Four-terminal measurement of the distribution of electrical resistance across stress corrosion cracking

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Abstract

This study measures electrical resistance of a stress corrosion crack directly by the four-terminal method to discuss appropriate modeling from the viewpoint of electromagnetic nondestructive evaluation. Two type-316 stainless steel plate specimens containing artificial stress corrosion cracks were prepared, and columnar samples containing penetrating cracks were cut from the plates for the measurements. The results obtained agree with recent reports discussing appropriate numerical modeling of stress corrosion cracking on the basis of finite element simulations. In contrast, this study also reveals that it is not always valid to assume that a stress corrosion crack has uniform conductivity internally.

Original languageEnglish
Pages (from-to)544-546
Number of pages3
JournalNDT and E International
Volume44
Issue number7
DOIs
Publication statusPublished - 2011 Nov 1

Keywords

  • Austenitic stainless steel
  • Contacts
  • Electrical properties
  • Electromagnetic nondestructive evaluation
  • Metals and alloys
  • Simulation and modeling

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering
  • Condensed Matter Physics

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