High-sensitivity phase imaging eddy current magneto-optical system for carbon fiber reinforced polymers detection
作者机构：School of Automation EngineeringUniversity of Electronic Science and Technology of ChinaChengdu611731China Department of Mechanical EngineeringCatholic University of LeuvenLeuven3001Belgium Chengdu Aircraft Industry Company Ltd.Chengdu610091China
出 版 物：《Journal of Electronic Science and Technology》 (电子科技学刊（英文版）)
年 卷 期：2023年第21卷第4期
页 面：48-59页
核心收录：
学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程]
基 金：the National Natural Science Foundation of China under Grants No.U2030205,No.62003075,No.61903065,and No.62003074 Sichuan Science and Technology Planning Project under Grant No.2022JDJQ0040
主 题：Carbon fiber reinforced polymers Defect detection Eddy current magneto-optical Nondestructive testing Phase imaging
摘 要：This paper proposed a high-sensitivity phase imaging eddy current magneto-optical (PI-ECMO) system for carbon fiber reinforced polymer (CFRP) defect detection. In contrast to other eddy current-based detection systems, the proposed system employs a fixed position excitation coil while enabling the detection point to move within the detection region. This configuration effectively mitigates the interference caused by the lift-off effect, which is commonly observed in systems with moving excitation coils. Correspondingly, the relationship between the defect characteristics (orientation and position) and the surface vertical magnetic field distribution (amplitude and phase) is studied in detail by theoretical analysis and numerical simulations. Experiments conducted on woven CFRP plates demonstrate that the designed PI-ECMO system is capable of effectively detecting both surface and internal cracks, as well as impact defects. The excitation current is significantly reduced compared with traditional eddy current magneto-optical (ECMO) systems.
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