Abstract
Compared with traditional diagnostic technologies such as vibration sensors and visual cameras, acoustic sensors have the advantages of remote and global sensing, rapid deployment, good real-time performance, and low cost. However, acoustic signals are easily disturbed by ambient noise and decay rapidly, which makes it difficult to analyze faults in practical applications, especially when the fault signal as a low signal-to-noise ratio. By designing a metamaterial structure with a high refractive index medium and reasonable geometric parameters, the wavelength of sound wave can be compressed to improve the sound pressure. Employing fan blade faults as an object, Hilbert envelope spectrum analysis was used to demodulate fault characteristic information. Experimental results show that the acoustic metamaterial structure can enhance the signal significantly, providing high signal-to-noise ratio envelope spectrum for diagnosing fan blade faults. The study has demonstrated this acoustic metamaterial structure is an effective way to improve the applicability of acoustic measurement for condition monitoring.
Original language | English |
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Title of host publication | Proceedings of TEPEN 2022 |
Subtitle of host publication | Efficiency and Performance Engineering Network |
Editors | Hao Zhang, Yongjian Ji, Tongtong Liu, Xiuquan Sun, Andrew David Ball |
Publisher | Springer, Cham |
Pages | 865-876 |
Number of pages | 12 |
Volume | 129 |
ISBN (Electronic) | 9783031261930 |
ISBN (Print) | 9783031261923, 9783031261954 |
DOIs | |
Publication status | Published - 4 Mar 2023 |
Event | International Conference of The Efficiency and Performance Engineering Network 2022 - Baotou, China Duration: 18 Aug 2022 → 21 Aug 2022 https://tepen.net/ https://tepen.net/conference/tepen2022/ |
Publication series
Name | Mechanisms and Machine Science |
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Publisher | Springer |
Volume | 129 MMS |
ISSN (Print) | 2211-0984 |
ISSN (Electronic) | 2211-0992 |
Conference
Conference | International Conference of The Efficiency and Performance Engineering Network 2022 |
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Abbreviated title | TEPEN 2022 |
Country/Territory | China |
City | Baotou |
Period | 18/08/22 → 21/08/22 |
Internet address |