Wall Thinning Assessment for Ferromagnetic Plate with Pulsed Eddy Current Testing Using Analytical Solution Decoupling Method
The wall-thinning measurement of ferromagnetic plates covered with insulations and claddings is a main challenge in petrochemical and power generation industries. Pulsed eddy current testing (PECT) is considered as a promising method. However, the accuracy is limited due to the interference factors...
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MDPI AG
2021-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/10/4356 |
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| author | Qing Zhang Xinjun Wu |
| author_facet | Qing Zhang Xinjun Wu |
| author_sort | Qing Zhang |
| collection | DOAJ |
| description | The wall-thinning measurement of ferromagnetic plates covered with insulations and claddings is a main challenge in petrochemical and power generation industries. Pulsed eddy current testing (PECT) is considered as a promising method. However, the accuracy is limited due to the interference factors such as lift-off and cladding. In this study, by decoupling analytic solution, a feature only sensitive to plate thickness is proposed. Based on the electromagnetic waves reflection and transmission theory, cladding-induced interference is firstly decoupled from the analytical model. Moreover, by using the first integral mean value theorem, interferences of insulation and the lift-off are decoupled, too. Hence, the method is proposed by calculating Euclidean distances between the normalized detection signal and normalized reference signal as the feature to assess wall thinning. Its effectiveness under various conditions is examined and results show that the proposed feature is only sensitive to the ferromagnetic plate thickness. Finally, the experiment is carried on to verify this method practicable. |
| first_indexed | 2024-03-10T11:31:28Z |
| format | Article |
| id | doaj.art-2e4be2794e1f4d2fa7525a4539dc3091 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T11:31:28Z |
| publishDate | 2021-05-01 |
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| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-2e4be2794e1f4d2fa7525a4539dc30912023-11-21T19:11:00ZengMDPI AGApplied Sciences2076-34172021-05-011110435610.3390/app11104356Wall Thinning Assessment for Ferromagnetic Plate with Pulsed Eddy Current Testing Using Analytical Solution Decoupling MethodQing Zhang0Xinjun Wu1College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaSchool of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaThe wall-thinning measurement of ferromagnetic plates covered with insulations and claddings is a main challenge in petrochemical and power generation industries. Pulsed eddy current testing (PECT) is considered as a promising method. However, the accuracy is limited due to the interference factors such as lift-off and cladding. In this study, by decoupling analytic solution, a feature only sensitive to plate thickness is proposed. Based on the electromagnetic waves reflection and transmission theory, cladding-induced interference is firstly decoupled from the analytical model. Moreover, by using the first integral mean value theorem, interferences of insulation and the lift-off are decoupled, too. Hence, the method is proposed by calculating Euclidean distances between the normalized detection signal and normalized reference signal as the feature to assess wall thinning. Its effectiveness under various conditions is examined and results show that the proposed feature is only sensitive to the ferromagnetic plate thickness. Finally, the experiment is carried on to verify this method practicable.https://www.mdpi.com/2076-3417/11/10/4356pulsed eddy current testingthickness measurementanalytical modelsimilarity measurement |
| spellingShingle | Qing Zhang Xinjun Wu Wall Thinning Assessment for Ferromagnetic Plate with Pulsed Eddy Current Testing Using Analytical Solution Decoupling Method Applied Sciences pulsed eddy current testing thickness measurement analytical model similarity measurement |
| title | Wall Thinning Assessment for Ferromagnetic Plate with Pulsed Eddy Current Testing Using Analytical Solution Decoupling Method |
| title_full | Wall Thinning Assessment for Ferromagnetic Plate with Pulsed Eddy Current Testing Using Analytical Solution Decoupling Method |
| title_fullStr | Wall Thinning Assessment for Ferromagnetic Plate with Pulsed Eddy Current Testing Using Analytical Solution Decoupling Method |
| title_full_unstemmed | Wall Thinning Assessment for Ferromagnetic Plate with Pulsed Eddy Current Testing Using Analytical Solution Decoupling Method |
| title_short | Wall Thinning Assessment for Ferromagnetic Plate with Pulsed Eddy Current Testing Using Analytical Solution Decoupling Method |
| title_sort | wall thinning assessment for ferromagnetic plate with pulsed eddy current testing using analytical solution decoupling method |
| topic | pulsed eddy current testing thickness measurement analytical model similarity measurement |
| url | https://www.mdpi.com/2076-3417/11/10/4356 |
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