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提出了一种定量优化方案来表征变距离发射-接收(T-R)涡流探头的有效性，以评价涡流检测(ECT)对碳纤维增强树脂(CFRP)复合材料中缺陷检测灵敏度。首先，基于趋肤效应理论，利用COMSOL仿真软件对CFRP的实际趋肤深度进行计算。然后，建立了基于简化磁矢量磁位Ar公式的快速有限元法(FEM)程序和Isight优化软件组成的迭代优化计算平台，研究了探头线圈间距与裂纹深度、工作频率和试件电导率等不同工作参数之间的关系。最后，对含有不同裂纹深度的CFRP板试件背面进行扫描实验，验证了调整线圈的间距可以提高检测裂纹的精度。结果表明，变距离T-R探头涡流检测不仅可以提高深度缺陷的检测分辨率，还可以保留涡流检测图像中CFRP的纤维分布信息。
Abstract：This paper proposes a quantitative optimization scheme for characterizing the effectiveness of variable-distance transmitter-receiver(T-R) probes to assess the sensitivity of eddy current testing(ECT) to subsurface defects in carbon fiber reinforced polymer(CFRP) composites. The CFRP's actual skin depth is first calculated using COMSOL software based on the skin effect theory. An iterative calculation platform composed of Isight software and a fast finite element method(FEM) code based on the reduced magnetic vector potential(Ar) formulation is established to investigate the relationship between the optimal probe coil spacing and various operating parameters,including crack depth,working frequency,and sample conductivity. Finally,simulation and experimental analysis are conducted on CFRP plate samples containing cracks of different depths to validate the effect of coil spacing adjustment on improving the detection accuracy of subsurface cracks. The results indicate that variable-distance T-R probe eddy current testing not only improves the detection resolution of deep defects but also preserves the fiber distribution information of CFRP in the eddy current images.
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基本信息:
中图分类号:TB302.5
引用信息:
[1]周燕,陈玉,程军,等.基于T-R探头的碳纤维复合材料缺陷涡流检测[J].淮阴工学院学报,2026,35(03):31-39.
基金信息:
国家自然科学基金项目“碳纤维复合材料宏/细观损伤的高频涡流检测（HF-ECT）关键技术研究”（51605229）; 安徽省高校自然科学研究项目“基于迁移学习的碳纤维复合材料电涡流C扫描成像检测关键技术”（2023AH050926）
2026-06-15
2026-06-15