Separation of the Elastic and Plastic Wave in Electromagnetically Induced Acoustic Emission Testing

被引：0
|
作者：
Cai, Zhichao [1 ]
Liu, Suzhen [1 ]
Yang, Qingxin [2 ]
Zhang, Chuang [1 ]
机构：
[1] Hebei Univ Technol, Tianjin 300130, Peoples R China
[2] Tianjin Polytech Univ, Tianjin 300160, Peoples R China
来源：
ADVANCES IN ACOUSTIC EMISSION TECHNOLOGY | 2015年 / 158卷
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1007/978-1-4939-1239-1_58
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this chapter, a developed electromagnetically induced acoustic emission technique (EMAE) which can be used for nondestructive flaw detection is introduced. This method is different from traditional acoustic emission testing (AET) in the behalf of locally electromagnetic force, which has a big advantage of contactless load. Based on the principle of electromagnetic acoustic transducers (EMAT), it causes the dynamic locally elastic vibration in the area of eddy current during the process of loading at the same time. Acoustic emission sensors receive the stress wave signal, which is the superposition of plastic wave and elastic wave. It is very meaningful to separate the elastic and plastic wave in EMAE. The results could enhance detection accuracy of small crack properties and acoustic emission signal.
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页码：633 / 642
页数：10
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