Saint-gobain Weber France

Saint-gobain Glass France

Pierre Boyadjian

David Fournier

Michele Curt

Cedric Chaveyriat

Serge Rimlinger

Marc Rehfeld

A tile made of a tile body and, joined to a face thereof, a layer of damping material conferring vibratory energy dissipation properties on the tile.

Tile for a covering with enhanced acoustic properties

A method for selecting a viscoelastic plastic interlayer including two outer layers and a central layer. The interlayer is for incorporation between two glass sheets of a glazing unit. The method of selection includes providing first and second components respectively as the central layer and the outer layers, and measuring the shear modulus G' of the first and second components. The material of the second component is selected only if G&#x2032; is a certain value at a specific temperature and frequency range. The thickness h of the first component is set so that h is a specific value and so that g=G&#x2032;/h is within a specific range of values at a specific temperature and frequency range. The method optimizes the damping of the second and third natural frequencies of a vehicle windshield without weighing down the windshield.

Method for selecting an interlayer for vibroacoustic damping, interlayer for vibroacoustic damping and glazing unit comprising such an interlayer

An acoustic enhancement device adapted for being placed on a support and under a covering, and containing a first flexible layer adapted for being placed facing the support, a second rigid layer joined to the first flexible layer and adapted for being placed opposite the support, and a damping element, wherein the damping element is integrated in the second rigid layer or forms a third layer placed on the second rigid layer and opposite the first flexible layer.

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Chambery, France

Pierre Boyadjian