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Acoustic characterization of panel materials under simulated ocean conditions using a parametric array source

Humphrey, Victor F., Robinson, Stephen P., Smith, John D., Martin, Michael J., Beamiss, Graham A., Hayman, Gary and Carroll, Nicholas L. (2008) Acoustic characterization of panel materials under simulated ocean conditions using a parametric array source Journal of the Acoustical Society of America, 124, (2), pp. 803-814. (doi:10.1121/1.2945119).

Record type: Article

Abstract

A technique for evaluating the underwater acoustic performance of panels under simulated ocean conditions in a laboratory test facility is described. The method uses a parametric array as a source of sound within a test vessel capable of simulating ocean depths down to 700 m and water temperatures from 2 to 35 °C. The reflection loss and transmission loss of the test panel may be determined at frequencies from a few kilohertz to 50 kHz. The use of the parametric array enables wideband measurements to be undertaken with short-duration pulses and reduces the effects of diffraction from the panel edges. An acoustic filter is used to truncate the array in order to provide a source-free measurement region and to simplify the measurement process. The difficulties of establishing a parametric array in the confined space of the vessel are outlined, and the experimental procedures adopted are described. The techniques were validated by undertaking measurements on two test objects that have predictable behavior. The potential of the technique is also illustrated with experimental results for test panels for hydrostatic pressures up to 2.8 MPa. An extensive discussion of the measurement limitations is included.

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More information

Published date: August 2008
Organisations: Fluid Dynamics & Acoustics Group

Identifiers

Local EPrints ID: 63643
URI: http://eprints.soton.ac.uk/id/eprint/63643
ISSN: 0001-4966
PURE UUID: ce2b1f4e-e1ed-44a1-b5d4-40f345eeb51b
ORCID for Victor F. Humphrey: ORCID iD orcid.org/0000-0002-3580-5373

Catalogue record

Date deposited: 22 Oct 2008
Last modified: 17 Jul 2017 14:16

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Contributors

Author: Stephen P. Robinson
Author: John D. Smith
Author: Michael J. Martin
Author: Graham A. Beamiss
Author: Gary Hayman
Author: Nicholas L. Carroll

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