Simulation of ultrasonic and EMAT arrays using FEM and FDTD

被引：35

作者：

Xie, Yuedong ^{[1
]}

Yin, Wuliang ^{[1
]}

Liu, Zenghua ^{[2
]}

Peyton, Anthony ^{[1
]}

机构：

[1] Univ Manchester, Sch Elect & Elect Engn, Manchester, Lancs, England

[2] Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

来源：

ULTRASONICS | 2016年 / 66卷

基金：

英国工程与自然科学研究理事会;

关键词：

Ultrasonic Testing (UT); Phased array; Electromagnetic acoustic transducer (EMAT); Finite difference time domain (FDTD); Finite element method (FEM); LINEAR PHASED-ARRAYS; ELECTROMAGNETIC ACOUSTIC TRANSDUCERS; THICKNESS MEASUREMENT; WAVE; DESIGN; PLATES; MODEL; STEEL;

D O I：

10.1016/j.ultras.2015.10.020

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper presents a method which combines electromagnetic simulation and ultrasonic simulation to build EMAT array models. For a specific sensor configuration, Lorentz forces are calculated using the finite element method (FEM), which then can feed through to ultrasonic simulations. The propagation of ultrasound waves is numerically simulated using finite-difference time-domain (FDTD) method to describe their propagation within homogenous medium and their scattering phenomenon by cracks. Radiation pattern obtained with Hilbert transform on time domain waveforms is proposed to characterise the sensor in terms of its beam directivity and field distribution along the steering angle. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：154 / 165

页数：12

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