Optimized microwave excitation probe for general application in NDT of wall thinning in metal pipes of arbitrary diameter

Kota Sasaki, Linsheng Liu, Noritaka Yusa, Hidetoshi Hashizume

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Generalized approaches to developing a microwave NDT for flaws inside an arbitrary diameter pipe through optimizing a microwave-exciting probe were investigated. A microwave probe obtained from a parameter-optimizing scheme based on transmission characteristics is proposed. Three-dimensional finite element simulation of five microwave probes indicates that a larger optimization parameter enables reduced microwave reflection, as well as improved single-mode propagation inside the pipe as compared with conventional probes. Experimental verification, using straight brass pipes of various diameters confirmed that the optimized microwave probe exhibits a larger signal-to-noise ratio for internal flaws when compared with conventional probes, thereby validating the new optimization parameter.

Original languageEnglish
Pages (from-to)53-59
Number of pages7
JournalNDT and E International
Volume70
DOIs
Publication statusPublished - 2015 Mar

Keywords

  • Electromagnetic field analysis
  • Microwave probe design
  • Pipe-flaw inspection
  • Probe optimizing parameter

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Optimized microwave excitation probe for general application in NDT of wall thinning in metal pipes of arbitrary diameter'. Together they form a unique fingerprint.

Cite this