Frequency component mixing of pulsed or multi-frequency eddy current testing for nonferromagnetic plate thickness measurement using a multi-gene genetic programming algorithm

For the efficient use of frequency components, a frequency mixed feature for pulsed eddy current testing (PECT) or multi-frequency eddy current testing (MultiECT) was proposed for nonferromagnetic plate thickness measurement. An evolutionary algorithm multigene genetic programming was employed to mi...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:NDT & E international : independent nondestructive testing and evaluation Ročník 120; s. 102423
Hlavní autoři: Ge, Jiuhao, Yusa, Noritaka, Fan, Mengbao
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 01.06.2021
Témata:
Eddy current testing
Genetic programming
Gini coefficient
Linearity
Gini coefficient
Linearity
Genetic programming
Eddy current testing
ISSN:0963-8695, 1879-1174
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:For the efficient use of frequency components, a frequency mixed feature for pulsed eddy current testing (PECT) or multi-frequency eddy current testing (MultiECT) was proposed for nonferromagnetic plate thickness measurement. An evolutionary algorithm multigene genetic programming was employed to mix the frequency components using the best linearity as a target. Time domain and frequency domain finite element simulations of PECT and MultiECT were conducted. The simulation results revealed that, in terms of thickness measurement, a mixed feature comprising two or three frequencies was more linear and accurate than the traditional peak time and decay coefficient of PECT. Experiments were conducted to validate the results of the simulations and to test the mixed feature in aluminum plate thickness evaluations. The experimental results also revealed that the use of more frequencies did not always increase the accuracy of thickness evaluations. Proper frequency component selection was more efficient than blindly increasing frequency numbers. •Gini coefficient is used to indicate linearity between feature and thickness.•The mixed feature comprising two or three frequencies is better than the peak time and decay coefficient of PECT.•The use of more frequencies does not always increase the accuracy of thickness evaluations.
ISSN:0963-8695
1879-1174
DOI:10.1016/j.ndteint.2021.102423