Estimation of the moisture absorption rate of glass fiber reinforced plastic using electromagnetic induction testing

Composites Part C: Open Access

Koichi Mizukami¹  Yoshihiro Mizutani²  Akira Todoroki³  Wataru Matsunaga⁴ 

[1] Corresponding author.;Graduate School of Science and Engineering, Civil and Environmental Engineering, Ehime University, 3 Bunkyocho, Matsuyama, Ehime 7908577, Japan;School of Engineering, Department of Mechanical Engineering, Tokyo Institute of Technology, I1-415, 2-12-1, Ookayama, Meguro-ku, Tokyo, 1528552, Japan;School of Engineering, Department of Mechanical Engineering, Tokyo Institute of Technology, I1-457, 2-12-1, Ookayama, Meguro-ku, Tokyo, 1528552, Japan;

关键词: Composite materials;    FRP (fiber reinforced) plastic;    Dielectric;    Non-destructive testing;    Electromagnetics;   

DOI  :  

来源: DOAJ

【 摘 要 】

We present a novel estimation method for the moisture absorption rate (MAR) of glass fiber reinforced plastics (GFRPs) using electromagnetic induction testing (EIT). The relationship between the permittivity and MAR were analytically calculated using a simple moisture absorption model. Moreover, we experimentally obtained the magnitude of the displacement current for dielectric specimens with known permittivity values. The equations were derived from the magnitude of the displacement current measured during EIT by combining the analytical and experimental results. To verify the validity of the proposed method using the derived equations, we applied EIT to GFRPs with different MARs. It was found that MAR can be qualitatively evaluated using the proposed method.

【 授权许可】

Unknown