Research on Electromagnetically Acoustic Emission Signals Using Sample Entropy

Author

Liu, Suzhen ; Li, Jiao ; Zhang, Chuang ; Shen, Xueqin ; Jin, Liang ; Yang, Qingxin

Author_Institution

Province-Minist. Joint Key Lab. of Electromagn., Hebei Univ. of Technol., Tianjin, China

fYear

2012

fDate

19-21 June 2012

Firstpage

1

Lastpage

4

Abstract

As a new approach of measuring the irregularity of the time series, Sample entropy (SampEn), which is defined as a quantity measuring the rate of information generation, has good anti-jamming capability. In this work, successful researches are performed to analyze the electromagnetically induced acoustic emission (EMAE) signal produced by loading pulse current in the aluminium plates, using SampEn. Besides, it studies the complexity of EMAE signal changing over time, identifies and extracts features of EMAE signal. The SampEn´s performance on characterizing the signals, demonstrates that SampEn is a promising method in recognition and distinguishment of EMAE signal.

Keywords

acoustic emission; acoustic signal processing; entropy; feature extraction; jamming; nondestructive testing; time series; EMAE signal distinguishment; EMAE signal recognition; SampEn; aluminium plate; antijamming capability; electromagnetically acoustic emission signal; feature extraction; information generation; loading pulse current; nondestructive testing; sample entropy; time series irregularity; Acoustic emission; Aluminum; Complexity theory; Entropy; Loading; Time series analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Field Problems and Applications (ICEF), 2012 Sixth International Conference on

Conference_Location

Dalian, Liaoning

Print_ISBN

978-1-4673-1333-9

Type

conf

DOI

10.1109/ICEF.2012.6310399

Filename

6310399