Abstract
This paper presents a new non-destructive testing (NDT) method for the detection of defects in electrical conductors. The method distinguishes defect-embedded and defect-free conductors via the variation of angular velocity and electromagnetic torque on a single cylindrical permanent magnet.To demonstrate the feasibility of this method, numerical and experimental investigations have been performed. Quantitative relations between the electromagnetic torque, angular velocity and defect sizes have been obtained and can be considered as calibration functions for this new technique. This study demonstrates that this approach might offer an effective method of detecting the presence of defects in electrical conductors.
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