TY - JOUR
T1 - Thickness measurement of metal pipe using swept-frequency eddy current testing
AU - Mao, Xuefei
AU - Lei, Yinzhao
N1 - Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - Swept-frequency eddy current measurement of pipe thickness is studied in this paper. First, suitable frequency range of swept-frequency eddy current testing is determined by comparing sensitivities of relative reactance change with respect to pipe thickness and other parameters at different frequencies. Based on analytical solutions to pipe eddy current field, Levenberg-Marquardt algorithm and variable transformation, a method for solving inverse eddy current problem is developed. Finally, several inversion calculations are carried out and the results are close to the truth values. The low errors reveal that the method presented in this paper is appropriate.
AB - Swept-frequency eddy current measurement of pipe thickness is studied in this paper. First, suitable frequency range of swept-frequency eddy current testing is determined by comparing sensitivities of relative reactance change with respect to pipe thickness and other parameters at different frequencies. Based on analytical solutions to pipe eddy current field, Levenberg-Marquardt algorithm and variable transformation, a method for solving inverse eddy current problem is developed. Finally, several inversion calculations are carried out and the results are close to the truth values. The low errors reveal that the method presented in this paper is appropriate.
KW - Analytical solution
KW - Inverse eddy current problem
KW - Pipe thickness measurement
KW - Swept-frequency eddy current testing
UR - http://www.scopus.com/inward/record.url?scp=84947924534&partnerID=8YFLogxK
U2 - 10.1016/j.ndteint.2015.11.001
DO - 10.1016/j.ndteint.2015.11.001
M3 - Article
AN - SCOPUS:84947924534
SN - 0963-8695
VL - 78
SP - 10
EP - 19
JO - NDT and E International
JF - NDT and E International
ER -