A Time-Frequency Independent Component Analysis Method for Group Velocity Extraction of Ultrasonic Guided Waves

被引：0
|
作者：
Lou, Sijia [1 ]
Xu, Kailiang [1 ,2 ]
Jiang, Xue [1 ,2 ]
Hu, Bo [1 ]
Le, Lawrence H. [3 ]
Ta, Dean [1 ,2 ]
机构：
[1] Fudan Univ, Dept Elect Engn, Shanghai 200433, Peoples R China
[2] Zhuhai Fudan Innovat Inst, Zhuhai 519000, Guangdong, Peoples R China
[3] Univ Alberta, Dept Radiol & Diagnost Imaging, Edmonton, AB T6G2R3, Canada
来源：
2019 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2019年
基金：
上海市自然科学基金;
关键词：
Multimodal separation; Time-frequency energy ridge; Group velocity extraction; Waveguide evaluation;
D O I：
10.1109/ultsym.2019.8925970
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Ultrasonic guided waves play an important role in non-destructive evaluation (NDE). Nevertheless, the multi-mode dispersion still brings challenges for mode identification and the waveguide evaluation. In this study, we propose a multimodal separation method combining short-time Fourier transform (STFT) with independent component analysis (ICA). The simulation result shows that this method can realize an automatic mode identification and group velocity extraction, which can be helpful in the waveguide assessment.
引用
收藏
页码：1882 / 1885
页数：4
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