Detection and quantitative evaluation of defects in glass fiber reinforced plastic laminates by microwaves

Atsushi Hosoi, Yuhei Yamaguchi, Yang Ju*, Yasumoto Sato, Tsunaji Kitayama

*この研究の対応する著者

研究成果: Article査読

21 被引用数 (Scopus)

抄録

A novel method using microwaves is proposed to detect and evaluate defects in glass fiber reinforced plastic (GFRP) laminates. A thin circular plastic film simulating delamination was inserted in GFRP laminates and was detected using microwave reflectometry. A focusing mirror sensor consisting of a horn antenna and two metal mirrors was used to improve the measurement resolution. In addition, the thickness of the film was calculated using a proposed model based on microwave propagation theory. Measuring the variation in the amplitude of the microwave reflectivity, a 7.5-μm-thick film was successfully detected in a 3-mm-thick GFRP laminate. Moreover, the calculated results of the inserted film thickness had a high degree of accuracy.

本文言語English
ページ(範囲)134-144
ページ数11
ジャーナルComposite Structures
128
DOI
出版ステータスPublished - 2015 9月 5

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 土木構造工学

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