Development and characterization of three-dimensional woven-shaped preforms and their associated composites

Three-dimensional multilayer woven preforms are mostly used in high-performance composite applications due to their better in-plane and out-of-plane mechanical properties. The present study aims to produce and characterize multilayer flax yarn-based three-dimensional-shaped preforms and their corresponding composites. The T- and H-shaped three-dimensional woven preforms were prepared on conventional dobby loom using two types of weaving pattern, i.e., layer-to-layer orthogonal and through thickness orthogonal. Composites were fabricated using open mould technique. Peel strength of T- and H-shaped structures was investigated and compared with laminated structures. Mechanical properties of layer-to-layer-interlocked structures in T and H shapes were found better than TT and laminated structure, both for reinforcement and composite.