Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/19949
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Campo DC | Valor | Idioma |
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dc.contributor.author | Martins, Marcos Silva | - |
dc.contributor.author | Correia, Vítor | - |
dc.contributor.author | Cabral, José | - |
dc.contributor.author | Lanceros-Méndez, S. | - |
dc.contributor.author | Rocha, J. G. | - |
dc.date.accessioned | 2012-07-18T15:11:11Z | - |
dc.date.available | 2012-07-18T15:11:11Z | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 0924-4247 | - |
dc.identifier.uri | https://hdl.handle.net/1822/19949 | - |
dc.description.abstract | Ultrasound transducers are typically based on piezoelectric materials, due to their good response at high frequencies. Depending on the application, ceramics, polymers and composite materials can be used. In this work, an optimization study of ultrasound transducers for underwater communications is addressed, focusing on a piston type emitter transducer operating in thickness mode (d33). The piston is constituted by an active element disk with optimized dimensions. It is discussed how the acoustic impedance, thickness, resonance frequency and structure affect the transducer performance. This work allows a better understanding of the emitter transducer characteristics allowing reaching the optimum point of operation for specific applications. Focusing on underwater communication, the acoustic channel is defined and the transducer is optimized by finite element computer simulations. The results were compared with experimental tests, which show that four-layer structures increase up to 16 dB in performance versus single-layer. | por |
dc.description.sponsorship | The authors thank the FCT for financial support under grant PTDC/CTM/69316/2006. M. S. Martins thanks the FCT for the grant SFRH/BD/60713/2009. V. Correia thanks the FCT for the grant SFRH/BD/48708/2008. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/69316/PT | - |
dc.rights | openAccess | por |
dc.subject | Underwater acoustic channel | por |
dc.subject | Underwater wireless communication | por |
dc.subject | Transducer optimization | por |
dc.subject | Piezoelectric ultrasound emitter transducers | por |
dc.subject | Piezoelectric ultrasound emitter | por |
dc.subject | transducers | por |
dc.title | Optimization of piezoelectric ultrasound emitter transducers for underwater communications | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | http://www.sciencedirect.com/ | por |
dc.comments | Prova tipográfica. | - |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 141 | por |
oaire.citationEndPage | 148 | por |
oaire.citationTitle | Sensors and Actuators A : Physical | por |
oaire.citationVolume | 184 | por |
dc.identifier.doi | 10.1016/j.sna.2012.06.008 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Sensors and Actuators A: Physical | por |
Aparece nas coleções: | CAlg - Artigos em revistas internacionais / Papers in international journals CDF - FCD - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Optimization of piezoelectric ultrasound emitter transducers for underwater.pdf | Documento principa | 889,06 kB | Adobe PDF | Ver/Abrir |