Performance of 3D-Printed Bionic Conch-Like Composite Plate under Low-Velocity Impact

Abstract

Biological armors can provide an effective protection against predators. In this study, inspired by conch shell, beetle exoskeleton, and nacre, three different types of bionic composites plates were fabricated: Bio-S, Bio-B, and Bio-N, as well as an equivalent monolithic plate formed from the same stiff material designed and manufactured by additive manufacturing, respectively. Low velocity impact tests using drop tower were conducted to study their impact resistance. Experimental findings indicated that the Bio-S composite had superior impact resistance compared with the other bionic composites and the monolithic plate. Furthermore, the influence of the ply angle on the impact resistance of the Bio-S composite plate was investigated. The (0°/30°/0°/30°) arrangement was able to provide the highest impact resistance. Finally, the crack propagation mode in Bio-S composites plates was analyzed, enhancing our understanding of the underlying mechanisms during impact. Such findings may lead to the development of superior lightweight protective structures with improved anti-impact performance.

Overview of 3D Printed Exoskeleton Materials and Opportunities for Their AI-Based Optimization

“…These properties range from classical impact resistance (at low velocity from a drop tower), the effect of layer angle on the resistance of the composite plate, or the mode of crack propagation in composite plates. The best results were obtained with the 0 • /30 • /0 • /30 • arrangement, and further research may result in the development of even more impact-resistant lightweight protective structures for exoskeleton components [14].…”

Formation of Shaped Charge Projectile in Air and Water

“…With the widespread use of cabins near shipboard [ 1 , 2 ] and protection materials [ 3 , 4 , 5 , 6 ] for the design of warships, their explosion and shock resistance [ 7 , 8 , 9 ] is rapidly improved, which makes it very difficult for blast warheads to cause destructive attacks. However, due to the limitation of the dimensions of the warheads, the effect of increasing the charge weight on the improvement of the warhead power is minimal.…”