Results and Discussion Tensile strength
The tensile strength of sisal / glass fibre hybrid composites is presented in table-1. It is observed that the glass fibre composite is exhibiting higher tensile strength than the sisal fibre reinforced composite. The sisal / glass fibre hybrid composite tensile strength is higher than sisal reinforced composite but lower than glass fibre reinforced composite. The increase in tensile strength of hybrid composite is because of glass fibre content. The variation tensile strength with fibre content is shown in figure 1.
The effect of chalk powder on tensile strength of sisal /glass fibre hybrid composite is shown figure 2. It is observed that the composite without chalk powder addition is exhibiting higher tensile strength, as the chalk powder quantity in sisal / glass fibre hybrid composite increases then the tensile strength is decreasing.
Flexural Strength
The flexural strength of sisal / glass fibre hybrid composites is presented in table-2. It is observed that the glass fibre composite is exhibiting higher flexural strength than the sisal fibre reinforced composite. The sisal / glass fibre hybrid composite Flexural strength is higher than sisal reinforced composite but lower than glass fibre reinforced