Rotating uniform eddy current probe using four rectangular excitation coils with ferrite cores for cracks detection in conductive materials

Abstract In this study, we introduce a new rotating uniform eddy current (RUEC) probe designed to identify artificial cracks in conductive materials. The RUEC comprises four rectangular coils, divided into two sets of diagonally positioned coils. By providing alternating sources with 90° phase difference the distribution amplitude all directions can be produced on surface test specimen. Furthermore, ferrite cores are integrated coils enhance crack detection ability. To confirm that model produces RUECs specimen surface, conducted finite element method (FEM) simulations. We then experiments varying sizes experimental results demonstrate enabled successful probe.