Model maps nanotube strength

Assessing carbon nanotube strength

High Strength Metal-Carbon Nanotube Composites

Uniform dispersion of pre-synthesized nanotubes in metal matrices is difficult to achieve, and there is substantial damage to the nanotubes during subsequent composite fabrication. The demonstration of an in-situ process involving chemical vapor deposition of single-wall and multi-wall carbon nanotubes into iron matrices without the concomitant formation of iron carbides is reported here. It wa...

A model for the strength of yarn-like carbon nanotube fibers.

A model for the strength of pure carbon nanotube (CNT) fibers is derived and parametrized using experimental data and computational simulations. The model points to the parameters of the subunits that must be optimized in order to produce improvements in the strength of the macroscopic CNT fiber, primarily nanotube length and shear strength between CNTs. Fractography analysis of the CNT fibers ...

Structure and Strength of Iron-Copper-Carbon Nanotube Nanocomposites

Nanocomposite materials of the Fe-Cu system with/without small addition of carbon nanotubes have been synthesized by mechanochemical activation of elemental Fe and Cu powders in a high-energy planetary ball mill and have been examined by the X-ray diffraction method, SEM and the thermopower methods; the tensile strength of the materials obtained has been estimated. The metastable (Fe, Cu) super...

The Effect of Collapsed Nanotubes on Nanotube Bundle Strength

In this paper, we have evaluated the strength of a nanotube bundle, with or without collapsed nanotubes. The self-collapse can increase the strength up to a value of about 30%, suggesting a design towards Artsutanov’s dream of the space elevator, thanks to the design of a 30MYuri strong tether. Graphene bundles are expected to be even stronger.