Twisted jute/glass hybrid-composites

The objective is to evaluate the effect of twist of jute/glass yarns on the mechanical properties of the twisted yarns and the hybrid-composite made of such twisted yarns. Jute yarns and E-glass roving were used for producing woven fabrics. Jute and glass yarn have been twisted together. Different twist levels have been carried out to figure out the optimum twist level which gives the maximum mechanical properties. Hybrid twisted yarn with optimum twist level has been chosen to be woven with the other jute and glass yarns. VARTM technique was used for preparing the hybrid-composite samples. Results showed that 20 twists per meter is the optimum twist value where the maximum breaking force and tenacity of the hybrid yarn were obtained. At optimum twist value, 40 % increasing in the breaking force was achieved compared to the zero twist yarns. On the other hand, 27% increasing in the tensile strength of hybrid-composite made of jute/glass yarns with optimum twist, compared to the hybrid-composite made of zero twist jute/glass yarns. The findings showed that a small amount of twist can dramatically enhance the mechanical properties of the hybrid-yarns; consequently this will lead to an improvement in mechanical properties of manufactured composite.