NDE of multiple cracks on the surface of materials by means of the potential drop technique

R. Ghajarieh, M. Saka, T. Sugawara, H. Abé, I. Komura, H. Sakamoto

研究成果: Article査読

11 被引用数 (Scopus)

抄録

A method is developed to evaluate nondestructively multiple cracks on the surface of materials. The method is based on the d.c. potential drop technique. Multiple two-dimensional cracks of unknown depth are inspected, where the distance between the cracks is known. First the distribution of the potential drop between both sides of each crack is measured on the cracked surface. Next the distribution of the potential drop is calculated numerically by assuming the depth of every crack. Then by comparing the measured and calculated potential drop, a correction factor is obtained for the assumed depth of the respective cracks. Modifying the crack depth by the correction factor is repeated until the difference between the measured and calculated distributions of the potential drop is minimized. It is shown that multiple cracks are sized accurately by the present method.

本文言語English
ページ(範囲)143-150
ページ数8
ジャーナルNDT and E International
27
3
DOI
出版ステータスPublished - 1994 6
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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