GM Nasr and HM Shaker*
The stress strain behavior of nanostructure carbon reinforced rubber composites was studied. The effect of both uniaxial and biaxial tensile stress on electrical conductivity of our samples was investigated. We have noticed that electrical conductivity decreased on applying uniaxial loading and increased with increasing biaxial tensile ones. Both elastic modulus and yield points in uniaxial and biaxial mode of stress were obtained and compared with increasing the concentration of nano-filler. Calculated values of the knee point strains have been obtained, and we made a fitting for our experimental results.