Spatial electric potential distributions and damage mapping in 3D carbon fiber/epoxy angle-interlock woven composites with different current directions

被引：5
作者：
Han, Chaofeng [1 ]
Ke, Yanan [2 ]
Guo, Jinhui [2 ]
Shi, Baohui [3 ]
Yu, Bin [1 ]
Jia, Lin [1 ]
Liu, Jie [1 ]
机构：
[1] Henan Univ Engn, Coll Text, 1 Xianghe Rd, Zhengzhou 451191, Peoples R China
[2] Donghua Univ, Coll Text, Shanghai, Peoples R China
[3] Qingdao Univ, Res Ctr Intelligent & Wearable Technol, Collaborat Innovat Ctr Ecotext Shandong Prov, Coll Text & Clothing,State Key Lab Biofibers & Eco, Qingdao, Shandong, Peoples R China
来源：
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL | 2023年 / 22卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Carbon fibers; 3D angle-interlock woven composites; electric potential distribution; structural health monitoring; damage mapping; FIBER-REINFORCED COMPOSITES; IMPACT DAMAGE; PROGRESSIVE DAMAGE; RESISTANCE; CFRP; DEFORMATION; CRACKS;
D O I：
10.1177/14759217231166847
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Exploring electric potential distributions in carbon fiber reinforced polymer composites (CFRPs) is important in electrical-based structural health monitoring for in situ damage detection. Here we investigate influences of current injection angles, electrode locations, and current injection pairs on the electric potential distributions in 3D carbon fiber/epoxy angle-interlock woven (AIW) composites. We have conducted different types of electric potential measurements and established a linear anisotropic conductivity model to reveal the electric potential distributions. It was found that the curved warp yarns form many contacts and increase the conduction path, leading to lower electric conductivity and flatter potential field than those of the weft yarn with straight alignment. The orientation and value of surface electric potential field change depend on current flow direction caused by current injection mode (CIM) and conduction mechanism due to yarn arrangement. Oblique current directed at an angle of 45 degrees is more sensitive in indicating interior damage than that of current parallel to the yarn direction. It is recommended that the oblique current injection should be used to provide effective damage sensing for CFRPs with complex structures.
引用
收藏
页码：4055 / 4068
页数：14
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