File:Acoustic impedance of materials from reverberation time (IA acousticimpedanc00caro).pdf

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Acoustic impedance of materials from reverberation time   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
Carocho, Antonio J.
image of artwork listed in title parameter on this page
Title
Acoustic impedance of materials from reverberation time
Publisher
Monterey, California: Naval Postgraduate School;Springfield, Va.: Available from National Technical Information Service
Description
Thesis advisor(s) Coppens, Alan B. ; Sanders, James V
"December 1991."
Thesis (M.S. in Engineering Acoustics) Naval Postgraduate School, December 1991
Includes bibliographical referenes
The design of coating materials that reduce the reflection of water borne sound is an important problem in underwater acoustics. Since it is difficult to theoretically predict the complex reflection coefficient of such a material, the reflection properties must be determined experimentally. At high frequencies it is possible to measure the reflection coefficient of a slab of material by measuring the pressure after reflection of a narrow beam of sound incident at a given angle. However, this method becomes more difficult to use as the frequency of the sound is lowered. Determining the acoustic impedance of a material by measuring the standing wave pattern in an impedance tube , while the standard procedure in air borne sound, is very difficult for water born sound, because of the impossibility of approaching rigid conditions for the tube walls. Therefore it is attractive to investigate the possibility of determining the acoustic impedance of a material from measurements of the reverberation time in a water filled cavity with walls lined with the material
Mode of access: World Wide Web
System requirements: Adobe Acrobat Reader
Portuguese Navy author

Subjects:
Language en_US
Publication date December 1991
publication_date QS:P577,+1991-12-00T00:00:00Z/10
Current location
IA Collections: navalpostgraduateschoollibrary; fedlink; americana
Accession number
acousticimpedanc00caro
Notes No copyright page found.
Authority file  OCLC: 1038762153
Source
Internet Archive identifier: acousticimpedanc00caro
https://archive.org/download/acousticimpedanc00caro/acousticimpedanc00caro.pdf

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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current06:53, 8 July 2020Thumbnail for version as of 06:53, 8 July 20201,197 × 1,606, 38 pages (2.5 MB)Fæ (talk | contribs)FEDLINK - United States Federal Collection acousticimpedanc00caro (User talk:Fæ/IA books#Fork8) (batch 1990-1992 #2822)

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