A Novel Pulsed Eddy Current Criterion for Non-Ferromagnetic Metal Thickness Quantifications under Large Liftoff

• Published in: Sensors (Basel, Switzerland) Vol. 22; no. 2; p. 614
• Main Authors: Wang, Haowen, Huang, Jiangbo, Liu, Longhuan, Qin, Shanqiang, Fu, Zhihong
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.01.2022; MDPI
• Subjects: Aluminum; Analysis; Conductors; dynamic apparent time constant; Eddy currents; Ferromagnetism; Inspection; Insulating layers; Investigations; lift-off variations; Noise; Nondestructive testing; Permeability; pulsed eddy current; Structural health monitoring; Thickness; thickness quantifications; Time constant; dynamic apparent time constant; lift-off variations; pulsed eddy current; thickness quantifications

The pulsed eddy current (PEC) inspection is considered a versatile non-destructive evaluation technique, and it is widely used in metal thickness quantifications for structural health monitoring and target recognition. However, for non-ferromagnetic conductors covered with non-uniform thick insulati...