Experimental Analysis of Acoustic Signal Detection Using Extensional Stress Wave Along the Periodic Simulated Drillstring

2010 ◽  
Author(s):  
Li Cheng ◽  
Ding Tianhuai
Keyword(s):  
Signal Detection ◽  
Stress Wave ◽  
Acoustic Signal ◽  
Experimental Analysis ◽  
Extensional Stress

LFM Signal Detection Method Based on Fractional Fourier Transform

2014 ◽  
Vol 989-994 ◽  
pp. 4001-4004 ◽  
Author(s):  
Yan Jun Wu ◽  
Gang Fu ◽  
Yu Ming Zhu
Keyword(s):  
Fourier Transform ◽  
Signal Detection ◽  
Frequency Analysis ◽  
Experimental Analysis ◽  
Fractional Fourier Transform ◽  
Detection Method ◽  
Time Frequency Analysis ◽  
Time Frequency ◽  
Frequency Information ◽  
Strong Impulse

As a generalization of Fourier transform, the fractional Fourier Transform (FRFT) contains simultaneity the time-frequency information of the signal, and it is considered a new tool for time-frequency analysis. This paper discusses some steps of FRFT in signal detection based on the decomposition of FRFT. With the help of the property that a LFM signal can produce a strong impulse in the FRFT domain, the signal can be detected conveniently. Experimental analysis shows that the proposed method is effective in detecting LFM signals.

High-sensitivity Elastomer Design for Fiber-based Acoustic Signal Detection

2021 ◽  
Author(s):  
Zihan Liang ◽  
Zhengting Wu ◽  
Huanhuan Liu ◽  
Hong Dang ◽  
Luoyuan Liao ◽  
...  
Keyword(s):  
Signal Detection ◽  
Acoustic Signal ◽  
High Sensitivity

Acoustic Emission-Based Experimental Analysis of Mechanical Stress Wave in IGBT Device

2020 ◽  
Vol 20 (11) ◽  
pp. 6064-6074 ◽  
Author(s):  
Mengchuan Li ◽  
Yunze He ◽  
Zhiqiang Meng ◽  
Jun Wang ◽  
Xiang Zou ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Mechanical Stress ◽  
Stress Wave ◽  
Experimental Analysis
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