Design and Manufacturing of Bone-like Composites Article Swipe
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· 2022
· Open Access
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· DOI: https://doi.org/10.1016/j.procir.2022.06.052
· OA: W4285130854
Bone is a complex structural composite that features a remarkable combination of mechanical properties, in spite of its rather \nmeager building blocks (i.e., mineral and proteins). The reasons behind these optimal mechanical performances lay in bone hierarchical organization. A crucial role is played by the microscale structure (Haversian), which is formed by a repetition of cylindrical \nbuilding blocks (osteons) surrounded by a matrix of interstitial tissue. Following a biomimetic approach, mimicking this natural \narchitecture in the design of innovative fiber-reinforced composites appears to be a very promising way to improve the performance \nof engineering composites. However, it is still an open challenge due to manufacturing-induced limitations. Here we aim to overcome such limitations and implement a bone-like design into novel fiber-reinforced materials. We first focus on the design and \nmanufacturing of osteon-like features by pull-winding technology, to get a continuous and rapid production. We fabricate osteoninspired multilayer concentric rods by coupling multiple layers of fibers, characterized by different materials and orientations. To \nstudy the effect of each layer on the overall mechanical properties and provide guidelines for optimal design, we perform finite \nelement simulations. The simplicity and versality of the production line allow us to manufacture great quantities of these rods at a \nhigh production rate. The combination of finite elements analysis and experimental design allow us to find a trade-off between the \nbest and the most feasible configuration. Future works will focus on the manufacturing of a multiscale composite laminate made \nof these small pull-winded rods, inspired by the osteons
