Actuating and energy absorbing textiles composed of NiTi microfilament over-twisted coiled yarns
Actuating and energy absorbing textiles composed of NiTi microfilament over-twisted coiled yarns
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由镍钛微丝超捻卷绕纱组成的驱动和能量吸收纺织品
DOI：
10.1117/12.2585177
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Schaffer, Jeremy
中科院分区：
文献类型：
--
作者：
Weinberg, Charles;Abel, Julianna;Cai, Song;Schaffer, Jeremy
由多功能材料制成的传统纺织结构通过分层制造工艺利用独特的材料行为，开发适用于机器人、运输和医疗器械行业的定制解决方案。例如，由形状记忆材料制成的针织和机织纺织品可以为可编程表面、软机器人夹具和主动压缩服装提供高力和分布式运动。此外，具有超弹性材料的3D间隔织物可以为假肢附件、头盔技术和抗冲击加固提供恒定的力分布、增强的阻尼频率范围和大的能量耗散。通常，研究人员用单丝和纱线制造多功能纺织品，但最近，过度扭曲的卷曲结构已证明可改善致动收缩、力产生和应变恢复。本研究提出了在纺织结构内创建NiTi微丝过盘绕纱线，展示了其作为来自形状记忆效应的高力线性致动器和来自超弹性的紧凑能量吸收器的双重潜力。为了突出NiTi过捻盘绕纱线纺织品的致动潜力，盘绕纱线平行地集成在编织纺织品内。实验研究了过捻盘绕编织物的致动收缩和产生的力。对于能量吸收，在3D间隔织物结构内构造NiTi过捻盘绕纱线，并且实验研究了通过滞后的应变恢复和能量吸收的准静态以及映射阻尼性能依赖行为的动态。这项工作扩展了NiTi基多功能纺织品的轮廓，为驱动和能量吸收技术提供了改进和定制的解决方案。
Traditional textile structures made of multifunctional materials leverage unique material behaviors through a hierarchical manufacturing process to develop tailored solutions applicable to robotic, transportation, and medical device industries. For example, knitted and woven textiles made of shape memory materials can provide high force and distributed motions for programmable surfaces, soft robotic grippers, and active compression garments. Additionally, 3D spacer fabrics with superelastic materials can provide constant force profiles, enhanced damping frequency ranges, and large energy dissipations for prosthetic attachments, helmet technology, and impact resistance fortifications. Usually, researchers manufacture multifunctional textiles with monofilament and yarns but recently, over-twisted coiled structures have demonstrated improved actuation contractions, force generations, and strain recovery. This research presents the creation of NiTi microfilament over-coiled yarns within textile structures, demonstrating their dual potential as high force linear actuators from the shape memory effect, and compact energy absorbers from superelasticity. To highlight the actuation potential of NiTi over-twisted coiled yarn textiles, the coiled yarns were integrated in parallel within a woven textile. The over-twisted coiled weave was experimentally investigated for actuation contractions, and generated forces. For energy absorption, the NiTi over-twisted coiled yarns were structured within a 3D spacer textile structure, and experimentally investigated quasi-statically for strain recovery and energy absorption through hysteresis, as well as dynamically for mapping damping performance dependent behavior. This work expands the profile of NiTi based multifunctional textiles to offer improved and tailored solutions for actuating and energy absorbing technologies.