Acoustics – Sound-modifying means – Sound absorbing panels
Patent
1995-06-16
1999-08-31
Dang, Khanh
Acoustics
Sound-modifying means
Sound absorbing panels
181208, E04B 182
Patent
active
059456434
ABSTRACT:
A laminated damping material comprising a layer of high density and high modulus material as a core layer and two layers of higher modulus material being adhered to the core material, the core being sandwiched between the higher modulus layers. The damping material can be further augmented by adhering an additional layer of material exterior to the higher modulus materials if necessary and as needed for the specific application, be it cosmetic, environmental (if resistance to chemical is needed, for example), etc. The damping material can be used for preparing a reinforced composite material which comprises at least one basic multi-layer structure comprising higher modulus material/high modulus panel structure with the layers being bonded with adhesive compatible with both core and outer layer materials and the application where the panel section is used, such as chemical resistance, high heat resistance, etc. If an additional exterior layer is used, the bonding agent must be suitable for that material as well. The resultant structure exhibits extremely high rigidity and vibration damping properties, and may be used as a free standing isolation platform such as a table top, platform or base, for electrical devices, instruments, or any device, object or matter that is affected by external vibration. The materials may alternatively or additionally be used as structural members such as chassis within such devices, instruments, objects or matter, or may be alternatively or additionally utilized as substructures within such instruments, devices, objects or matter. The material may also be used in or in association with acoustical instruments or any other device that is subject to external vibration.
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