Abstract
We designed exciting coils of uniform eddy current multiprobes with considering the shape of structures in order to obtain a uniform eddy current flow. A probe for a flat plate could obtain clear signals for an electrical discharge machining (EDM) slit of depth 0.5 mm and distinguish EDM slits arranged at 2 mm intervals. We confirmed that stress corrosion cracking (SCC) is detectable with sufficient sensitivity using the developed multiprobe. The probe for a curved portion obtained clear signals for the EDM slits on a curved surface of radius 25 mm. Moreover, we examined the technique for estimating crack shape from detection signals.
Keywords
Get full access to this article
View all access options for this article.