Executive Summary : | Fiber reinforced composites are essential materials for various industries, including aviation, automobiles, marine structures, and defense armour systems. They offer high mechanical strength and low weight to strength ratio, making them suitable for these applications. A well-designed micro-structure can increase the efficiency of composites by increasing strength while reducing weight. Recent studies have inspired microstructural design based on biological structures, which have excellent mechanical properties and minimal use of basic constituents. Helicoidal laminated structures, found in snail shells, fish, plants, and arthropods, are a common architectural motif found in nature. These structures consist of successive fibre layers with small rotations between adjacent plies, providing high stiffness, strength, toughness, and damage resistance. The use of helicoidal composites in impact-resisting structures requires a comprehensive understanding of their response under impact loading. This requires detailed study of the effect of microstructures on fibre reinforced composites at high strain rates for efficient microstructure design. The current research proposal aims to deliver an introspective study, focusing on manufacturing helicoidal campsites, impact experiments using drop hammer apparatus, and computational modeling of the composites. The results will help understand the behavior of helicoidal composites under different strain rate loading and design an efficient microstructure for impact loading applications. |