Crack tip stress and formation of Plastic/influence zone for composite solid rocket propellants

The necessity to understand the crack behaviour of composite solid rocket propellants as it helps in analysis of service life of rocket motors. Experimental data reveals that a material’s microstructure at the crack tip can have a significant effect on the local damage near the crack tip and crack growth behaviour in particulate composites. 

(All my simulations and research is conducted under guidance of respected Dr. Henry Tan, Uni. of Manchester)

STRESS DISTRIBUTION IN NANOTUBES