Dynamic mechanical behavior of multilayer graphene via supersonic projectile penetration
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- 28 November 2014
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 346 (6213), 1092-1096
- https://doi.org/10.1126/science.1258544
Abstract
Multilayer graphene is an exceptional anisotropic material due to its layered structure composed of two-dimensional carbon lattices. Although the intrinsic mechanical properties of graphene have been investigated at quasi-static conditions, its behavior under extreme dynamic conditions has not yet been studied. We report the high–strain-rate behavior of multilayer graphene over a range of thicknesses from 10 to 100 nanometers by using miniaturized ballistic tests. Tensile stretching of the membrane into a cone shape is followed by initiation of radial cracks that approximately follow crystallographic directions and extend outward well beyond the impact area. The specific penetration energy for multilayer graphene is ~10 times more than literature values for macroscopic steel sheets at 600 meters per second.Keywords
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