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      Spiral Sound Wave Transducer Based on the Longitudinal Vibration

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          Abstract

          A spiral sound wave transducer comprised of longitudinal vibrating elements has been proposed. This transducer was made from eight uniform radial distributed longitudinal vibrating elements, which could effectively generate low frequency underwater acoustic spiral waves. We discuss the production theory of spiral sound waves, which could be synthesized by two orthogonal acoustic dipoles with a phase difference of 90 degrees. The excitation voltage distribution of the transducer for emitting a spiral sound wave and the measurement method for the transducer is given. Three-dimensional finite element modeling (FEM)of the transducer was established for simulating the vibration modes and the acoustic characteristics of the transducers. Further, we fabricated a spiral sound wave transducer based on our design and simulations. It was found that the resonance frequency of the transducer was 10.8 kHz and that the transmitting voltage resonance was 140.5 dB. The underwater sound field measurements demonstrate that our designed transducer based on the longitudinal elements could successfully generate spiral sound waves.

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          Most cited references22

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          The design of low frequency underwater acoustic projectors: present status and future trends

          O.B. Wilson, J.-N. Decarpigny, B. Hamonic (1991)
          Article 0 comments Cited 7 times – based on 0 reviews     Review now
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            Cylindrical transducer for producing an acoustic spiral wave for underwater navigation (L).

            David A. Brown, Boris Aronov, Corey Bachand (2012)
            A cylindrical piezoceramic transducer using two orthogonal dipoles driven in phase quadrature to create an acoustic spiral wave, having constant amplitude and phase that varies linearly with azimuthal angle, is considered as a source for an underwater acoustic navigation system. Comparison of the spiral-wave signal with an omnidirectional reference signal having a constant phase originating from the same or co-located source provides a means for an underwater vehicle to determine its bearing angle relative to the signaling beacon [B. Hefner and B. Dzikowicz, J. Acoust. Soc. Am. 129(6), 3630-3639 (2011)]. An alternative proof-of-principle transducer along with experimental results including transmit frequency response, directional factors, and computed versus measured bearing angle are presented.
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              A spiral wave front beacon for underwater navigation: basic concept and modeling.

              Brian T. Hefner, Benjamin R. Dzikowicz (2011)
              A spiral wave front source produces an acoustic field that has a phase that is proportional to the azimuthal angle about the source. The concept of a spiral wave front beacon is developed by combining this source with a reference source that has a phase that is constant with the angle. The phase difference between these sources contains information about the receiver's azimuthal angle relative to the beacon and can be used for underwater navigation. To produce the spiral wave front, two sources are considered: a "physical-spiral" source, which produces the appropriate phase by physically deforming the active element of the source into a spiral, and a "phased-spiral" source, which uses an array of active elements, each driven with the appropriate phase, to produce the spiral wave front. Using finite element techniques, the fields produced by these sources are examined in the context of the spiral wave front beacon, and the advantages of each source are discussed.
              Article 0 comments Cited 4 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Sensors (Basel)
                Journal ID (iso-abbrev): Sensors (Basel)
                Journal ID (publisher-id): sensors
                Title: Sensors (Basel, Switzerland)
                Publisher: MDPI
                ISSN (Electronic): 1424-8220
                Publication date (Electronic): 29 October 2018
                Publication date Collection: November 2018
                Volume: 18
                Issue: 11
                Electronic Location Identifier: 3674
                Affiliations
                [1 ]Acoustic Science and Technology Laboratory, Harbin Engineering University of China, Harbin 150001, China; luwei@ 123456hrbeu.edu.cn (W.L.); guorongzhen@ 123456hrbeu.edu.cn (R.G.); Q.Zhang5@ 123456salford.ac.uk (Q.Z.); lsc1993@ 123456hrbeu.edu.cn (S.L.)
                [2 ]Key Laboratory of Marine Information Acquisition and Security (Harbin Engineering University), Ministry of Industry and Information Technology, Harbin 150001, China
                [3 ]College of Underwater Acoustic Engineering, Harbin Engineering University of China, Harbin 150001, China
                Author notes
                [* ]Correspondence: lanyu@ 123456hrbeu.edu.cn (Y.L.); zhoutianfang@ 123456hrbeu.edu.cn (T.Z.); Tel.: +86-363-3665-166 (Y.L.); +86-379-6677-795 (T.Z.)
                Article
                Publisher ID: sensors-18-03674
                DOI: 10.3390/s18113674
                PMC ID: 6263438
                PubMed ID: 30380646
                SO-VID: 1be1875e-4cf6-4600-b350-6c0487d1a5c7
                Copyright © © 2018 by the authors.
                License:

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                Date received : 22 September 2018
                Date accepted : 25 October 2018
                Categories
                Subject: Article

                ScienceOpen disciplines: Biomedical engineering
                Keywords: spiral sound wave transducer,longitudinal vibration,orthometric dipole,finite element
                Data availability:
                ScienceOpen disciplines: Biomedical engineering
                Keywords: spiral sound wave transducer, longitudinal vibration, orthometric dipole, finite element

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