Non-Destructive Testing Using Microwave in TE Mode for Detecting Axial Cracks in a Metal Pipe

Takuya Katagiri, Kota Sasaki, Noritaka Yusa, Hidetoshi Hashizume

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

1 Citation (Scopus)


A new mode convertor, which has four coaxial cable connectors and four semi-rigid cables situated circumferentially, was fabricated to propagate TE mode microwaves in a circular pipe in order to detect axial cracks appearing in the inner surface of the pipe. In this study, the reflections were measured using a network analyzer by propagating microwaves as a pulse through the mode convertor into a brass pipe that contains the slit on the inner surface. The reflections were evaluated with different orientations, lengths, and positions of the slit. The experimental results showed a clear difference between the signals with and without the slit.

Original languageEnglish
Title of host publicationElectromagnetic Nondestructive Evaluation (XX)
EditorsArtur Lopes Ribeiro, Artur Lopes Ribeiro, Helena Geirinhas Ramos, Helena Geirinhas Ramos
PublisherIOS Press
Number of pages7
ISBN (Electronic)9781614997665
Publication statusPublished - 2017

Publication series

NameStudies in Applied Electromagnetics and Mechanics
ISSN (Print)1383-7281
ISSN (Electronic)1879-8322


  • axial cracks
  • microwave
  • mode convertor
  • TE mode


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