Strain sensing in GFRP via fully integrated carbon nanotube epoxy film sensors
Strain sensing in GFRP via fully integrated carbon nanotube epoxy film sensors
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通过完全集成的碳纳米管环氧薄膜传感器进行 GFRP 应变传感
DOI：
10.1016/j.jcomc.2021.100191
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
B. Fiedler
中科院分区：
文献类型：
--
作者：
C. Buggisch;D. Gibhardt;N. Felmet;Y. Tetzner;B. Fiedler
复合材料结构的结构健康监测能够及早发现损伤，防止关键部件发生故障。表面贴装应变计通常用于监测高载荷地区复合材料结构的完整性。然而，应变计只能测量结构表面的应变，并且容易受到环境的影响。本文介绍了一种全集成碳纳米管薄膜传感器，用于通过电阻测量对玻璃纤维增强聚合物(GFRP)中的应变和损伤进行传感。单壁碳纳米管环氧薄膜是用手动涂膜机制作的，部分预固化，放置在干燥的玻璃纤维上，然后注入树脂转移模塑工艺。研究了复合材料的力学性能和集成传感器在不同载荷情况和不同层合板铺设情况下的应变传感能力。准静态和阶梯式三点弯曲和拉伸测试的结果表明，集成薄膜允许在不显著损失机械性能的情况下测量玻璃钢的局部应变。裸眼拉伸测试证明，能够监测高载荷区域的局部应变和损伤，从而能够通过阈值电阻变化值进行故障预测。建议的薄膜能够对玻璃钢进行量身定制的应变和损伤监测，从而可以在不同的材料深度、大截面或高载荷区域进行测量。该制造过程易于自动化，适合大规模制造。
Structural health monitoring of composite structures enables early damage detection to prevent critical component failure. Surface-mounted strain gauges are commonly applied to monitor the integrity of composite structures in highly loaded areas. However, strain gauges can only measure strain on the structure’s surface and are exposed to environmental influences. Within this paper, fully integrated carbon nanotube thin-film sensors for strain and damage sensing in glass fibre reinforced polymers (GFRP) via electrical resistance measurements are presented. Single wall carbon nanotube epoxy thin-films were manufactured using a manual film applicator, partially pre-cured, placed on dry glass fabrics and infused in a resin transfer moulding process. The mechanical properties of the composites and strain sensing capabilities of the integrated sensors were studied for various load cases and different laminate lay-ups. Results of quasi-static and step-wise three-point bending and tensile tests show that the integrated films allow for localised strain measurements in GFRP without significant loss of mechanical properties. Open hole tensile tests proof the ability to monitor local strain and damage in highly loaded areas enabling failure prediction via threshold resistance change values. The proposed thin-films enable a tailored strain and damage monitoring of GFRP offering the possibility for measurements at different material depths, over large sections or selectively in highly loaded areas. The manufacturing process is easily automatable and suitable for large scale manufacturing.
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DOI：
10.1016/b978-1-78242-326-3.00013-0
发表时间：
2016
期刊：
--
影响因子：
--
作者：
B. Lee;S. Gupta;K. Loh;K. Loh;Satish Nagarajaiah
通讯作者：
B. Lee;S. Gupta;K. Loh;K. Loh;Satish Nagarajaiah
DOI：
10.1007/s11740-019-00884-5
发表时间：
2019-01
期刊：
Production Engineering
影响因子：
--
作者：
H. Meeuw;V. Wisniewski;U. Köpke;Ali Shaygan Nia;A. R. Vázquez;Martin R. Lohe;Xinliang Feng;Bodo Fiedler
通讯作者：
H. Meeuw;V. Wisniewski;U. Köpke;Ali Shaygan Nia;A. R. Vázquez;Martin R. Lohe;Xinliang Feng;Bodo Fiedler
导电玻璃纤维增强环氧树脂
DOI：
--
发表时间：
1998
期刊：
影响因子：
--
作者：
Michael Kupke;Hans;K. Schulte
通讯作者：
K. Schulte
DOI：
10.3390/ma11071075
发表时间：
2018-06-25
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Müller MT;Pötzsch HF;Gohs U;Heinrich G
通讯作者：
Heinrich G