Tian Yuanyuan, Chen Kaijuan, Zheng Han, Kripalani Devesh R, Zeng Zhuohong, Jarlöv Asker, Chen Jiayao, Bai Lichun, Ong Adrian, Du Hejun, Kang Guozheng, Fang Qihong, Zhao Lihua, Qi H Jerry, Wang Yifan, Zhou Kun
HP-NTU Digital Manufacturing Corporate Lab, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
Adv Sci (Weinh). 2023 Jul;10(21):e2301567. doi: 10.1002/advs.202301567. Epub 2023 May 10.
Fabric-based materials have demonstrated promise for high-performance wearable applications but are currently restricted by their deficient mechanical properties. Here, this work leverages the design freedom offered by additive manufacturing and a novel interlocking pattern to for the first time fabricate a dual-faced chain mail structure consisting of 3D re-entrant unit cells. The flexible structured fabric demonstrates high specific energy absorption and specific strength of up to 1530 J kg and 5900 Nm kg , respectively, together with an excellent recovery ratio of ≈80%, thereby overcoming the strength-recoverability trade-off. The designed dual-faced structured fabric compares favorably against a wide range of materials proposed for wearable applications, attributed to the synergetic strengthening of the energy-absorbing re-entrant unit cells and their unique topological interlocking. This work advocates the combined design of energy-absorbing unit cells and their interlocking to extend the application prospects of fabric-based materials to shape-adaptive protection.
基于织物的材料已在高性能可穿戴应用中展现出潜力，但目前受其机械性能不足的限制。在此，这项工作利用增材制造提供的设计自由度和一种新型互锁图案，首次制造出一种由3D凹腔单元组成的双面锁子甲结构。这种柔性结构织物分别展现出高达1530 J/kg的高比能量吸收和5900 N/m/kg的比强度，以及约80%的出色恢复率，从而克服了强度与恢复性之间的权衡。所设计的双面结构织物与多种用于可穿戴应用的材料相比具有优势，这归因于能量吸收凹腔单元的协同强化及其独特的拓扑互锁。这项工作倡导能量吸收单元及其互锁的组合设计，以将基于织物的材料的应用前景扩展到形状自适应保护领域。
