Challenges in improving the performance of eddy current testing

AN AbdAlla, MA Faraj, F Samsuri… - Measurement and …, 2019 - journals.sagepub.com
Eddy current testing plays an important role in numerous industries, particularly in material
coating, nuclear and oil and gas. However, the eddy current testing technique still needs to …

[HTML][HTML] Eddy current measurement for planar structures

Z **a, R Huang, Z Chen, K Yu, Z Zhang, JR Salas-Avila… - Sensors, 2022 - mdpi.com
Eddy current (EC) testing has become one of the most common techniques for measuring
metallic planar structures in various industrial scenarios such as infrastructures, automotive …

Reducing the lift-off effect on permeability measurement for magnetic plates from multifrequency induction data

M Lu, W Zhu, L Yin, AJ Peyton, W Yin… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
Lift-off variation causes errors in eddy current measurement of nonmagnetic plates as well
as magnetic plates. For nonmagnetic plates, previous work has been carried out to address …

Measurement of coating thickness using lift-off point of intersection features from pulsed eddy current signals

Y Wang, M Fan, B Cao, B Ye, D Wen - NDT & E International, 2020 - Elsevier
In industries, the thickness measurement of non-ferromagnetic coatings on a ferromagnetic
substrate is a difficult problem. In this paper, we proposed a simple but liftoff insensitive …

Evaluation of defects depth for metal sheets using 4-coil excitation array eddy current sensor and improved ResNet18 network

S She, T Meng, X Zheng, Y Shao, G Hu… - IEEE Sensors …, 2024 - ieeexplore.ieee.org
Lift-off effect, resulting in detection error, which is a significant challenge that needs to be
addressed in defect detection using eddy current testing (ECT). A novel array eddy current …

Thickness measurement of metallic plates with finite planar dimension using eddy current method

R Huang, M Lu, A Peyton, W Yin - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Until now, the Dodd-Deeds model has been used to evaluate the inductance change in an
air-cored sensor in the presence of an infinitely large conducting plate. In practice, it can be …

Pulsed eddy current thickness measurement using phase features immune to liftoff effect

M Fan, B Cao, AI Sunny, W Li, G Tian, B Ye - Ndt & E International, 2017 - Elsevier
Conventionally, peak value and peak time are extracted from pulsed eddy current (PEC)
response as features for thickness measurement. However, they suffer from liftoff variations …

A novel conductivity measurement method for non-magnetic materials based on sweep-frequency eddy current method

Y **e, P Huang, Y Ding, J Li, H Pu… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Metallic plates are widely used in a variety of industrial applications, from which conductivity
is a key parameter related to the quality of metals. In order to accurately measure the …

Conductivity Lift-off Invariance and measurement of permeability for ferrite metallic plates

M Lu, H Xu, W Zhu, L Yin, Q Zhao, A Peyton, W Yin… - Ndt & E …, 2018 - Elsevier
In this paper, a Conductivity Invariance Phenomenon with a controlled lift-off is discovered
and studied. It is found that at certain lift-off, the effect of conductivity influence on inductance …

An eddy-current testing method for measuring the thickness of metallic plates

A Sardellitti, F Milano, M Laracca… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
Thickness measurements of metallic plates are mandatory in many industrial scenarios.
Methods based on eddy-current testing (ECT) are ideal for fast and accurate online …