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Author:

Xie, Yuedong (Xie, Yuedong.) | Rodriguez, Sergio (Rodriguez, Sergio.) | Zhang, Wenbo (Zhang, Wenbo.) | Liu, Zenghua (Liu, Zenghua.) (Scholars:刘增华) | Yin, Wuliang (Yin, Wuliang.)

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Scopus SCIE

Abstract:

Previously, we developed a method based on FEM and FDTD for the study of an Electromagnetic Acoustic Transducer Array (EMAT). This paper presents a new analytical solution to the eddy current problem for the meander coil used in an EMAT, which is adapted from the classic Deeds and Dodd solution originally intended for circular coils. The analytical solution resulting from this novel adaptation exploits the large radius extrapolation and shows several advantages over the finite element method (FEM), especially in the higher frequency regime. The calculated Lorentz force density from the analytical EM solver is then coupled to the ultrasonic simulations, which exploit the finite-difference time-domain (FDTD) method to describe the propagation of ultrasound waves, in particular for Rayleigh waves. Radiation pattern obtained with Hilbert transformon time-domain waveforms is proposed to characterise the sensor in terms of its beam directivity and field distribution along the steering angle, which can produce performance parameters for an EMAT array, facilitating the optimum design of such sensors.

Keyword:

Author Community:

  • [ 1 ] [Xie, Yuedong]Univ Manchester, Sch Elect & Elect Engn, Manchester M60 1QD, Lancs, England
  • [ 2 ] [Rodriguez, Sergio]Univ Manchester, Sch Elect & Elect Engn, Manchester M60 1QD, Lancs, England
  • [ 3 ] [Zhang, Wenbo]Univ Manchester, Sch Elect & Elect Engn, Manchester M60 1QD, Lancs, England
  • [ 4 ] [Yin, Wuliang]Univ Manchester, Sch Elect & Elect Engn, Manchester M60 1QD, Lancs, England
  • [ 5 ] [Liu, Zenghua]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Yin, Wuliang]Univ Manchester, Sch Elect & Elect Engn, Manchester M60 1QD, Lancs, England

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Source :

JOURNAL OF SENSORS

ISSN: 1687-725X

Year: 2016

Volume: 2016

1 . 9 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:166

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 9

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 11

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