Lorentz force evaluation with an extended area approach

A goal function scan based on an extended area approach is applied to determine size and depth of a defect in Lorentz force evaluation (LFE). Four datasets of a laminated aluminium specimen with a cylindrical defect at depths of 2, 4, 8 and 14 mm are simulated with the finite element method. LFE yields the correct defect sizes and depths for all four defects with a root mean square error of 0.95, 1.21, 1.57 and 4.41 %, respectively.