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Open AccessArticle

A Conformal Driving Class IV Flextensional Transducer

by Tianfang Zhou 1,2,3, Yu Lan 1,2,3,*, Qicheng Zhang 1, Jingwen Yuan 1, Shichang Li 1 and Wei Lu 1,2,3,*
1
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
2
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China
3
Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Ministry of Industry and Information Technology, Harbin 150001, China
*
Authors to whom correspondence should be addressed.
Sensors 2018, 18(7), 2102; https://doi.org/10.3390/s18072102
Received: 29 May 2018 / Revised: 24 June 2018 / Accepted: 24 June 2018 / Published: 30 June 2018
(This article belongs to the Special Issue Underwater Sensing, Communication, Networking and Systems)
Class IV Flextensional Transducers (FTs) are the most popular among various FTs used as low-frequency and high power underwater acoustic sources. However, an undeniable fact exists in Class IV FTs is that the resonance frequency of breathing mode regulator used is fairly raised by its longitudinal driver stacks. In this research, a conformal driving Class IV FT in which the driver stacks are kept conformal with its oval shell was proposed aiming at the limitations of conventional driving Class IV FTs described above. The device exhibits competitive Transmitting Voltage Responses (TVRs) but much lower operation frequencies with respect to conventional driving Class IV FTs, through the designs of conformal and segmentally controlled driver stacks. Geometric parameters analysis was carried out extensively by Finite Element (FE) simulations for the design optimizations and then a conformal driving Class IV FT resonating at 510 Hz (45% approximately lower than that of conventional driving Class IV FT with the same shell geometry) was finalized. Subsequently the conformal driving Class IV was fabricated and tested in the anechoic tank experimentally. Good agreements of both FE predictions and experimental results demonstrate its low-frequency and small-size acoustic performance. View Full-Text
Keywords: conformal driving class IV flextensional transducer; low frequency; high power; small size conformal driving class IV flextensional transducer; low frequency; high power; small size
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MDPI and ACS Style

Zhou, T.; Lan, Y.; Zhang, Q.; Yuan, J.; Li, S.; Lu, W. A Conformal Driving Class IV Flextensional Transducer. Sensors 2018, 18, 2102.

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