Development of an ultrasonic monitoring system using EMAT and wireless communication

Toshiyuki Takagi, Tetsuya Uchimoto, Toshiaki Ichihara, Kazumi Yashima, Toshihiko Abe

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The aim of this research is to make a high performance EMAT, highly sensitive, with low electric power consumption and wireless data communication. For this purpose, we introduced the following new devices and techniques into the EMAT: 1) A high efficiency power supply circuit to generate a strong oscillating magnetic field in the excitation coil, and 2) Effective use of high quality noise reduction to increase S/N ratio of the received signal. This EMAT system detects fatigue cracks in thick austenitic stainless steel 316L specimens by angle beam inspection as well as detecting EDM slits by the normal beam method.

Original languageEnglish
Title of host publicationElectromagnetic Nondestructive Evaluation (XIII)
EditorsJeremy Knopp, Mark Blodgett, Jeremy Knopp, Mark Blodgett, Buzz Wincheski, Nicola Bowler, Buzz Wincheski, Nicola Ames
Number of pages6
Publication statusPublished - 2010

Publication series

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


  • angle beam
  • EMAT
  • fatigue crack
  • meander coil
  • normal beam


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