Similarity assessment of acoustic emission signals and its application in source localization
文献类型：期刊论文
| 作者 | Chen, Shiwan1; Yang, Chunhe2; Wang, Guibin2; Liu, Wei1 |
| 刊名 | ULTRASONICS
 |
| 出版日期 | 2017 |
| 卷号 | 75页码:36-45 |
| 关键词 | Dynamic time warping Thermal-cracking in granite Wavelet coherence Source re-localization |
| ISSN号 | 0041-624X |
| DOI | 10.1016/j.ultras.2016.11.005 |
| 英文摘要 | In conventional AE source localization acoustic emission (AE) signals are applied directly to localize the source without any waveform identification or quality evaluation, which always leads to large errors in source localization. To improve the reliability and accuracy of acoustic emission source localization, an identification procedure is developed to assess the similarity of AE signals to select signals with high quality to localize the AE source. Magnitude square coherence (MSC), wavelet coherence and dynamic timing warping (DTW) are successively applied for similarity assessment. Results show that cluster analysis based on DTW distance is effective to select AE signals with high similarity. Similarity assessment results of the proposed method are almost completely Consistent with manual identification. A novel AE source localization procedure is developed combining the selected AE signals with high quality and a direct source localization algorithm. AE data from thermal-cracking tests in Beishan granite are analyzed to demonstrate the effectiveness of the proposed AE localization procedure. AE events are re localized by the proposed AE localization procedure. And the accuracy of events localization has been improved significantly. The reliability and credibility of AE source localization will be improved by the proposed method. (C) 2016 Elsevier B.V. All rights reserved, |
| WOS研究方向 | Acoustics ; Radiology, Nuclear Medicine & Medical Imaging |
| 语种 | 英语 |
| WOS记录号 | WOS:000392771700005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4020]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control ; 2.Chinese Acad Sci, Inst Rock & Soil Mech |
| 推荐引用方式 GB/T 7714 | Chen, Shiwan,Yang, Chunhe,Wang, Guibin,et al. Similarity assessment of acoustic emission signals and its application in source localization[J]. ULTRASONICS,2017,75:36-45. |
| APA | Chen, Shiwan,Yang, Chunhe,Wang, Guibin,&Liu, Wei.(2017).Similarity assessment of acoustic emission signals and its application in source localization.ULTRASONICS,75,36-45. |
| MLA | Chen, Shiwan,et al."Similarity assessment of acoustic emission signals and its application in source localization".ULTRASONICS 75(2017):36-45. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。