Quasi static mechanical study of vacuum bag infused bouligand inspired composites

Three novel Bouligand inspired composites were produced by vacuum bag infusion manufacturing process and their quasi-static mechanical performance compared to a conventional aircraft laminate. A morphologic/physical study was first conducted for all configurations response under tensile, three-point bending (3-PB) interlaminar shear strength (ILSS) tests then evaluated discussed. No significant number of voids detected into laminates, however, rough poor defined region observed in both Bouligand-like configurations. Under solicitations, when reference layup, bioinspired have shown similar 18% higher tensile flexural modulus. However, the progressive translaminar failure mode, typically these configurations, led lower load bearing capability. Despite presented resistance than reference, finite element models built revealed good correlation between cross-section stress field mode experimentally.