Effect of carbon nanotube modified epoxy adhesive on CFRP-to-steel interface

Asghar H. Korayem; Chen Yang Li; Qian Hui Zhang; Xiao Ling Zhao; Wen Hui Duan

doi:10.1016/j.compositesb.2015.03.063

Effect of carbon nanotube modified epoxy adhesive on CFRP-to-steel interface

Asghar H. Korayem, Chen Yang Li, Qian Hui Zhang, Xiao Ling Zhao, Wen Hui Duan

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

84 Citations (Scopus)

Abstract

The effects of carbon nanotube (CNT) modified epoxy adhesive on CFRP-to-steel interfaces were investigated using double strap joints. The bond behaviours studied were failure modes, bond interface at microlevel, bond strength, effective bond length, CFRP strain distribution and bond-slip relationships. For the first time, a novel type of failure in the CFRP-steel joint was discovered, attributable to weak bonding between woven mesh and CFRP fibres. This failure mode prevented exploitation of the full potential of the carbon fibres and the CNT modified epoxy adhesive. Joints bonded with CNT-epoxy adhesive had an effective bond length of about 60 mm, whereas that of joints bonded with pure epoxy was about 70 mm. The CNT-epoxy adhesive can transfer more load from the host structure to the bonded CFRP laminates, consequently modifying bond behaviour. It is therefore expected that CNT-epoxy nanocomposites will assist in the strengthening and rehabilitation of steel infrastructures using CFRP laminates.

Original language	English
Pages (from-to)	95-104
Number of pages	10
Journal	Composites Part B: Engineering
Volume	79
DOIs	https://doi.org/10.1016/j.compositesb.2015.03.063
Publication status	Published - 8 May 2015
Externally published	Yes

Keywords

A. Carbon fibre
A. Particle-reinforcement
B. Interface/interphase
D. Mechanical testing

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

More information

10.1016/j.compositesb.2015.03.063

Cite this

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title = "Effect of carbon nanotube modified epoxy adhesive on CFRP-to-steel interface",

abstract = "The effects of carbon nanotube (CNT) modified epoxy adhesive on CFRP-to-steel interfaces were investigated using double strap joints. The bond behaviours studied were failure modes, bond interface at microlevel, bond strength, effective bond length, CFRP strain distribution and bond-slip relationships. For the first time, a novel type of failure in the CFRP-steel joint was discovered, attributable to weak bonding between woven mesh and CFRP fibres. This failure mode prevented exploitation of the full potential of the carbon fibres and the CNT modified epoxy adhesive. Joints bonded with CNT-epoxy adhesive had an effective bond length of about 60 mm, whereas that of joints bonded with pure epoxy was about 70 mm. The CNT-epoxy adhesive can transfer more load from the host structure to the bonded CFRP laminates, consequently modifying bond behaviour. It is therefore expected that CNT-epoxy nanocomposites will assist in the strengthening and rehabilitation of steel infrastructures using CFRP laminates.",

keywords = "A. Carbon fibre, A. Particle-reinforcement, B. Interface/interphase, D. Mechanical testing",

author = "Korayem, {Asghar H.} and Li, {Chen Yang} and Zhang, {Qian Hui} and Zhao, {Xiao Ling} and Duan, {Wen Hui}",

note = "Funding Information: The authors are grateful for the financial support of the Australian Research Council for conducting this study. A. H. Korayem is grateful for the financial support from the Ministry of Science, Research and Technology of Iran . The authors acknowledge the use of facilities within the Monash Centre for Electron Microscopy. The authors thank Professor G. P. Simon in the Department of Materials Engineering at Monash University for reading the manuscript. The authors also thank Dr Dilum Fernando in the Department of Civil Engineering at the University of Queensland for discussion of SEM images of the failure modes. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

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AU - Duan, Wen Hui

N1 - Funding Information: The authors are grateful for the financial support of the Australian Research Council for conducting this study. A. H. Korayem is grateful for the financial support from the Ministry of Science, Research and Technology of Iran . The authors acknowledge the use of facilities within the Monash Centre for Electron Microscopy. The authors thank Professor G. P. Simon in the Department of Materials Engineering at Monash University for reading the manuscript. The authors also thank Dr Dilum Fernando in the Department of Civil Engineering at the University of Queensland for discussion of SEM images of the failure modes. Publisher Copyright: © 2015 Elsevier Ltd.

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N2 - The effects of carbon nanotube (CNT) modified epoxy adhesive on CFRP-to-steel interfaces were investigated using double strap joints. The bond behaviours studied were failure modes, bond interface at microlevel, bond strength, effective bond length, CFRP strain distribution and bond-slip relationships. For the first time, a novel type of failure in the CFRP-steel joint was discovered, attributable to weak bonding between woven mesh and CFRP fibres. This failure mode prevented exploitation of the full potential of the carbon fibres and the CNT modified epoxy adhesive. Joints bonded with CNT-epoxy adhesive had an effective bond length of about 60 mm, whereas that of joints bonded with pure epoxy was about 70 mm. The CNT-epoxy adhesive can transfer more load from the host structure to the bonded CFRP laminates, consequently modifying bond behaviour. It is therefore expected that CNT-epoxy nanocomposites will assist in the strengthening and rehabilitation of steel infrastructures using CFRP laminates.

AB - The effects of carbon nanotube (CNT) modified epoxy adhesive on CFRP-to-steel interfaces were investigated using double strap joints. The bond behaviours studied were failure modes, bond interface at microlevel, bond strength, effective bond length, CFRP strain distribution and bond-slip relationships. For the first time, a novel type of failure in the CFRP-steel joint was discovered, attributable to weak bonding between woven mesh and CFRP fibres. This failure mode prevented exploitation of the full potential of the carbon fibres and the CNT modified epoxy adhesive. Joints bonded with CNT-epoxy adhesive had an effective bond length of about 60 mm, whereas that of joints bonded with pure epoxy was about 70 mm. The CNT-epoxy adhesive can transfer more load from the host structure to the bonded CFRP laminates, consequently modifying bond behaviour. It is therefore expected that CNT-epoxy nanocomposites will assist in the strengthening and rehabilitation of steel infrastructures using CFRP laminates.

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Effect of carbon nanotube modified epoxy adhesive on CFRP-to-steel interface

Abstract

Keywords

ASJC Scopus subject areas

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