  Carbon nanotube (CNT) reinforced metal matrix composites (MMCs) are gaining
the attention of the researchers because of their demand in space and
automobile industries for having low weight and high mechanical properties.
Iron is the most used metal in all engineering fields. Therefore, reinforcing
iron with CNT can reduce its required amount, which might have a positive
economic impact due to the reduced cost of production. However, before the
industrial application of any material the mechanical properties under
different conditions must be known. In this study, the mechanical properties of
iron reinforced separately with single, double and triple wall CNTs are
investigated by Molecular Dynamics (MD) simulation. The study revealed that the
strength and stiffness of pure iron could be enhanced up to 80.4 % and 57.4 %,
respectively, by adding CNTs into iron. We also investigated the effect of
fiber volume percentage and temperature on the mechanical properties of the
composite having single, double and triplewalled carbon nanotubes individually.
As the stone-wales and bi-vacancy defects are inherently introduced in CNTs
during manufacturing, their effect on mechanical properties are also
investigated in the present study
