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- Title
A Pseudo-3D Model for Electromagnetic Acoustic Transducers (EMATs).
- Authors
Yin, Wuliang; Xie, Yuedong; Qu, Zhigang; Liu, Zenghua
- 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.
- Subjects
ELECTROACOUSTIC transducers; ANALYTICAL solutions; FINITE difference time domain method
- Publication
Applied Sciences (2076-3417), 2018, Vol 8, Issue 3, p450
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app8030450