Enhanced acoustic emission detection induced by electromagnetic stimulation with external magnetic field

Liang Jin, Qingxin Yang, Suzhen Liu, Chuang Zhang, Guizhi Xu, Weili Yan, Weinong Fu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

This paper introduces a new electromagnetically induced acoustic emission technology (EMAE) enhanced by an external magnetic field. The external magnetic field generated by Nd-Fe-B magnet can improve the ability of detecting the defects, due to the even bigger deformation generated by the enhanced Lorentz Force. In this paper, the finite-element model of EMAE including an external magnetic field has been implemented in accordance with the practical experiment models. The sample's deformation has been analyzed when the exciting coil locates at different positions. The experiment of EMAE is built according to the finite-element analysis (FEA) results. Experiments' outcomes indicate that the defect itself can generate modulated acoustic emission signals, which could be used to boost the detection ability of small cracks in the thin-walled metallic structures.
Original languageEnglish
Article number6027681
Pages (from-to)3284-3287
Number of pages4
JournalIEEE Transactions on Magnetics
Volume47
Issue number10
DOIs
Publication statusPublished - 1 Oct 2011

Keywords

  • Acoustic emission
  • electromagnetic forces
  • nondestructive testing
  • ultrasonic

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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