Measurement of through-thickness electrical properties of carbon fiber reinforced thermoplastics using transmission method based on electromagnetic induction testing

IF 4.1 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Ndt & E International Pub Date : 2024-07-25 DOI:10.1016/j.ndteint.2024.103202

Wataru Matsunaga , Satoshi Imai , Yoshihiro Mizutani, Akira Todoroki

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Abstract

In this study, we proposed an electromagnetic induction testing method for measuring the electrical properties of carbon fiber reinforced thermoplastics (CFRTPs) along the through-thickness direction. The effectiveness of the transmission method, wherein the coil is placed opposite to the object to be measured, was demonstrated through finite element analysis and experimental measurements. The simulation results indicated that the output voltage of an interlaminar non-electrically conductive specimen exceeded that of an interlaminar conductive specimen due to the electromagnetic shielding effect. In the experiments, the impedance along the through-thickness direction depended on the lamination configuration and the presence of the PA-6 layer. Our findings indicate that the proposed method can be used to measure the changes in the electrical properties of CFRTP along the through-thickness direction.

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利用基于电磁感应测试的传输方法测量碳纤维增强热塑性塑料的厚度电特性

在这项研究中，我们提出了一种电磁感应测试方法，用于测量碳纤维增强热塑性塑料（CFRTPs）沿厚度方向的电气特性。通过有限元分析和实验测量，证明了线圈与待测物体相对放置的传输方法的有效性。模拟结果表明，由于电磁屏蔽效应，层间非导电试样的输出电压超过了层间导电试样的输出电压。在实验中，沿厚度方向的阻抗取决于层叠结构和 PA-6 层的存在。我们的研究结果表明，所提出的方法可用于测量 CFRTP 沿厚度方向的电特性变化。

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来源期刊

Ndt & E International 工程技术-材料科学：表征与测试

CiteScore

7.20

自引率

9.50%

发文量

121

审稿时长

55 days

期刊介绍： NDT&E international publishes peer-reviewed results of original research and development in all categories of the fields of nondestructive testing and evaluation including ultrasonics, electromagnetics, radiography, optical and thermal methods. In addition to traditional NDE topics, the emerging technology area of inspection of civil structures and materials is also emphasized. The journal publishes original papers on research and development of new inspection techniques and methods, as well as on novel and innovative applications of established methods. Papers on NDE sensors and their applications both for inspection and process control, as well as papers describing novel NDE systems for structural health monitoring and their performance in industrial settings are also considered. Other regular features include international news, new equipment and a calendar of forthcoming worldwide meetings. This journal is listed in Current Contents.