Improved Mode i fracture resistance of CFRP composites by reinforcing epoxy matrix with recycled short milled carbon fibre

Sagar T. Cholake; Grainne Moran; Bill Joe; Yu Bai; R. K. Singh Raman; X. L. Zhao; Sami Rizkalla; Sri Bandyopadhyay

doi:10.1016/j.conbuildmat.2016.02.039

Improved Mode i fracture resistance of CFRP composites by reinforcing epoxy matrix with recycled short milled carbon fibre

Sagar T. Cholake, Grainne Moran, Bill Joe, Yu Bai, R. K. Singh Raman, X. L. Zhao, Sami Rizkalla, Sri Bandyopadhyay

Research output: Journal article publication › Journal article › Academic research › peer-review

49 Citations (Scopus)

Abstract

This paper proves that incorporation of recycled short milled carbon fibre (SMCF) in epoxy resin can lead to the generation of significantly tougher carbon fibre reinforced polymer (CFRP) systems in a cost effective manner for infrastructural applications. Structural epoxy resin is modified by adding 5 and 10 wt.% of SMCF particles and the 'fracture toughness' of the modified matrix (GICM) is observed to be increased by 300% and 700% respectively. Subsequently, the SMCF modified epoxy resins were used to fabricate unidirectional carbon fibre reinforced laminates and tested under Mode I crack opening. The SMCF reinforcement showed 50% and 64% improvement in the laminates fracture toughness (GICC) after adding 5% and 10% SMCF by wt., respectively. Scanning electron microscope images of the fracture surface highlight improved debonding and pull-out mechanisms contributing to the additional fracture toughness, and at the same time there was no evidence of fibre clustering.

Original language	English
Pages (from-to)	399-407
Number of pages	9
Journal	Construction and Building Materials
Volume	111
DOIs	https://doi.org/10.1016/j.conbuildmat.2016.02.039
Publication status	Published - 15 May 2016
Externally published	Yes

Keywords

Epoxy
Fracture toughness
Milled carbon fibre
Particulate reinforcement

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

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10.1016/j.conbuildmat.2016.02.039

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title = "Improved Mode i fracture resistance of CFRP composites by reinforcing epoxy matrix with recycled short milled carbon fibre",

abstract = "This paper proves that incorporation of recycled short milled carbon fibre (SMCF) in epoxy resin can lead to the generation of significantly tougher carbon fibre reinforced polymer (CFRP) systems in a cost effective manner for infrastructural applications. Structural epoxy resin is modified by adding 5 and 10 wt.% of SMCF particles and the 'fracture toughness' of the modified matrix (GICM) is observed to be increased by 300% and 700% respectively. Subsequently, the SMCF modified epoxy resins were used to fabricate unidirectional carbon fibre reinforced laminates and tested under Mode I crack opening. The SMCF reinforcement showed 50% and 64% improvement in the laminates fracture toughness (GICC) after adding 5% and 10% SMCF by wt., respectively. Scanning electron microscope images of the fracture surface highlight improved debonding and pull-out mechanisms contributing to the additional fracture toughness, and at the same time there was no evidence of fibre clustering.",

keywords = "Epoxy, Fracture toughness, Milled carbon fibre, Particulate reinforcement",

author = "Cholake, {Sagar T.} and Grainne Moran and Bill Joe and Yu Bai and {Singh Raman}, {R. K.} and Zhao, {X. L.} and Sami Rizkalla and Sri Bandyopadhyay",

note = "Funding Information: This research is sponsored by the Australian Research Council through the ARC Discovery Scheme under the project DP120101708 involving UNSW Australia , Monash University Australia and North Carolina State University USA . Publisher Copyright: {\textcopyright} 2016 Published by Elsevier Ltd.",

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AU - Cholake, Sagar T.

AU - Moran, Grainne

AU - Joe, Bill

AU - Bai, Yu

AU - Singh Raman, R. K.

AU - Zhao, X. L.

AU - Rizkalla, Sami

AU - Bandyopadhyay, Sri

N1 - Funding Information: This research is sponsored by the Australian Research Council through the ARC Discovery Scheme under the project DP120101708 involving UNSW Australia , Monash University Australia and North Carolina State University USA . Publisher Copyright: © 2016 Published by Elsevier Ltd.

PY - 2016/5/15

Y1 - 2016/5/15

N2 - This paper proves that incorporation of recycled short milled carbon fibre (SMCF) in epoxy resin can lead to the generation of significantly tougher carbon fibre reinforced polymer (CFRP) systems in a cost effective manner for infrastructural applications. Structural epoxy resin is modified by adding 5 and 10 wt.% of SMCF particles and the 'fracture toughness' of the modified matrix (GICM) is observed to be increased by 300% and 700% respectively. Subsequently, the SMCF modified epoxy resins were used to fabricate unidirectional carbon fibre reinforced laminates and tested under Mode I crack opening. The SMCF reinforcement showed 50% and 64% improvement in the laminates fracture toughness (GICC) after adding 5% and 10% SMCF by wt., respectively. Scanning electron microscope images of the fracture surface highlight improved debonding and pull-out mechanisms contributing to the additional fracture toughness, and at the same time there was no evidence of fibre clustering.

AB - This paper proves that incorporation of recycled short milled carbon fibre (SMCF) in epoxy resin can lead to the generation of significantly tougher carbon fibre reinforced polymer (CFRP) systems in a cost effective manner for infrastructural applications. Structural epoxy resin is modified by adding 5 and 10 wt.% of SMCF particles and the 'fracture toughness' of the modified matrix (GICM) is observed to be increased by 300% and 700% respectively. Subsequently, the SMCF modified epoxy resins were used to fabricate unidirectional carbon fibre reinforced laminates and tested under Mode I crack opening. The SMCF reinforcement showed 50% and 64% improvement in the laminates fracture toughness (GICC) after adding 5% and 10% SMCF by wt., respectively. Scanning electron microscope images of the fracture surface highlight improved debonding and pull-out mechanisms contributing to the additional fracture toughness, and at the same time there was no evidence of fibre clustering.

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KW - Fracture toughness

KW - Milled carbon fibre

KW - Particulate reinforcement

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ER -

Improved Mode i fracture resistance of CFRP composites by reinforcing epoxy matrix with recycled short milled carbon fibre

Abstract

Keywords

ASJC Scopus subject areas

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