Propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries

Propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries

Approved for public release, distribution is unlimited === The propagation of simple acoustic transients in an isovelocity water layer was investigated for the purpose of studying a relationship between the propagation of transients in ducts and in layers. The Laplace transform method was used to ob...

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Main Authors: Miller, Alan Charles, Wendt, George Frederick
Other Authors: Coppens, Alan B.
Language:en_US
Published: Monterey, California. U.S. Naval Postgraduate School 2012
Online Access:http://hdl.handle.net/10945/12906
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spelling ndltd-nps.edu-oai-calhoun.nps.edu-10945-129062015-05-06T03:58:29Z Propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries Miller, Alan Charles Wendt, George Frederick Coppens, Alan B. Department of Physics Approved for public release, distribution is unlimited The propagation of simple acoustic transients in an isovelocity water layer was investigated for the purpose of studying a relationship between the propagation of transients in ducts and in layers. The Laplace transform method was used to obtain approximate solutions for the acoustic pressure, particle velocity, and particle displacement resulting from a step-function input in velocity and the particle velocity resulting from a gated sine-wave input in velocity. Computer programs were written to evaluate and graph the resulting waveforms. The waveforms resulting from step-function and gated sine-wave inputs in velocity were observed and compared with the predicted waveforms. With the use of Mylar transducers, good correlation was obtained in the region of validity of the theoretical solutions. It was found that previously published solutions for the propagation of transients in ducts became the leading terms of the associated solutions for the layer 2012-08-29T23:34:48Z 2012-08-29T23:34:48Z 1967-06 Thesis http://hdl.handle.net/10945/12906 en_US This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, it may not be copyrighted. Monterey, California. U.S. Naval Postgraduate School
collection NDLTD
language en_US
sources NDLTD
description Approved for public release, distribution is unlimited === The propagation of simple acoustic transients in an isovelocity water layer was investigated for the purpose of studying a relationship between the propagation of transients in ducts and in layers. The Laplace transform method was used to obtain approximate solutions for the acoustic pressure, particle velocity, and particle displacement resulting from a step-function input in velocity and the particle velocity resulting from a gated sine-wave input in velocity. Computer programs were written to evaluate and graph the resulting waveforms. The waveforms resulting from step-function and gated sine-wave inputs in velocity were observed and compared with the predicted waveforms. With the use of Mylar transducers, good correlation was obtained in the region of validity of the theoretical solutions. It was found that previously published solutions for the propagation of transients in ducts became the leading terms of the associated solutions for the layer
author2 Coppens, Alan B.
author_facet Coppens, Alan B.
Miller, Alan Charles
Wendt, George Frederick
author Miller, Alan Charles
Wendt, George Frederick
spellingShingle Miller, Alan Charles
Wendt, George Frederick
Propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries
author_sort Miller, Alan Charles
title Propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries
title_short Propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries
title_full Propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries
title_fullStr Propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries
title_full_unstemmed Propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries
title_sort propagation of two simple acoustic transients in an isovelocity layer with perfectly-reflecting boundaries
publisher Monterey, California. U.S. Naval Postgraduate School
publishDate 2012
url http://hdl.handle.net/10945/12906
work_keys_str_mv AT milleralancharles propagationoftwosimpleacoustictransientsinanisovelocitylayerwithperfectlyreflectingboundaries
AT wendtgeorgefrederick propagationoftwosimpleacoustictransientsinanisovelocitylayerwithperfectlyreflectingboundaries
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