Skip to main content

Research Repository

Advanced Search

Point-Focusing Shear-Horizontal Guided Wave EMAT Optimization Method Using Orthogonal Test Theory

Sun, Hongyu; Wang, Shen; Huang, Songling; Peng, Lisha; Wang, Qing; Zhao, Wei; Zou, Jun

Point-Focusing Shear-Horizontal Guided Wave EMAT Optimization Method Using Orthogonal Test Theory Thumbnail


Authors

Hongyu Sun

Songling Huang

Lisha Peng

Wei Zhao

Jun Zou



Abstract

As a class of devices used in sound detection, electromagnetic acoustic transducers (EMATs) have been widely used in the field of nondestructive testing (NDT) owing to their advantages such as contact-free operation, wide applicability, and high performance. However, their low energy-conversion efficiency is the main drawback that limits usage in industrial testing. In this work, we report the effect of different parameters of the point-focusing shear-horizontal EMAT (PFSH-EMAT) on the signal intensity of the receiving transducer. The impact factors of the focusing transducer are as follows: number of magnets in a row m, fan-shaped periodic permanent magnet (FPPM) remanence magnetization Br, coil width w, coil winding number n, aperture angle θ, focal length lF, lift-off distance hl, excitation current frequency fc, and current amplitude Ic. To improve the analysis efficiency, an L32 (49) orthogonal table is used to investigate the nine different factors at four levels, which can be calculated through finite element simulations. The effect of each factor on the signal intensity is obtained by range analysis, and the optimal combination of these impact factors can be achieved by reasonable level selection. Through range analysis, the influence degree of each factor is obtained, and the parameter combination is optimized by analyzing the test results to improve the PFSH-EMAT’s performance. The experimental results show that the optimized PFSH-EMAT is 170% more efficient than the average of the top-three signal intensities in the orthogonal test, which proves the effectiveness of the proposed optimization method.

Citation

Sun, H., Wang, S., Huang, S., Peng, L., Wang, Q., Zhao, W., & Zou, J. (2020). Point-Focusing Shear-Horizontal Guided Wave EMAT Optimization Method Using Orthogonal Test Theory. IEEE Sensors Journal, 20(12), 6295-6304. https://doi.org/10.1109/jsen.2020.2976198

Journal Article Type Article
Acceptance Date Feb 11, 2020
Online Publication Date Feb 24, 2020
Publication Date Jun 30, 2020
Deposit Date Jun 9, 2020
Publicly Available Date Jun 9, 2020
Journal IEEE Sensors Journal
Print ISSN 1530-437X
Electronic ISSN 1558-1748
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 20
Issue 12
Pages 6295-6304
DOI https://doi.org/10.1109/jsen.2020.2976198
Public URL https://durham-repository.worktribe.com/output/1300529

Files

Accepted Journal Article (1.4 Mb)
PDF

Copyright Statement
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.






You might also like



Downloadable Citations