New Impact Resistance Bionic Composite Coating Inspired by Turtle Shell

Impact Protective Performance and Theoretical Analysis of Polyvinyl Chloride/Thermoplastic Polyurethane Foam Composite Structure via Finite Element Simulation

“…The rapid development of the logistics, new energy, and sports industries has led to an increased emphasis on the protection of products and people, such as the requirement to protect household appliances from the loads occurring during transportation, prevent the battery packs from exploding due to stress concentration, and protect athletes and construction workers from accidental injuries. − Therefore, protective materials should have excellent impact-damping properties for better protection. Biological materials have developed a cornucopia of strategies to resist impact by minimizing damage through evolution. − The tortoise has survived for over several hundred million years and evolved an excellent shell structure to resist high-stress repeated impact by stone and predators. , The shell comprises an outer layer of cortical bone and an inner layer of trabecular bone. The rigid cortical bone prevents significant deformation and redistributes the impact energy, and the impact energy is absorbed by the trabecular bone enriched with carbonaceous fibers and pores. ,, …”

“…The rigid cortical bone prevents significant deformation and redistributes the impact energy, and the impact energy is absorbed by the trabecular bone enriched with carbonaceous fibers and pores. 10,12,13 Closed-cell polymer foams, as a two-phase system that contains statistically distributed gasp bubbles Polymer foams, have been widely used as buffering materials because of their advantages of low density and efficient energy-absorbing properties. 14−18 Most polymer foams absorb impact energy through plastic deformation or crushing, and they are unable to be reused due to permanent deformation.…”

“…Biological materials have developed a cornucopia of strategies to resist impact by minimizing damage through evolution. − The tortoise has survived for over several hundred million years and evolved an excellent shell structure to resist high-stress repeated impact by stone and predators. , The shell comprises an outer layer of cortical bone and an inner layer of trabecular bone. The rigid cortical bone prevents significant deformation and redistributes the impact energy, and the impact energy is absorbed by the trabecular bone enriched with carbonaceous fibers and pores. ,, …”