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On the use of poroelastic materials for the control of the sound radiated by a cavity backed plate
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10.1121/1.2214134
/content/asa/journal/jasa/120/4/10.1121/1.2214134
http://aip.metastore.ingenta.com/content/asa/journal/jasa/120/4/10.1121/1.2214134

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Scheme of the system: plate backed by an air cavity.

Image of FIG. 2.
FIG. 2.

(Color online) Radiated power when the porous layer is bonded onto the wall . No treatment (—), with treatment (- - -).

Image of FIG. 3.
FIG. 3.

(Color online) Influence of the treatment position on the radiated power when only one wall is treated.

Image of FIG. 4.
FIG. 4.

(Color online) Influence of the treatment position on the radiated power when two walls are treated simultaneously.

Image of FIG. 5.
FIG. 5.

(Color online) Noise reduction differential due to a partial treatment of the cavity wall compared to when the entire wall surface is treated. Covering rate is 83% (top) or 54% (bottom). Configuration, center (—), corner (- - -), random (-∙-).

Image of FIG. 6.
FIG. 6.

(Color online) Comparison between the unbonded (UB) and bonded (B) conditions when the treatment is applied on the plate. Radiated power for three configurations: No treatment (—), bonded (- - -), unbonded, (⋯).

Image of FIG. 7.
FIG. 7.

(Color online) Radiated power using different modeling approaches when the porous layer is unbonded to the plate.

Image of FIG. 8.
FIG. 8.

(Color online) Dissipated powers in the system when the porous layer is bonded onto the cavity rigid wall .

Image of FIG. 9.
FIG. 9.

(Color online) Dissipated powers in the system when the porous layer is bonded onto the plate.

Image of FIG. 10.
FIG. 10.

(Color online) Dissipated powers in the system when the porous layer is unbonded to the plate.

Image of FIG. 11.
FIG. 11.

(Color online) Comparison of bonded (—) and unbonded (- - -) configurations on the averaged quadratic velocities of the plate (thick lines) and of the porous material (thin lines).

Tables

Generic image for table
TABLE I.

Properties or the system components.

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/content/asa/journal/jasa/120/4/10.1121/1.2214134
2006-10-01
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: On the use of poroelastic materials for the control of the sound radiated by a cavity backed plate
http://aip.metastore.ingenta.com/content/asa/journal/jasa/120/4/10.1121/1.2214134
10.1121/1.2214134
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