A Finite Element Study of the Differential Pick-up Coil and the Differential Excitation Coil for Eddy Current NDT

Guolong Chen*, Weimin Zhang, Xuanyi Gao, Xia Yu

*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

Differential excitation coils and differential pick-up probes for EC-NDT are qualitatively analyzed by using 3D FEA models. Eddy current density and magnetic flux density induced by the two types of probes in a conducting plate with/without defects are simulated and analyzed. The signals of the two types of probes for different lift-off heights are also simulated. Experiments are carried out using an aluminum plate with artificial defects. It is found that the sensitivity of the differential excitation probe is higher than the differential pick-up probe from both the simulation and experimental results.

Original languageEnglish
Title of host publicationElectromagnetic Nondestructive Evaluation (XVIII)
EditorsShejuan Xie, Zhenmao Chen, Yong Li
PublisherIOS Press
Pages133-140
Number of pages8
ISBN (Electronic)9781614995081
DOIs
Publication statusPublished - 2015
Event19th International Workshop on Electromagnetic Non-Destructive Evaluation, ENDE 2014 - Xi'an, China
Duration: 25 Jun 201428 Jun 2014

Publication series

NameStudies in Applied Electromagnetics and Mechanics
Volume40
ISSN (Print)1383-7281
ISSN (Electronic)1879-8322

Conference

Conference19th International Workshop on Electromagnetic Non-Destructive Evaluation, ENDE 2014
Country/TerritoryChina
CityXi'an
Period25/06/1428/06/14

Keywords

  • Differential Excitation Coils
  • Differential Pick-up Coils
  • Eddy Current NDT
  • Finite Element Analysis

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