About: Noise shielding using active acoustic metamaterials with electronically tunable acoustic impedance

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About: Noise shielding using active acoustic metamaterials with electronically tunable acoustic impedance Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.acoustics.asn.au/conference_proceedings/INTERNOISE2014/papers/p834.pdf
Description	Noise pollution has become one of the most serious problems of our society. Considerable part of unpleasant noise is transmitted into the interior of buildings through large vibrating planar structures - windows with poor noise-isolation properties caused by their low flexural rigidity. In this Paper, we demonstrate and analyze a noise shielding using an active acoustic metamaterial (AAMM) with electronically tunable acoustic impedance. The AAMM consists of a curved glass plate with attached piezoelectric Macro-Fiber Composite (MFC) actuators shunted by negative capacitor (NC) circuits. Using this approach, it is possible to electronically control the effective elasticity of the MFC actuators and, therefore, the flexural rigidity of the composite structure of the AAMM. Key features that control the acoustic impedance of the AAMM have been analyzed on a simplified analytical model. Frequency dependence of the acoustic impedance and the acoustic transmission loss through the AAMM are measured and compared. Vibration modes of the AAMM are optically measured using Digital Holographic Interferometry (DHI). Noise pollution has become one of the most serious problems of our society. Considerable part of unpleasant noise is transmitted into the interior of buildings through large vibrating planar structures - windows with poor noise-isolation properties caused by their low flexural rigidity. In this Paper, we demonstrate and analyze a noise shielding using an active acoustic metamaterial (AAMM) with electronically tunable acoustic impedance. The AAMM consists of a curved glass plate with attached piezoelectric Macro-Fiber Composite (MFC) actuators shunted by negative capacitor (NC) circuits. Using this approach, it is possible to electronically control the effective elasticity of the MFC actuators and, therefore, the flexural rigidity of the composite structure of the AAMM. Key features that control the acoustic impedance of the AAMM have been analyzed on a simplified analytical model. Frequency dependence of the acoustic impedance and the acoustic transmission loss through the AAMM are measured and compared. Vibration modes of the AAMM are optically measured using Digital Holographic Interferometry (DHI). (en)
Title	Noise shielding using active acoustic metamaterials with electronically tunable acoustic impedance Noise shielding using active acoustic metamaterials with electronically tunable acoustic impedance (en)
skos:prefLabel	Noise shielding using active acoustic metamaterials with electronically tunable acoustic impedance Noise shielding using active acoustic metamaterials with electronically tunable acoustic impedance (en)
skos:notation	RIV/46747885:24220/14:#0003036!RIV15-GA0-24220___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA13-10365S)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Kodejška, Miloš Černík, Martin Mokrý, Pavel Marton, Pavel Václavík, Jiří
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Technická univerzita v Liberci / Fakulta mechatroniky, informatiky a mezioborových studií
http://linked.open...dnocenehoVysledku	32697
http://linked.open...ai/riv/idVysledku	RIV/46747885:24220/14:#0003036
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	active acoustic metamaterial; noise shielding; acoustic impedance; electronic control (en)
http://linked.open.../riv/klicoveSlovo	acoustic impedance electronic control active acoustic metamaterial noise shielding
http://linked.open...ontrolniKodProRIV	[DCE9861A6967]
http://linked.open...v/mistoKonaniAkce	Melbourne, Australia
http://linked.open...i/riv/mistoVydani	Melbourne, Australia
http://linked.open...i/riv/nazevZdroje	43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Planar acoustic metamaterials with the active control of acoustic impedance
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Doleček, Roman Kodejška, Miloš Mokrý, Pavel Psota, Pavel Václavík, Jan Černík, Martin Steiger, Kateřina Márton, Pavel
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2014-01-01 (xsd:date)
number of pages	9 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Australian Acoustical Society
https://schema.org/isbn	9780909882037
http://localhost/t...ganizacniJednotka	24220

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