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Title
Japanese: 
English:Measurement of through-thickness electrical properties of carbon fiber reinforced thermoplastics using transmission method based on electromagnetic induction testing 
Author
Japanese: 松永 航, 今井 理, 水谷 義弘, 轟 章.  
English: Wataru Matsunaga, Satoshi Imai, Yoshihiro Mizutani, Akira Todoroki.  
Language English 
Journal/Book name
Japanese: 
English:NDT&E International 
Volume, Number, Page Vol. 147       
Published date July 24, 2024 
Publisher
Japanese: 
English:Elsevier 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://doi.org/10.1016/j.ndteint.2024.103202
 
DOI https://doi.org/10.1016/j.ndteint.2024.103202
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 di- rection 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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