- Title
- Design of a lock-in amplifier integrated with a coil system for eddy-current non-destructive inspection
- Creator
- Munoz, Fredy; Miro, Jaime Valls; Dissanayake, Gamini; Ulapane, Nalika; Nguyen, Linh
- Date
- 2017
- Type
- Text; Conference proceedings
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/183930
- Identifier
- vital:16385
- Identifier
-
https://doi.org/10.1109/ICIEA.2017.8283157
- Identifier
- ISBN: 2158-2297
- Abstract
- Eddy-current non-destructive inspections of conductive components are of great interest in several industries including civil infrastructure and the mining industry. In this work, we have used a driver-pickup coil system as the probe to carry out inspection of ferromagnetic plates. The specific geometric configuration of the probe generates weak electric signals that are buried in a noisy environment. In order to detect these weak signals, we have designed and implemented a lock-in amplifier as part of the signal processing technique to increase the signal-to-noise ratio and also improve the sensitivity of the probe. We have used Comsol as a finite element method (FEM) to design the probe and conducted experiments with the probe and the lock-in amplifier. The experimental results, which are in agreement with the FEM results, indicate that the designed probe along with a lock-in amplifier can potentially be used to estimate the thickness of thin plates.
- Publisher
- IEEE
- Relation
- 12th IEEE Conference on Industrial Electronics and Applications (ICIEA); Siem Reap, Cambodia; 18-20 June 2017 p. 1948-1953
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- Copyright IEEE
- Subject
- Cast iron; Finite element analysis; Inspection; Probes; Sensitivity; Signal to noise ratio; Voltage measurement
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