Eddy Current Corner Crack Inspection

Measuring Thickness and Conductivity of Metallic Layers with Eddy Currents

“…Of the two coils, designated Land M, both we and others [10] have found the best agreement between experiment and theory (Eq. (2» for coil L; unless otherwise noted,the results we present below are for this coil.…”

A Model of Bolt Hole Inspection Via Eddy Current

“…The algorithm used here is a generalization of those described in the earlier reports [1][2][3]. Naturally, they share several common features: (a) they are based on the boundary integral equation (BIE) method, and use no particular approximation schemes except for the quasi-static approximation which, incidentally, remains good over a wide range of regular inspection conditions.…”

“…In this paper we report on the development of an eddy-current measurement model, which is a generalization of the one reported earlier [1][2]. Our objective is to establish a computer model that is capable of simulating eddy current NDE in generic inspection geometries.…”

“…Even worse, the geometry signal can be much larger than flaw signals in important areas such as edges and comers. As an example, an explicit study of the specimen edge effect was reported last year [2]. There, both straight edge specimens and bolt hole specimens with fatigue cracks were studied experimentally.…”

Numerical modeling of pulsed eddy current techniques for detection of corrosion and cracks

“…Relative permeability is not constant for any particular ferromagnetic material but varies with the magnitude of the magnetizing force. [16,17] have developed a BEM based model which is capable of simulating of eddy currents in generic inspection geometry.…”