文献类型：期刊文献

英文题名：In-situ monitoring of glass fiber/epoxy composites by the embedded multi-walled carbon nanotube coated glass fiber sensor: From fabrication to application

作者：Wan, Yun[1,2];Hu, Wenlong[2];Yang, Lulu[1];Wang, Ziyue[3];Tan, Jianping[3];Liu, Ying[4];Wang, Fangxin[5];Yang, Bin[1]

机构：[1]Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai, Peoples R China;[2]East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang, Jiangxi, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai, Peoples R China;[4]Boiler & Pressure Vesssl Safety Inspect Instiyute, Luoyang, Peoples R China;[5]Yangzhou Univ, Coll Civil Sci & Engn, Yangzhou, Jiangsu, Peoples R China

年份：2022

卷号：43

期号：7

起止页码：4210

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20221712029305);WOS:【SCI-EXPANDED(收录号:WOS:000786611000001)】；

基金：This work was supported by National Natural Science Foundation of China (No. 12072238; 12002126), High-tech Project Research in Shanghai (20511104200), "Chenguang program" of Shanghai Municipal Education Commission and Shanghai Education Development Foundation (18CG30); Youth Talent Promotion Project (2018QNRC001); Shanghai Municipal Market Supervision Bureau Science and Technology Project Plan (2019-30), and the Fundamental Research Funds for the Central Universities (22120210526).

语种：英文

外文关键词：composite joint; curing monitoring; in-situ monitoring; MWCNT@GF sensor

摘要：Monitoring the curing defects as well as damages that occur in the fabrication and application process is important for ensuring the safety of composite structures. In this paper, a highly sensitive 1-D line sensor is designed to achieve self-sensing and diagnosing functionalities in both the fabrication and application of glass fiber reinforced epoxy (GF/epoxy) composites. The sensor consists of multi-walled carbon nanotube coated glass fiber (MWCNT@GF), which is sensing the damage by the principle of resistance change. Due to the vacuum-assisted resin infusion process, the MWCNT@GF sensor is embedded into GF/epoxy composite laminates, and hence, it can monitor the resin frontal flow, curing, and especially the flow defects. In the subsequent application, the tensile performance of a GF/epoxy composite joint is evaluated by not only the force-displacement curve but also the displacement-dependent resistance change of the sensor. Tensile damage modes are distinguished, which is for the first time to be reported. The MWCNT@GF sensor is mechanically stable and highly sensitive; hence, it can be used to follow the composite performance from fabrication until the end of life.