Time Delay Estimation for Acoustic Source Location by Means of Short-Time Cross-Correlation

被引：0
|
作者：
Le Duff, Alain [1 ,2 ]
Hamdi, Seif Eddine [1 ,2 ]
Plantier, Guy [1 ,2 ]
Lascoup, Bertrand [3 ]
机构：
[1] Grp ESEO, GSII, 4 Rue Merlet de la Boulaye,BP30926, F-49009 Angers 01, France
[2] Univ Maine, Lab Acoustique, CNRS UMR 6613, F-72085 Le Mans 09, France
[3] Parc Univ Laval Change, ESTACA, F-53061 Lavel 9, France
来源：
2011 IEEE SENSORS | 2011年
关键词：
EMISSION; COMPOSITES;
D O I：
暂无
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：
This article presents a method which can be used for online Acoustic Emission (AE) source location in a composite plate by means of time delay estimations. A short-time cross-correlation function from the envelope of the two signals, has been developed. This method allows to estimate the time delay in the early coherent part of the signals, which is especially suitable in a very dispersive medium such as composite material. Experimental results, obtained with a glass-fiber/epoxy plate equipped with piezoelectric transducers, show that a balance of simplicity, accuracy and robustness can be achieved by using this method.
引用
收藏
页码：1885 / 1888
页数：4
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