This paper presents a study on incorporation of carbon nanotubes (CNTs) in fiber-reinforced plastics for real-time structural health monitoring. CNTs dispersed in a solvent were uniformly spray-coated on the surfaces of glass fiber fabrics, which were then layed-up and impregnated with an unsaturated polyester resin using vacuum-assisted resin transfer molding to form composite samples. Prior to resin infusion, electrodes were embedded on the periphery as well as between the plies for electrical resistance monitoring. The composite sample was subjected to three-point bending, during which the changes in resistances between various electrode pairs were measured and recorded. Experimental results revealed the dependence of resistance change on the loading conditions, amount of CNTs coated, measured directions, and presence of structural failure. In particular, the percolated CNT networks enabled real-time identification of various failure modes, including delamination, fiber break...

中文翻译：

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使用渗碳纳米管网络的玻璃纤维增​​强复合材料的应变传感和渐进式失效监测

本文提出了对碳纳米管（CNTs）掺入纤维增强塑料中以进行实时结构健康监测的研究。将分散在溶剂中的CNT均匀喷涂在玻璃纤维织物的表面上，然后使用真空辅助树脂传递模塑法将其铺放并用不饱和聚酯树脂浸渍，以形成复合样品。在注入树脂之前，将电极嵌入到周边以及层之间以监测电阻。将复合样品进行三点弯曲，在此期间测量并记录各种电极对之间的电阻变化。实验结果表明，电阻变化与负载条件，涂覆的CNT的数量，测量的方向以及结构破坏的存在有关。