@article {Hu:2009:0736-2501:193,
title = "A plane wave study for improving acoustical performance of double wall systems using an active-passive method",
journal = "Noise Control Engineering Journal",
parent_itemid = "infobike://ince/ncej",
publishercode ="ince",
year = "2009",
volume = "57",
number = "3",
publication date ="2009-05-01T00:00:00",
pages = "193-202",
itemtype = "ARTICLE",
issn = "0736-2501",
url = "https://ince.publisher.ingentaconnect.com/content/ince/ncej/2009/00000057/00000003/art00004",
doi = "doi:10.3397/1.3115466",
keyword = "51.3, 35",
author = "Hu, Ying and Sitel, Azzedine and Galland, Marie-Annick and Chen, Kean",
abstract = "Finite multilayer structures are widely used in many engineering applications for increasing the sound absorption and for reducing the sound transmission. These so-called double wall system is made up of two elastic plates and a core such as an air gap or highly-dissipative
media like poroelastic materials. Such passive panels are efficient enough at medium and high frequencies but exhibit a lack of performance at low frequency, where resonance inherent to the layer distribution occurs. This paper presents a double wall system combined passive and active means.
Passive panels with absorbent materials located in the emission side are used to increase absorption for a wide frequency range. Piezoelectric patches are added to the active panel and behave as a secondary vibrational source, ensuring high performance at low and/or resonance frequencies.
The analytical and numerical simulations in Matlab are completed. At last, the result of experiment carried out in the Matisse set-up proposed by LMFA is in good agreement with the simulation.",
}