The Interfacial Interactions and Size Effect of Carbon Nanotube Reinforced Composites

YUAN Ding; XIONG Huifang; XIAO Tan

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The Interfacial Interactions and Size Effect of Carbon Nanotube Reinforced Composites

YUAN Ding 1,XIONG Huifang 2,XIAO Tan 1 * #

1.Institue of Architecture and Civil Engineering, Guangdong University of Petrochemical Technology, Maoming 525000

2.School of Computer and Electronic Information, Guangdong University of Petrochemical Technology, Maoming 525000

*Correspondence author

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Funding: National Natural Science Foundation of China （No.11272360）, Project of Maoming Science and Technology Programme （No.2016001）, Specialized Research Fund for the Doctoral Program of Higher Education （No.20120171110035）, Natural Science Foundation of Guangdong Province （No.2014A030313793）

Opened online:16 November 2016

Accepted by: none

Citation: YUAN Ding,XIONG Huifang,XIAO Tan.The Interfacial Interactions and Size Effect of Carbon Nanotube Reinforced Composites[OL]. [16 November 2016] http://en.paper.edu.cn/en_releasepaper/content/4709449

Based on the Gurtin-Murdoch's elastic surface theory and the elastic energy principle, the issue of infinite carbon nanotube (CNT) reinforced composite under uniform external load was studied. The elastic equilibrium equations of interfacial interactions and the boundary conditions for the CNT reinforced composite were established. The analytic solutions of displacement and stress were given, and as a simple example, the stress concentration factors of an aluminum matrix with a cylindrical void were computed. The results show that the interfacial interactions do have an effect on the stress distribution of the matrix. The size effect is obvious when the void diameter is rather small, whereas the effect diminishes with the increase of the diameter and the stress concentration factors reduce to the classical solutions. CNT reinforced composites have great promise in becoming high performance structural composites. The work in this paper may shed light on the further studies on interfacial debonding of nanocomposites.

Keywords:nano-structure; interfacial interaction; stress concentration; analytical modelling

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