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Defect evaluation using the phase information of an EC-GMR sensor

  • Peng Gao
  • , Chao Wang*
  • , Yang Li
  • , Fanwei Li
  • , Yong Yan
  • , Yonghui Hu
  • *Corresponding author for this work
  • Tianjin University
  • University of Kent
  • North China Electric Power University

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

Abstract

Phase information is employed to enhance evaluating defects in the metals by eddy current testing using the conventional probes. But for an EC-GMR sensor, the output phase is not used. In this paper, GMR-based eddy current defect detection is studied, in which the phase of the GMR sensor output is taken into account. Based on Biot-Savart law, amplitude and phase for the EC-GMR sensor's output are studied. This paper shows that defect can be better located through the phase analysis of the GMR sensor's output.

Original languageEnglish
Title of host publication2014 IEEE International Instrumentation and Measurement Technology Conference
Subtitle of host publicationInstrumentation and Measurement for Sustainable Development, I2MTC 2014 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages25-29
Number of pages5
ISBN (Print)9781467363853
DOIs
StatePublished - 2014
Externally publishedYes
Event2014 IEEE International Instrumentation and Measurement Technology Conference: Instrumentation and Measurement for Sustainable Development, I2MTC 2014 - Montevideo, Uruguay
Duration: 12 May 201415 May 2014

Publication series

NameConference Record - IEEE Instrumentation and Measurement Technology Conference
ISSN (Print)1091-5281

Conference

Conference2014 IEEE International Instrumentation and Measurement Technology Conference: Instrumentation and Measurement for Sustainable Development, I2MTC 2014
Country/TerritoryUruguay
CityMontevideo
Period12/05/1415/05/14

Keywords

  • Angle information
  • Defect detection
  • Eddy current testing (ECT)
  • Giant magnetoresistance (GMR)

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