Abstract
We investigate the variation in fracture strength of graphene with temperature, strain rate, and crack length using molecular dynamics (MD) simulations, kinetic analysis of fracture with a nonlinear elastic relation, and the quantized fracture mechanics theory. Young's modulus does not vary significantly with temperature until about 1200 K, beyond which the material becomes softer. Temperature plays a more important role in determining the fracture strength of graphene. Our studies suggest that graphene can be a strong material even, when subjected to variations in temperature, strain rate, and cracks.
Original language | English (US) |
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Article number | 064321 |
Journal | Journal of Applied Physics |
Volume | 108 |
Issue number | 6 |
DOIs | |
State | Published - Sep 15 2010 |
ASJC Scopus subject areas
- Physics and Astronomy(all)