An investigative work was conducted to examine the tensile, flexural and impact strength of carbon fiber reinforced vinyl ester composites filled with different proportions (0, 0.5, 1, 1.5 and 2) of graphitic carbon nitride (g-C3N4) and silicon nitride (Si3N4) filler. Composites were fabricated by hand layup method. Results showed an increase in tensile strength of g-C3N4 and Si3N4 particles content by 1% and beyond which the strength decreased. With the addition of 1wt% of g-C3N4 and Si3N4 in carbon fiber reinforced vinyl ester composites, the flexural strength increased to 16% and the tensile strength increased by 10%. The eroded surface of specimen was observed under scanning electron microscope and the results are reported. Incorporation of nano fillers in hybrid polymer composite will enhance the mechanical properties. Hence hybrid C-V extensively used in marine applications.

Synthetic fiber reinforced composites have already been proved to be stronger and more durable. The composites are being globally used in all the possible fields like automobiles, aircraft and marine industry. The present work is an investigation on the wear behaviour of the hybrid polymer composites. In this experimental work, the carbon fibres are reinforced with vinyl ester, g-C3N4 and Si3N4 were used to obtain hybrid composite by hand layup technique. The experiments were designed according to Taguchi (L27) orthogonal array. Experiments are carried out using slurry abrasive wear testing machine to inspect the wear rate. Further, a fuzzy logic model is adopted for the estimation of sliding wear in hybrid composites by the experimental data. Results showed that estimated fuzzy logic outputs are compared to experimental results, which is very much satisfied with a mean error estimation of 0.27%, so that the fuzzy logic model can be efficiently used to compute the wear performance.