Evaluation of fatigue cracks by an angle beam EMAT-ET dual probe

Tetsuya Uchimoto, Toshiyuki Takagi, Toshiaki Ichihara, Gerd Dobmann

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


In this study, the authors propose an EMAT-ET dual probe for evaluation of fatigue cracks. The probe consists of a permanent magnet, a meander-line coil to emit and receive shear-vertical waves propagating obliquely in the material to be inspected, and a racetrack-shaped coil to pick up the ET signals. The experimental results show that the EMAT and ET modes of the proposed probe can detect and size both, shallow and deep cracks on the back side of specimens, respectively, which indicates that the proposed probe provides reliable evaluation of fatigue cracks within a wide range of depth values.

Original languageEnglish
Pages (from-to)10-16
Number of pages7
JournalNDT and E International
Publication statusPublished - 2015 Jun


  • Dual probe
  • Eddy current testing
  • Electromagnetic acoustic transducer
  • Fatigue cracks
  • Ultrasonic testing

ASJC Scopus subject areas

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


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