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  2. 地质与地球物理研究所
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  4. 中国科学院页岩气与地质工程重点实验室
Novel method for detecting weak acoustic emission signals based on the similarity of time-frequency spectra

文献类型：期刊论文

作者Yang, Wencheng1,3; Li, Xiao1,3,5; Wang, Yibo2,4; Zheng, Yue4; Guo, Peng1,3,5
刊名GEOPHYSICS
出版日期2022-03-01
卷号87期号:2页码:V143-V154
ISSN号0016-8033
DOI10.1190/GEO2020-0842.1
英文摘要The acoustic emission (AE) technique has played a critical role in characterizing the fracturing process during laboratory rock mechanics experiments. However, this method is limited by low signal-to-noise ratio (S/N) because of significant noise in the measurement and environment and inaccurate AE location. Furthermore, it is difficult to distinguish two or more hits because their arrival times are very close when AE signals are mixed with strong background noise. Thus, we have developed a new method for detecting weak AE signals using the mathematical morphology (MM) character correlation of the time-frequency spectrum. The character in all hits of an AE event can be extracted from time-frequency spectra based on the theory of MM. Through synthetic and real data experiments, we determined that this method accurately identifies weak AE signals. Compared with conventional methods, our approach can detect AE signals with a lower S/N.
WOS关键词MORPHOLOGY ; TRANSFORM ; FRACTURE ; FAULTS
资助项目National Natural Science Foundation of China[42090023] ; National Natural Science Foundation of China[42102323] ; National Natural Science Foundation of China[42002279]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000887918500006
出版者SOC EXPLORATION GEOPHYSICISTS
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/107671]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Li, Xiao
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Key Lab Petr Resource Res, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100029, Peoples R China
5.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Wencheng,Li, Xiao,Wang, Yibo,et al. Novel method for detecting weak acoustic emission signals based on the similarity of time-frequency spectra[J]. GEOPHYSICS,2022,87(2):V143-V154.
APA Yang, Wencheng,Li, Xiao,Wang, Yibo,Zheng, Yue,&Guo, Peng.(2022).Novel method for detecting weak acoustic emission signals based on the similarity of time-frequency spectra.GEOPHYSICS,87(2),V143-V154.
MLA Yang, Wencheng,et al."Novel method for detecting weak acoustic emission signals based on the similarity of time-frequency spectra".GEOPHYSICS 87.2(2022):V143-V154.

入库方式： OAI收割

来源：地质与地球物理研究所

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