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2018-12-27
Modelling and Evaluation of Electrical Resonance Eddy Current for Submillimeter Defect Detection
By
Progress In Electromagnetics Research C, Vol. 89, 101-110, 2019
Abstract
Eddy current (EC) inspection is used extensively in non-destructive testing (NDT) to detect surface-breaking defects of engineering components. However, the sensitivity of conventional eddy current inspection has plateaued in recent years. The ability to detect submillimetre defects before it becomes critical would allow engineering components to remain in-service safely for longer. Typically, it is required that higher frequency EC is employed to achieve a suitable sensitivity for detection of such submillimetre defects. However, that would lead to significant electromagnetic noise affecting the sensitivity of the inspection. To overcome this issue, the electrical-resonance based eddy current method has been proposed, where the electrical enhanced resonance signal increases the contrast between signal and noise, thus improving the sensitivity of the defect detection. This work aims to investigate the electrical-resonance system via simulation technology using combination of fast numerical-based simulation and circuit approach. Leveraging on this model, the detection system can be optimized by performing parameters tuning. Investigation of both experiment and simulation develops a precise calibration model for submillimeter defects detection.
Citation
Yew Li Hor, Vinod Kumar Sivaraja, Yu Zhong, Viet Phuong Bui, and Christopher Lane, "Modelling and Evaluation of Electrical Resonance Eddy Current for Submillimeter Defect Detection," Progress In Electromagnetics Research C, Vol. 89, 101-110, 2019.
doi:10.2528/PIERC18102902
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