Analysis on the applicability of direct current electrical potential method to the detection of damage by multiple small internal cracks

N. Tada, Y. Hayashi, T. Kitamura, R. Ohtani

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The direct current electric potential around a number of penny-shaped cracks was analyzed by Crack-Flow Modification Method (CFMM) in order to investigate the applicability of the Direct Current Electrical Potential Method (DC-EPM) to the detection of damage due to multiple small internal cracks. The potential difference was calculated for the cracking process in a smooth round bar specimen of a Type 304 stainless steel under a creep-fatigue condition. It was clarified by the analysis that, in the case of the present creep-fatigue test, damage could be detected at about a half of the lifetime assuming that a change of 1 percent in the potential difference was measurable by a voltmeter.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalInternational Journal of Fracture
Volume85
Issue number1
DOIs
Publication statusPublished - Jan 1 1997
Externally publishedYes

ASJC Scopus subject areas

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

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