WorldCat Identities

Barnard, G. R.

Overview
Works: 3 works in 3 publications in 1 language and 3 library holdings
Publication Timeline
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Most widely held works by G. R Barnard
A Summary on Reflection and Scattering of Acoustic Waves from Model Surfaces( Book )

1 edition published in 1967 in English and held by 1 WorldCat member library worldwide

These studies have included both analytical and experimental investigations, with the experimental work being done in a laboratory tank which has provisions for precise control of the parameters of the experiment. Full-scale experiments at sea are expensive and time consuming, and particular aspects of reflection theory are often obscurred by sea or bottom conditions that cannot be controlled. The small-scale experiments in the acoustic tank with model surfaces provide information rapidly and accurately to compare with mathematical models. These mathematical models can then be used to predict the reflection and scattering of sound by the ocean boundaries for full-scale conditions
Scattering of acoustic energy by solid and air-filled cylinders in water by Garland Ray Barnard( Book )

1 edition published in 1961 in English and held by 1 WorldCat member library worldwide

Acoustic Reflection and Transmission Properties of Several Transducer Window Materials( )

1 edition published in 1978 in English and held by 0 WorldCat member libraries worldwide

The transmission, reflection, and absorption characteristics of a material largely determine its usefulness in underwater sound applications. Uses may include transducer windows, sonar domes, sound reflectors, and linings for test tanks. Most of the experimental data available in the literature are for normal incidence of a plane wave on the material. However, in some applications it is desirable to know the acoustic properties of a material for angles of incidence other than normal. For these reasons a test system was devised to experimentally determine the acoustic properties of materials over a wide range of incident angles. Theoretically, the most straightforward approach to the case of arbitrary incidence is found in Brekhovskikh. The expressions for transmission and reflection coefficients will be used to compare theory and experiment. Hence it is the purpose of this paper to experimentally determine these coefficients for Absonic-A, Plexiglas, Soab, Polyethylene, and Fiberglass for frequencies ranging from 100-500 kc, compare the results with theory, and then examine their usefulness in underwater sound applications based upon these results
 
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Audience level: 0.95 (from 0.90 for Scattering ... to 0.99 for A Summary ...)

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