Comparison between Resonance and Non-Resonance Type Piezoelectric Acoustic Absorbers
- Title
- Comparison between Resonance and Non-Resonance Type Piezoelectric Acoustic Absorbers
- Author
- 박관규
- Keywords
- resonance model; non-resonance model; piezoelectric material
- Issue Date
- 2020-01
- Publisher
- MDPI
- Citation
- SENSORS, v. 20, no. 1, article no. 47
- Abstract
- In this study, piezoelectric acoustic absorbers employing two receivers and one transmitter with a feedback controller were evaluated. Based on the target and resonance frequencies of the system, resonance and non-resonance models were designed and fabricated. With a lateral size less than half the wavelength, the model had stacked structures of lossy acoustic windows, polyvinylidene difluoride, and lead zirconate titanate-5A. The structures of both models were identical, except that the resonance model had steel backing material to adjust the center frequency. Both models were analyzed in the frequency and time domains, and the effectiveness of the absorbers was compared at the target and off-target frequencies. Both models were fabricated and acoustically and electrically characterized. Their reflection reduction ratios were evaluated in the quasi-continuous-wave and time-transient modes
- URI
- https://www.mdpi.com/1424-8220/20/1/47https://repository.hanyang.ac.kr/handle/20.500.11754/156936
- ISSN
- 1424-8220
- DOI
- 10.3390/s20010047
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
- Files in This Item:
- Comparison between Resonance and Non-Resonance Type Piezoelectric Acoustic Absorbers.pdfDownload
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