Demonstration of the applicability of nondestructive microwave testing to the long-range inspection of inner-surface cracks in tubes

Kota Sasaki, Takuya Katagiri, Noritaka Yusa, Hidetoshi Hashizume

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This study evaluated the applicability of nondestructive microwave testing method for the long-range detection of inner-surface cracks in metallic tubes. Two seamless straight tubes 7 m in length and 23.0 mm in inner diameter were prepared, and artificial circumferential slits penetrating the tube walls were introduced. A probe to propagate microwave inside the tube, designed based on three-dimensional finite element simulations, was attached to an end of the tube, and the reflections of the microwave propagating inside the tube were measured using a network analyzer. The experiments confirmed clear reflections due to the slits situated 6 m away from the probe. Furthermore, imposing a signal processing method to compensate for the dispersion of the microwave clarified the reflections and enabled the slit to be localized quantitatively from the time-of-flight of the reflections.

Original languageEnglish
Pages (from-to)692-696
Number of pages5
JournalMaterials Transactions
Volume58
Issue number4
DOIs
Publication statusPublished - 2017 Jan 1

Keywords

  • Electromagnetic nondestructive evaluation
  • Finite element simulation
  • Localization
  • Signal processing
  • Time of flight

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Demonstration of the applicability of nondestructive microwave testing to the long-range inspection of inner-surface cracks in tubes'. Together they form a unique fingerprint.

  • Cite this