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

✍ Scribed by Noritaka Yusa; Hidetoshi Hashizume

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
203 KB
Volume
44
Category
Article
ISSN
0963-8695

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✦ Synopsis

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.

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