Study of Defects in Carbon Fiber Reinforced Composites Visualized by Magnetic Induction Tomography

IF 1 4区材料科学 Q3 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Research in Nondestructive Evaluation Pub Date : 2020-04-06 DOI:10.1080/09349847.2020.1745340

Meng Qifeng, S. Kai, Z. Li-pan, Ning Ning, Huang Huabin

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引用次数: 0

Abstract

ABSTRACT This study proposed a new magnetic induction tomography (MIT) sensor-based electromagnetic induction to reconstruct the conductivity distribution of target conductors and ultimately visualize carbon fiber reinforced plastic (CFRP) plates to measure their defects. This unique MIT sensor was designed for all coil centers located in one line, whereas perpendicular center lines of excitation and detection coils were simulated in a 3D finite element model. The parameters of frequencies, turns, excitation currents, and liftoffs were optimized to further improve sensitivity. Four broken wire defects at different depths were also inspected in an experiment and imaged by the Landweber algorithm. The new probe effectively identified the 4 mm × 4 mm × 0.5 mm defect buried at 1.5 mm. The different depths of defects were also established by the voltage amplitude of the detection coil. The concavity of the reconstructed images effectively represented the depths of the defects. Hence, this MIT probe is highly useful in quantitatively measuring the defects of CFRP plates and visually displaying.

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碳纤维增强复合材料磁感应层析成像缺陷研究

本研究提出了一种新的基于磁感应层析成像(MIT)传感器的电磁感应重建目标导体的电导率分布，并最终可视化碳纤维增强塑料(CFRP)板以测量其缺陷。这种独特的MIT传感器设计用于所有线圈中心位于一条线上，而激励线圈和检测线圈的垂直中心线在三维有限元模型中进行模拟。优化了频率、匝数、励磁电流和升力等参数，进一步提高了灵敏度。实验中还检测了不同深度的4种断丝缺陷，并用Landweber算法进行了成像。该探针能有效识别埋在1.5 mm处的4mm × 4mm × 0.5 mm缺陷。通过检测线圈的电压幅值确定了缺陷的不同深度。重建图像的凹凸度有效地表征了缺陷的深度。因此，该探针在定量测量CFRP板的缺陷和视觉显示方面非常有用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Research in Nondestructive Evaluation 工程技术-材料科学：表征与测试

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Research in Nondestructive Evaluation® is the archival research journal of the American Society for Nondestructive Testing, Inc. RNDE® contains the results of original research in all areas of nondestructive evaluation (NDE). The journal covers experimental and theoretical investigations dealing with the scientific and engineering bases of NDE, its measurement and methodology, and a wide range of applications to materials and structures that relate to the entire life cycle, from manufacture to use and retirement. Illustrative topics include advances in the underlying science of acoustic, thermal, electrical, magnetic, optical and ionizing radiation techniques and their applications to NDE problems. These problems include the nondestructive characterization of a wide variety of material properties and their degradation in service, nonintrusive sensors for monitoring manufacturing and materials processes, new techniques and combinations of techniques for detecting and characterizing hidden discontinuities and distributed damage in materials, standardization concepts and quantitative approaches for advanced NDE techniques, and long-term continuous monitoring of structures and assemblies. Of particular interest is research which elucidates how to evaluate the effects of imperfect material condition, as quantified by nondestructive measurement, on the functional performance.