The Research of Plants' Water Stress Acoustic Emission Signal Processing Methods

2011 ◽  
Author(s):  
Yang Liu ◽  
Zhang Junmei ◽  
Luo Xiaoli ◽  
Kan Jiangming ◽  
Yang Kai
Keyword(s):  
Signal Processing ◽  
Acoustic Emission ◽  
Water Stress ◽  
Acoustic Emission Signal ◽  
Processing Methods ◽  
Emission Signal ◽  
Signal Processing Methods

The Research on Leak Detection Technology of Natural Gas Pipeline Based on EMD

2014 ◽  
Vol 494-495 ◽  
pp. 793-796 ◽  
Author(s):  
Chuan Jiang Li ◽  
Jia Pan Zhang ◽  
Zi Qiang Zhang ◽  
Ju Li Hu ◽  
Yi Li
Keyword(s):  
Acoustic Emission ◽  
Acoustic Emission Signal ◽  
Leakage Detection ◽  
Intrinsic Mode Functions ◽  
Emission Signal ◽  
Natural Gas Pipeline ◽  
Detection Technology ◽  
Mode Decomposition ◽  
Leakage Characteristics ◽  
Signal Processing Methods

The acoustic emission signal of pipeline leakage is characterized by nonlinear and non-stationary. It is not feasible to extract the leakage feature signal in traditional signal processing methods. The leak locations can be detected by employing the improved empirical mode decomposition (EMD) to decompose the acoustic emission signal into several intrinsic mode functions (IMF), choosing IMFs containing leakage characteristics to be reconstructed, and doing correlation analysis. Experimental results show that the positioning accuracy of leakage detection is improved obviously.

scholarly journals Acoustic emission signal processing framework to identify fracture in aluminum alloys

2019 ◽  
Vol 210 ◽  
pp. 367-380 ◽  
Author(s):  
B. Wisner ◽  
K. Mazur ◽  
V. Perumal ◽  
K.P. Baxevanakis ◽  
L. An ◽  
...  
Keyword(s):  
Signal Processing ◽  
Acoustic Emission ◽  
Aluminum Alloys ◽  
Acoustic Emission Signal ◽  
Emission Signal ◽  
Processing Framework
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