Eddy current testing of metallic sheets with defects using force measurements

Abstract

The problem of determining defects in structures using eddy current methods was investigated. The goal of this work is to demonstrate that the forces generated by the eddy currents and acting back on the magnet system can be used to detect defects in the object. Numerical simulations and experimental investigations have been performed. This novel technique has been found to be sensitive enough to detect even deep defects in an Aluminium bar moving relative to the field-generating magnet system.

Keywords

• computational electromagnetics
• non-destructive evaluation
• eddy current testing
• lorentz force