A digital dual-phase lock-in amplifier for MFL and ECT NDT applications

• Main Authors: Mohd Aufa Hadi, Putera Zaini, Mohd Mawardi, Saari, Nurul A’in, Nadzri, Zulkifly, Aziz
• Format: Conference or Workshop Item
• Language: English
• Published: Springer, Singapore 2021
• Subjects: TK Electrical engineering. Electronics Nuclear engineering; TL Motor vehicles. Aeronautics. Astronautics
• Online Access: http://umpir.ump.edu.my/id/eprint/33554/1/A%20digital%20dual-phase%20lock-in%20amplifier.pdf; http://umpir.ump.edu.my/id/eprint/33554/; https://doi.org/10.1007/978-981-16-8690-0_86

In the electromagnetic methods of NDT, the separation of complex magnetic signals, i.e., Magnetic Flux Leakage (MFL) and Eddy Current (EC), is hard to be achieved. Therefore, the utilization of phase-sensitive detection technique of lock-in amplifier can be applied to overcome this problem. Furtherm...