Characteristics of piezoceramic and 3-3 piezocomposite hydrophones evaluated by finite element modelling

R Ramesh, H Kara, C R Bowen

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The transducer characteristics of hydrophones manufactured from porous 3-3 piezocomposites are compared with dense piezoceramic disc hydrophones using finite element modelling. Due to the complex porous structure of the 3-3 piezocomposites, a real-size 3-dimensional model was developed while a 2-dimensional axisymmetric model was constructed for the simple dense disc hydrophone. The electrical impedance and receiving sensitivity of the hydrophones in water were evaluated in the frequency range 10-100 kHz. The model results were compared with the experimental results. The sharp resonance peaks observed for the dense piezoceramic hydrophone were broadened to a large extent for porous piezocomposite hydrophones due to weaker coupling of the structure. The receiving sensitivity of piezocomposite hydrophones is found to be constant over the frequency range studied. The flat frequency response suggests that the 3-3 piezocomposites are useful for wide-band hydrophone applications. (C) 2004 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)397-403
Number of pages7
JournalComputational Materials Science
Volume30
Issue number3-4
DOIs
Publication statusPublished - 2004

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Piezoceramics
Hydrophones
hydrophones
Finite Element Modeling
Weak Coupling
Frequency Response
Transducer
Range of data
Impedance
Model
Water
frequency ranges
Experimental Results
Acoustic impedance
sensitivity
electrical impedance
frequency response
Frequency response
Transducers
transducers

Cite this

Characteristics of piezoceramic and 3-3 piezocomposite hydrophones evaluated by finite element modelling. / Ramesh, R; Kara, H; Bowen, C R.

In: Computational Materials Science, Vol. 30, No. 3-4, 2004, p. 397-403.

Research output: Contribution to journalArticle

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