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Actively Tunable Variable Stiffness Composites via Localised Heating Elements

delete2026-07-07
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PRE
AI
H
Henry Chun Hei Yu
P
Paul Smith
I
Iman Mohagheghian *
DOI:10.1016/j.compositesa.2026.110074delete
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摘要

摘要

En 中文
自适应结构需要平衡高承载能力、低质量和结构柔顺性等相互冲突的需求。为解决这一挑战,本文提出了一种通过热塑性层间插入和电热激活实现的主动可调变刚度复合材料。碳纤维增强聚合物(CFRP)层合板通过聚对苯二甲酸乙二醇酯(PET)层进行层间插入,以实现通过热诱导剪切解耦来调节刚度。研究了包括热塑性夹层的位置、数量和厚度以及加载配置(即3点弯曲下梁的跨厚比)等不同设计参数的影响。本工作的关键进展是开发了层间复合材料,在PET夹层中嵌入铜线,可通过局部加热软化。与整体加热不同,局部焦耳加热可实现目标明确、快速且节能的刚度控制。结果表明,激活多个夹层可在9 A电流下于60秒内实现超过50%的可逆弯曲刚度降低。

期刊

Composites Part A-Applied Science and Manufacturing 封面图
Composites Part A-Applied Science and Manufacturing
IF:
8.9
论文数:
8.8K
被引数:
4.5W

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