Bio-inspired impact-resistant composites
Bio-inspired impact-resistant composites
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DOI：
10.1016/j.actbio.2014.03.022
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发表时间：
2014-09-01
影响因子：
9.7
通讯作者：
Kisailus, D.
中科院分区：
文献类型：
--
作者：
Grunenfelder, L. K.;Suksangpanya, N.;Kisailus, D.
通过进化过程，生物复合材料得到了优化，以实现特定的功能。这一优化在粉碎捕食者口足类动物(具体地说，小齿龙)的矿化指甲球杆中得到了例证。这种甲壳类动物的棍棒被设计成能够承受它向猎物发出的数千次高速打击。这种多区域结构的内皮层以矿化纤维层的螺旋状排列为特征，这种结构导致了抗冲击和能量吸收。在这里，我们将在口足类俱乐部观察到的螺旋面设计策略应用于高性能碳纤维-环氧复合材料的制造。通过实验和计算方法表明，螺旋形结构可以减少冲击事件期间复合材料壁板中的穿透损伤扩展，并导致韧性的增加。这些发现对航空航天、汽车和装甲应用的复合材料部件的设计具有一定的指导意义。(C)2014 Acta Materialia Inc.由Elsevier Ltd.出版。保留所有权利。
Through evolutionary processes, biological composites have been optimized to fulfil specific functions. This optimization is exemplified in the mineralized dactyl club of the smashing predator stomatopod (specifically, Odontodactylus scyllarus). This crustacean's club has been designed to withstand the thousands of high-velocity blows that it delivers to its prey. The endocuticle of this multiregional structure is characterized by a helicoidal arrangement of mineralized fiber layers, an architecture which results in impact resistance and energy absorbance. Here, we apply the helicoidal design strategy observed in the stomatopod club to the fabrication of high-performance carbon fiber-epoxy composites. Through experimental and computational methods, a helicoidal architecture is shown to reduce through-thickness damage propagation in a composite panel during an impact event and result in an increase in toughness. These findings have implications in the design of composite parts for aerospace, automotive and armor applications. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.