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Smart foam for applications in passive-active radiation control

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dc.contributorVirginia Tech. Department of Mechanical Engineering. Vibration and Acoustics Laboratoriesen
dc.contributor.authorGentry, C. A.en
dc.contributor.authorGuigou, Catherineen
dc.contributor.authorFuller, Chris R.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessed2015-05-12en
dc.date.accessioned2015-05-27T19:50:22Zen
dc.date.available2015-05-27T19:50:22Zen
dc.date.issued1997-04-01en
dc.description.abstractThe development of a smart foam for passive-active noise control is discussed. The smart foam consists of cylindrically curved sections of PVDF film embedded in partially reticulated polyurethane acoustic foam forming a very thin, compact arrangement. The device is designed to reduce sound by the simultaneous action of the passive absorption of the foam (effective at high frequencies) and the active input of the PVDF element driven by an oscillating electrical input (effective at low frequencies). The PVDF actuator is configured to behave in a linear sense and to couple in-plane strain associated with piezoelectric effect with out-of-plane motion needed to radiate sound from the foam surface. The performance of the passive-active device is studied for controlling sound radiation from a vibrating piston. A feedforward LMS controller is used to minimize the signal from a far-field error microphone, Results of harmonic and broadband control are presented. The potential of the smart foam for globally reducing sound radiation in the low- and high-frequency range is demonstrated. (C) 1997 Acoustical Society of America.en
dc.description.sponsorshipUnited States. Office of Naval Research - Grant No. ONR N00014-94-1-1140en
dc.description.sponsorshipUnited States. Army Research Office - Grant No. DAA H04-95-1-0037en
dc.description.sponsorshipLangley Research Centeren
dc.format.extent8 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGentry, C. A., Guigou, C., & Fuller, C. R. (1997). Smart foam for applications in passive-act radiation control. Journal of the Acoustical Society of America, 101(4), 1771-1778. doi: 10.1121/1.418234en
dc.identifier.doihttps://doi.org/10.1121/1.418234en
dc.identifier.issn0001-4966en
dc.identifier.urihttp://hdl.handle.net/10919/52677en
dc.identifier.urlhttp://scitation.aip.org/content/asa/journal/jasa/101/4/10.1121/1.418234en
dc.language.isoen_USen
dc.publisherAcoustical Society of Americaen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAcoustic noise controlen
dc.subjectFoamsen
dc.subjectAcousticsen
dc.subjectRadiation monitoringen
dc.subjectAcoustic absorptionen
dc.titleSmart foam for applications in passive-active radiation controlen
dc.title.serialJournal of the Acoustical Society of Americaen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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