Issue 97, 2014
From the journal:

RSC Advances

Strength and failure behavior of a graphene sheet containing bi-grain-boundaries†

Baocheng Yang,‡a   Shuaiwei Wang,‡a   Yanzhen Guo,a   Jinyun Yuan,a   Yubing Si,a   Shouren Zhanga  and  Houyang Chen*b  

* Corresponding authors

a Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou, Henan 450006, China

b Department of Chemical and Biological Engineering, State University of New York at Buffalo, Buffalo, New York 14260-4200, USA
E-mail: hchen23@buffalo.edu

Abstract

By using molecular dynamics simulations, the mechanical properties and failure mechanisms of a graphene sheet containing bi-grain-boundaries were examined. The results reveal that both temperature and density of defects play central roles in the mechanical characteristics of graphene containing bi-grain-boundaries. By increasing the temperature, the tensile strength and fracture strain significantly decrease. The graphene containing high density defects is much stronger than that containing lower density defects. The dependence of Young's modulus on temperature is also investigated. The results also show that the failure processes of graphene sheets containing bi-grain-boundaries are dominated by brittle cracking.

Graphical abstract: Strength and failure behavior of a graphene sheet containing bi-grain-boundaries

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Article information

DOI
https://doi.org/10.1039/C4RA10126J
Article type
Paper
Submitted
10 Sep 2014
Accepted
16 Oct 2014
First published
16 Oct 2014

RSC Adv., 2014,4, 54677-54683

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Strength and failure behavior of a graphene sheet containing bi-grain-boundaries

B. Yang, S. Wang, Y. Guo, J. Yuan, Y. Si, S. Zhang and H. Chen, RSC Adv., 2014, 4, 54677 DOI: 10.1039/C4RA10126J

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