Characteristics of Eddy Current Distribution in Carbon Fiber Reinforced Polymer

被引：14
作者：
Jiao, Shaoni [1 ]
Li, Jian [1 ]
Du, Fei [1 ]
Sun, Lei [1 ]
Zeng, Zhiwei [1 ]
机构：
[1] Xiamen Univ, Sch Aerosp Engn, Xiamen 361005, Fujian, Peoples R China
来源：
JOURNAL OF SENSORS | 2016年 / 2016卷
基金：
美国国家科学基金会;
关键词：
EPOXY COMPOSITES; DAMAGE;
D O I：
10.1155/2016/4292134
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The paper studies the characteristics of eddy current (EC) distribution in carbon fiber reinforced polymer (CFRP) laminates so as to guide the research and operation of eddy current testing of CFRP. To this end, an electromagnetic field computation model of EC response to CFRP based on the finite element method is developed. Quantitative analysis of EC distribution in plies of unidirectional CFRP reveals that EC changes slowly along the fiber direction due to the strong electrical anisotropy of the material. Variation of EC in plies of multidirectional CFRP is fast in both directions. The attenuation of EC in the normal direction in unidirectional CFRP is faster than that in isotropic material due to faster diffusion of EC. In multidirectional CFRP, EC increases near the interfaces of plies having different fiber orientations. The simulation results are beneficial to optimizing sensor design and testing parameters, as well as damage detection and evaluation.
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收藏
页数：8
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