Improved Sound Transmission Loss In An Automotive Component Using Piezoceramic Patches And Dissipative Shunt Circuits

dc.creatorRocha T.L.
dc.creatorDias M.
dc.date2015
dc.date2015-06-25T12:54:19Z
dc.date2015-11-26T15:16:05Z
dc.date2015-06-25T12:54:19Z
dc.date2015-11-26T15:16:05Z
dc.date.accessioned2018-03-28T22:25:56Z
dc.date.available2018-03-28T22:25:56Z
dc.identifier
dc.identifierJournal Of Intelligent Material Systems And Structures. Sage Publications Ltd, v. 26, n. 4, p. 476 - 486, 2015.
dc.identifier1045389X
dc.identifier10.1177/1045389X14529610
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84922575321&partnerID=40&md5=642c1ece53675967f6ae4e622eddbf4d
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/85579
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/85579
dc.identifier2-s2.0-84922575321
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1259175
dc.descriptionNoise in a vehicle is generally caused by the vibration of various automotive components, such as the dashboard, door panels, and roof. For example, vibrations caused by the engine may cause a dash panel to vibrate leading to noise in the vehicle cabin. The control of such noise and vibration may be achieved by placing a viscoelastic or other suitable damping material on the automotive component; however, conventional damping materials usually have a high density, which can lead to significant increases in the overall mass of the sound insulation system. A lightweight alternative employs piezoceramic patches connected to a resistor-inductor circuit, where the mechanical vibration, converted into electrical energy by the piezoceramic, is dissipated in the form of thermal heat through the resistor. The presence of an inductive element allows the system to perform in the vicinity of a mode of the vibrating structure, in an effect similar to a resonant vibration absorber. In this work, the damping capacity of this resonant electrical circuit is demonstrated in a dash panel installed between coupled reverberant and anechoic rooms for assessments of sound transmission loss. Finite element simulation and theoretical analysis are used to support the choice of the electrical component values and the correct placement for piezoelectric patches. The resulting sound transmission control is compared to baseline measurements with conventional viscoelastic material thermally bonded to the panel surface. The work is concluded with a discussion on the achieved results and mass saving benefits of the proposed damping technique.
dc.description26
dc.description4
dc.description476
dc.description486
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dc.languageen
dc.publisherSAGE Publications Ltd
dc.relationJournal of Intelligent Material Systems and Structures
dc.rightsfechado
dc.sourceScopus
dc.titleImproved Sound Transmission Loss In An Automotive Component Using Piezoceramic Patches And Dissipative Shunt Circuits
dc.typeArtículos de revistas


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