JSME International Journal Series A Solid Mechanics and Material Engineering
Online ISSN : 1347-5363
Print ISSN : 1344-7912
ISSN-L : 1344-7912
Analysis of Direct Current Potential Difference in a Multiple-Cracked Material
Naoya TADAYoshihito HAYASHITakayuki KITAMURARyuichi OHTANI
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1998 Volume 41 Issue 3 Pages 372-379


The electric field in a conductive material with multiple circular cracks was analyzed by means of crack-flow modification method(CFMM). It was found by the analysis that the increase in potential difference of the cracked material normalized by the potential difference without cracks, ΔV/V0, was in proportion to the product of the effective volumetric crack density and the mean of cubed crack radius, neff3]m. This universal relationship was also valid for multiple semi-circular cracks distributed on the surface of the material and gave the physical meaning of damage detected by the direct current electrical potential method.

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