Amplitude Characteristics of Acoustic Emission Signals Induced by Electromagnetic Exciting

被引：7
|
作者：
Jin, Liang [1 ]
Liu, Suzhen [2 ]
Zhang, Chuang [2 ]
Yang, Qingxin [1 ,2 ]
Li, Ying [2 ]
Yan, Weili [2 ]
Zhang, Xian [1 ]
Li, Yang [1 ]
机构：
[1] Tianjin Polytech Univ, Key Lab Adv Elect Engn & Energy Technol, Tianjin 300387, Peoples R China
[2] Hebei Univ Technol, Prov Minist, Joint Key Lab Electromagnet Field & Elect Apparat, Tianjin 300130, Peoples R China
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2012年 / 48卷 / 11期
关键词：
Eddy current exciting; electromagnetically induced acoustic emission (EMAE); metal plate crack detection; STIMULATION;
D O I：
10.1109/TMAG.2012.2196419
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The amplitude characteristics of electromagnetically induced acoustic emission (EMAE) are studied through the finite-element method (FEM) and validated by EMAE experiment. The deformation of a crack is calculated and analyzed by using FEM, and the deformation nature of the defect is determined by the fracture mechanics. The EMAE experiments under different exciting currents are carried out and the crack is located by acoustic emission (AE) signals. In addition, the calculated deformation and experimental AE signals are normalized. According to Kaiser effect and AE theory, the partly direct relationship between the acoustic emission signal and the calculated deformation can be obtained. This study provides crucial references for optimization analysis of EMAE. Meanwhile, the application of eddy current greatly reduces the demands of the power supply and improves the detection speed compared using the direct loading, which makes the engineering application of EMAE in possible.
引用
收藏
页码：2953 / 2956
页数：4
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