Evaluation of stress corrosion cracking as a function of its resistance to eddy currents

研究成果: Article査読

21 被引用数 (Scopus)


This study discusses the equivalent conductivity, the equivalent width, and the equivalent resistance of stress corrosion cracks from the viewpoint of eddy current testing. Four artificial stress corrosion cracks were prepared for this study, and their eddy current signals were gathered using two absolute pancake probes and two differential type plus point probes. Then their numerical models were evaluated using finite element simulations on the basis of the measured eddy current signals and their profiles revealed by destructive tests. The results of this study revealed that whereas the equivalent conductivity and the equivalent width depend on the exciting frequency utilized, the equivalent resistance of a crack has much less dependency, which agrees well with an earlier report. This study also revealed that the resistance of a crack depends on probe utilized. Larger probes tend to lead to smaller crack resistance. Pancake type probes tend to lead to larger crack resistance than plus point probes. Analyzing the results together with earlier reports indicates that cracks with a large equivalent conductivity tend to have large equivalent width, and supports the validity of assuming the minimum resistance of a stress corrosion crack whereas considering the conductivity and the width individually would not be viable.

ジャーナルNuclear Engineering and Design
出版ステータスPublished - 2009 12月 1

ASJC Scopus subject areas

  • 原子力エネルギーおよび原子力工学
  • 機械工学
  • 安全性、リスク、信頼性、品質管理
  • 材料科学(全般)
  • 核物理学および高エネルギー物理学
  • 廃棄物管理と処理


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