Progettazione e analisi di progetti innovativi strutture composite

This study presents a comprehensive characterization of three innovative materials, namely shape memory alloy (SMA) thin wires, carbon bistable plates, and natural flax fiber com posites. The characterization process involved various experimental techniques aimed at understanding their mechanical behavior under different loading conditions. The first aspect of the research focused on the successful characterization of SMA thin wires using traditional clamps facilitated by the use of ductile tabs. By employing this ap proach, we achieved precise measurements of the mechanical properties of SMA wires, cru cial for their potential applications in various fields, including actuators devices. Furthermore, the study investigated the behavior of a carbon bistable plate with antisym metric lamination during the snap-through between its two stable configurations. Through detailed analysis, including the reconstruction of deformations throughout this highly dy namic event, we gained valuable insights into the structural response of bistable carbon plates, essential for optimizing their design and performance in engineering applications. Finally, the static and dynamic characterization of natural flax fiber composites was con ducted, with a particular focus on the results of the fatigue experimental campaign. This analysis addressed a significant gap in the literature concerning these innovative materi als, providing essential data on their fatigue behavior and durability under cyclic loading conditions. The experimental findings not only contribute to the fundamental understand ing of natural fiber composites but also offer practical implications for their utilization in lightweight structural applications, such as automotive and aerospace components. Overall, this interdisciplinary study provides valuable experimental insights into the me chanical behavior of SMA wires, carbon bistable plates, and natural fiber composites, ad dressing key aspects of their performance and potential applications. The findings contribute to advancing the knowledge in these material domains and offer practical implications for their integration into various engineering systems and structures