Utilization of two-directional AC current distribution for enhancing sizing ability of electromagnetic nondestructive testing methods

Ladislav Janousek, Noritaka Yusa, Kenzo Miya

研究成果: Article査読

11 被引用数 (Scopus)

抄録

This paper proposes a novel method for accurately evaluating the depth of a defect using electromagnetic phenomena. The novel method induces AC currents inside a conductive medium and detects the disturbance of the currents. Whereas the principle itself has been utilized in conventional methods, the uniqueness of this new method lies in realizing a current distribution in which there is a region where currents near the surface and those deeply inside the specimen flow opposite to each other. The novel method provides a clear indication corresponding to the depth of the inspected defect. In addition, it enables one to evaluate the depth of a defect that is much deeper than the depth of penetration. After the physical background of this new method is explained, the results of experimental verifications and subsequent numerical simulations are presented.

本文言語English
ページ(範囲)542-546
ページ数5
ジャーナルNDT and E International
39
7
DOI
出版ステータスPublished - 2006 10月
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 機械工学

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