A pseudo – 3D model for Electromagnetic Acoustic Transducers (EMATs)

Wuliang Yin, Yuedong Xie, Zhigang Qu, Zenghua Liu

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Previous methods for modelling Rayleigh waves produced by a meander-line-coil electromagnetic acoustic transducer (EMAT) consisted mostly of two-dimensional (2D) simulations that focussed on the vertical plane of the material. This paper presents a pseudo-three-dimensional (3D) model that extends the simulation space to both vertical and horizontal planes. For the vertical plane, we combines analytical and finite-difference time-domain (FDTD) methods to model Rayleigh waves’ propagation within an aluminium plate and their scattering behaviours by cracks. For the horizontal surface plane, we employ an analytical method to investigate the radiation pattern of Rayleigh waves at various depths. The experimental results suggest that the models and the modelling techniques are valid.
    Original languageEnglish
    JournalApplied Sciences
    DOIs
    Publication statusPublished - 15 Mar 2018

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