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[1]张晓冰,房 琦,苏曰亮,等.用于检测厚铝板缺陷的体波 EMAT优化方法[J].电机与控制学报,2017,21(01):108-114.[doi:TG115.28]
 ZHANGXiao-bing FANG Qi,SU Ri-liang,KANGLei.Optimal methodof bulkwave EMATs usedinthickaluminum plate with single flat-bottom hole[J].,2017,21(01):108-114.[doi:TG115.28]
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用于检测厚铝板缺陷的体波 EMAT优化方法(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
21
期数:
2017年01
页码:
108-114
栏目:
出版日期:
2017-01-01

文章信息/Info

Title:
Optimal methodof bulkwave EMATs usedinthickaluminum plate with single flat-bottom hole
作者:
张晓冰房 琦苏曰亮康磊
?(1.哈尔滨理工大学测控与通信工程学院,黑龙江哈尔滨150080; 2.哈尔滨工业大学电气工程及其自动化学院,黑龙江哈尔滨150001)
Author(s):
ZHANGXiao-bing1 FANG Qi1 SU Ri-liang2 KANGLei2
?(1. School of Measurement-Control Technology and Communications Engineering Harbin University of Science and Technology Harbin 150080,China;2. School of Electrical Engineering and Automation, Harbin Institute of Technology Harbin 150001,China)
关键词:
电磁超声换能器体波有限元模型正交试验法缺陷检测
Keywords:
EMAT bulk wave finite element model orthogonal test method defect detection
分类号:
10.15938/j.emc.2017.01.015
DOI:
TG115.28
文献标志码:
A
摘要:
?针对电磁超声换能器 (electromagnetic acoustic transducer, EMAT)的换能效率低, 易受外界 环境噪声影响导致回波信号较小、信噪比较低的问题, 提出一种使用正交试验的优化方法进行改 进。该方法基于电磁场涡流效应、质点弹性动力学的波动方程及有限元法, 建立了一个检测厚铝板 单平底孔缺陷、收发一体的体波 EMAT 二维有限元模型。该模型应用正交试验和极差分析法,通 过对比不同结构下的缺陷回波电压信号强弱程度, 分析磁铁和线圈的结构参数对其的影响, 获得了 优化的模型结构参数值。同时, 得出在本结构下磁铁与线圈的最佳宽度比。通过实验验证了优化 结果的有效性,缺陷回波电压峰-峰值的实验与仿真结果相符。
Abstract:
?Aiming at the problem that the transduction efficiency of electromagnetic acoustic transducers (EMATs) is relatively poor,easily affected by the noise of external environment,which result in small echo signal and low SNR,an optimization method using orthogonal test was introduced. According to the the〇r of electromagnetics eddy current effect,particle elastodynamics wave equation,and finite element method,a two-dimensional finite element model was established for the bulk wave EMATs in the pulseecho arrangement,operating on the thick aluminum plate with a single flat-bottom hole. The orthogonal test and extreme difference analysis were applied to consider the parameters of the magnet and coil,which impact on defect echo signal voltage value in different construct,and the optimized model parameters were obtained. Meanwhile,the optimal ratio of magnet width and coil width is gained in this structure. The optimized result validity is verified by the experimental results. It is shown that the experimental peak-peak value of defect reflected waves are in good agreement witli simulation.

参考文献/References:

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相似文献/References:

[1]刘素贞,李丽滨,张闯,等. 电磁超声特征信号检测系统的设计[J].电机与控制学报,2017,21(09):103.[doi:10.15938/j.emc.2017.09.014]
 LIU Su-zhen,LI Li-bin,ZHANG Chuang,et al. Design of characteristic signals detecting system for electromagnetic ultrasonic[J].,2017,21(01):103.[doi:10.15938/j.emc.2017.09.014]

备注/Memo

备注/Memo:
收稿日期:2015-11-03
基金项目:国家自然科学基金(11304067)
作者简介:张晓冰(1962—),女,博士,教授,研究方向为电气测量技术与系统、智能检测技术与仪器;
房琦(1989—),女,硕士研究生,研究方向为电磁超声无损检测;
苏日亮(1986—),男,博士,研究方向为电磁超声无损检测;
康磊(1981—),男,博士,讲师,研究方向为电磁超声无损检测。
更新日期/Last Update: 2017-03-29