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

被引：73

作者：

Korayem, Asghar H. ^{[1
]}

Li, Chen Yang ^{[1
]}

Zhang, Qian Hui ^{[1
]}

Zhao, Xiao Ling ^{[1
]}

Duan, Wen Hui ^{[1
]}

机构：

[1] Monash Univ, Dept Civil Engn, Melbourne, Vic 3800, Australia

来源：

COMPOSITES PART B-ENGINEERING | 2015年 / 79卷

基金：

澳大利亚研究理事会;

关键词：

Carbon fibre; Particle-reinforcement; Interface/interphase; Mechanical testing; FINITE-ELEMENT-ANALYSIS; BONDED JOINTS; MECHANICAL-PROPERTIES; POLYMER COMPOSITES; CRACK-PROPAGATION; MODULUS CFRP; PLATES; BEHAVIOR; BEAMS; MEMBERS;

D O I：

10.1016/j.compositesb.2015.03.063

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 rum. 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. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：95 / 104

页数：10

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