  High strain rate experiments performed on multi-walled carbon nanotubes and
polycarbonate composites (MWCNT-PC) have exhibited enhanced impact resistance
under a dynamic strain rate of nearly 2500/s with composition of only 0.5 to
2.0 percent of Multi walled carbon nanotubes(MWCNTs) in pure polycarbonate(PC).
Similarly, hardness and elastic modulus under static loads resulted in
significant increase depending upon the composition of MWCNTs in PC.The present
work aims to analyze these results by correlating the data to fit expressions
in generalizing the behavior of MWCNTs composition for MWCNT-PC composites
under both static and impact loads. As a result we found that an optimum
composition of 2.1 percent of MWCNTs exhibits maximum stress resistance within
elastic range under strain rates of nearly 2500/s for MWCNT-PC composites.The
results are critically dependent on the composition of MWCNTs and significantly
deteriorate below and above a threshold composition. A simple model based on
Lennard-Jones atom-atom based potential is formulated to compute static
properties of pure as well as composites of PC.
