Laser induced graphene for in situ damage sensing in aramid fiber reinforced composites
Laser induced graphene for in situ damage sensing in aramid fiber reinforced composites
复制标题
激光诱导石墨烯用于芳纶纤维增强复合材料的原位损伤传感
DOI：
10.1016/j.compscitech.2020.108541
复制
发表时间：
2021-01-05
影响因子：
9.1
通讯作者：
Sodano, Henry
中科院分区：
文献类型：
--
作者：
Groo, LoriAnne;Nasser, Jalal;Sodano, Henry
纤维增强复合材料的应变和损伤的原位监测提供了关于材料状态的关键信息，而不需要将结构从操作中移除。为了避免使用复杂、笨重和庞大的传感器网络来跟踪结构的状态，最近的焦点已经转向具有固有特性的多功能材料，这些材料能够进行原位监测。本文研究了激光诱导石墨烯（LIG）在芳纶纤维增强复合材料中的应用，用于机械加载过程中的损伤和应变传感。这里使用的LIG将传感材料完全集成在复合材料中，因为压阻石墨烯层在用支撑基质注入纤维之前直接涂覆在增强芳纶织物上。因此，传感元件不易受环境影响，并且不增加额外的重量，同时还保持了材料的比强度。当复合材料内部发生应变和损伤时，LIG证明能够跟踪应变并原位检测塑性变形。因此，这项工作的结果是一个多功能组件集成到芳纶复合材料，具有原位传感能力。此外，这些工艺和材料易于扩展，用于大规模生产多功能芳纶纤维增强复合材料。
In situ monitoring of strain and damage in fiber-reinforced composites provides critical information regarding the state of the material without requiring the structure to be removed from operation. In order to avoid the use of complex, heavy, and bulky sensor networks to track the state of the structure, recent focus has turned to multifunctional materials with inherent characteristics which enable in situ monitoring. This work investigates laser induced graphene (LIG) integrated within aramid fiber reinforced composites for damage and strain sensing during mechanical loading. The LIG used here fully integrates the sensing material within the composite as the piezoresistive graphene layer is coated directly onto the reinforcing aramid fabric prior to infusing the fibers with the supporting matrix. The sensing element is thus not susceptible to environmental effects and adds no extra weight while also maintaining the specific strength of the material. As strain and damage occur within the composite, the LIG proves capable of tracking strain and detecting plastic deformation in situ. Thus, the result of this work is the integration of a multifunctional component into aramid composites which possesses in situ sensing capabilities. Furthermore, the processes and materials are easily scalable for the large-scale production of multifunctional aramid fiber reinforced composites.