Ejemplares similares