Broadband ultrasonic target strengths of hollow ceramic flotation spheres

Philip R. Atkins; D. T I Francis; Kenneth G. Foote

doi:10.1109/OCEANSE.2007.4302487

Broadband ultrasonic target strengths of hollow ceramic flotation spheres

Philip R. Atkins^*, D. T I Francis, Kenneth G. Foote

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Abstract

The target strengths of hollow ceramic flotation spheres manufactured by DeepSea Power and Light, Inc., and tested to a pressure equivalent of 12,000 m have been measured as a function of frequency over the bands 10-150 kHz. The spheres are made of alumina, purity 99.9%, with diameter 91.44 ± 0.2 mm, nominal thickness 1.3 mm, mass 140 ± 1 g. The target strength spectra have also been calculated theoretically assuming a mass density of 3.984 g/cm³, longitudinal- and transverse-wave sound speeds of 11000 and 6510 m/s, respectively. Measurements and computations are compared. Potential applications of the sphere as a standard acoustic target are noted.

Original language	English
Title of host publication	OCEANS 2007 - Europe
DOIs	https://doi.org/10.1109/OCEANSE.2007.4302487
Publication status	Published - 2007
Event	OCEANS 2007 - Europe - Aberdeen, Scotland, United Kingdom Duration: 18 Jun 2007 → 21 Jun 2007

Conference

Conference	OCEANS 2007 - Europe
Country/Territory	United Kingdom
City	Aberdeen, Scotland
Period	18/06/07 → 21/06/07

ASJC Scopus subject areas

Computer Science Applications
Oceanography
Ocean Engineering
Modelling and Simulation

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10.1109/OCEANSE.2007.4302487

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title = "Broadband ultrasonic target strengths of hollow ceramic flotation spheres",

abstract = "The target strengths of hollow ceramic flotation spheres manufactured by DeepSea Power and Light, Inc., and tested to a pressure equivalent of 12,000 m have been measured as a function of frequency over the bands 10-150 kHz. The spheres are made of alumina, purity 99.9%, with diameter 91.44 ± 0.2 mm, nominal thickness 1.3 mm, mass 140 ± 1 g. The target strength spectra have also been calculated theoretically assuming a mass density of 3.984 g/cm3, longitudinal- and transverse-wave sound speeds of 11000 and 6510 m/s, respectively. Measurements and computations are compared. Potential applications of the sphere as a standard acoustic target are noted.",

author = "Atkins, {Philip R.} and Francis, {D. T I} and Foote, {Kenneth G.}",

year = "2007",

doi = "10.1109/OCEANSE.2007.4302487",

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note = "OCEANS 2007 - Europe ; Conference date: 18-06-2007 Through 21-06-2007",

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T1 - Broadband ultrasonic target strengths of hollow ceramic flotation spheres

AU - Atkins, Philip R.

AU - Francis, D. T I

AU - Foote, Kenneth G.

PY - 2007

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N2 - The target strengths of hollow ceramic flotation spheres manufactured by DeepSea Power and Light, Inc., and tested to a pressure equivalent of 12,000 m have been measured as a function of frequency over the bands 10-150 kHz. The spheres are made of alumina, purity 99.9%, with diameter 91.44 ± 0.2 mm, nominal thickness 1.3 mm, mass 140 ± 1 g. The target strength spectra have also been calculated theoretically assuming a mass density of 3.984 g/cm3, longitudinal- and transverse-wave sound speeds of 11000 and 6510 m/s, respectively. Measurements and computations are compared. Potential applications of the sphere as a standard acoustic target are noted.

AB - The target strengths of hollow ceramic flotation spheres manufactured by DeepSea Power and Light, Inc., and tested to a pressure equivalent of 12,000 m have been measured as a function of frequency over the bands 10-150 kHz. The spheres are made of alumina, purity 99.9%, with diameter 91.44 ± 0.2 mm, nominal thickness 1.3 mm, mass 140 ± 1 g. The target strength spectra have also been calculated theoretically assuming a mass density of 3.984 g/cm3, longitudinal- and transverse-wave sound speeds of 11000 and 6510 m/s, respectively. Measurements and computations are compared. Potential applications of the sphere as a standard acoustic target are noted.

UR - http://www.scopus.com/inward/record.url?scp=36348936643&partnerID=8YFLogxK

U2 - 10.1109/OCEANSE.2007.4302487

DO - 10.1109/OCEANSE.2007.4302487

M3 - Conference contribution

AN - SCOPUS:36348936643

SN - 1424406358

SN - 9781424406357

BT - OCEANS 2007 - Europe

T2 - OCEANS 2007 - Europe

Y2 - 18 June 2007 through 21 June 2007

ER -

Broadband ultrasonic target strengths of hollow ceramic flotation spheres

Abstract

Conference

ASJC Scopus subject areas

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