Described herein are noise-resistant assemblies pursuant to various commercial and industrial applications. The noise-resistant assemblies can include duct assemblies, pool assemblies, motor assemblies, carpet flooring assemblies, and roofing assemblies. These assemblies incorporate an acoustic article containing a porous layer and a heterogeneous filler having a median particle size of from 1 micrometer to 1000 micrometers and a specific surface area of from 0.1 m.sup.2/g to 10,000 m.sup.2/g received in the porous layer.

A baffle assembly for use in a transportation vehicle, comprising a carrier including an interior portion that includes a plurality of walls extending upward, a rim portion that extends to substantially surround the interior portion and a fastener that extends upward from the rim portion in the same direction as the plurality of walls. The baffle also includes a resinous sealant that includes a polymer that is adapted for thermal expansion upon activation by heat that is located on at least a portion of the interior portion wherein the rim portion is substantially free of any sealant.

A baffle assembly for use in a transportation vehicle, comprising a carrier including an interior portion that includes a plurality of walls extending upward, a rim portion that extends to substantially surround the interior portion and a fastener that extends upward from the rim portion in the same direction as the plurality of walls. The baffle also includes a resinous sealant that includes a polymer that is adapted for thermal expansion upon activation by heat that is located on at least a portion of the interior portion wherein the rim portion is substantially free of any sealant.

An exhaust system includes an exhaust component with a wall having an outer surface and an inner surface that defines an internal exhaust gas flow path. At least one opening is formed in the exhaust component to extend through the wall of the exhaust component from the outer surface to the inner surface. A member is formed from a resistive material and is configured to cover the at least one opening. A diverter is positioned adjacent the at least one opening to block at least a portion of the exhaust gas flow path.

The present invention addresses the problem of providing a sound insulating structure which provides a sufficient sound insulating effect even when an adhesive layer is arranged therein, and in which a shift in the frequency band where the sound insulating effect is generated is unlikely to occur. This sound insulating structure includes, at least: a sound insulating member that includes a sheet-like sheet section and plural projections arranged on the sheet section; and an adhesive layer arranged on a surface of the sheet section on the opposite side of the side provided with the projections, and the sound insulating structure satisfies the following Formula (1): E_glue/I_glue>0.5×(E_membrane/H)(1) (wherein, E_glue (MPa): storage modulus of adhesive layer, I_glue (mm): average thickness of adhesive layer, E_membrane (MPa): storage modulus of sheet section and projections, and H (mm): average height of sheet section and projections).

A membrane-type acoustic absorber structure is provided for an acoustic panel. The absorber structure includes an acoustic substrate. A plurality of spaced apart unit cells are provided in the acoustic substrate and arranged in a periodic array. Each unit cell includes at least one perimeter boundary wall and a bottom wall portion. The perimeter boundary wall and bottom wall portion cooperate to define a chamber with an opening and a chamber cavity having a chamber volume. An elastic membrane is disposed at the chamber opening and configured for sealing the chamber cavity. At least one lossy porous medium is provided aligned with, and separated a distance from, the elastic membrane. A fluid/gas is provided in the chamber volume. In certain aspects, the unit cells may have identical dimensions, having the same resonance frequency. In other aspects, the unit cells may have different dimensions, providing a broadband absorber.

A membrane-type acoustic absorber structure is provided for an acoustic panel. The absorber structure includes an acoustic substrate. A plurality of spaced apart unit cells are provided in the acoustic substrate and arranged in a periodic array. Each unit cell includes at least one perimeter boundary wall and a bottom wall portion. The perimeter boundary wall and bottom wall portion cooperate to define a chamber with an opening and a chamber cavity having a chamber volume. An elastic membrane is disposed at the chamber opening and configured for sealing the chamber cavity. At least one lossy porous medium is provided aligned with, and separated a distance from, the elastic membrane. A fluid/gas is provided in the chamber volume. In certain aspects, the unit cells may have identical dimensions, having the same resonance frequency. In other aspects, the unit cells may have different dimensions, providing a broadband absorber.

A sound absorbing panel for managing acoustic environments with desired durability, stiffness and advantageous characteristics for self-supporting sound-absorbing panels intended to be attached to indoor walls and ceilings of buildings. The sound absorbing panel comprising a height, a width, a length and a cover. The sound absorbing panel comprising materials characterized by an inner core comprising a core density, a core binder and a thickness. The core density is between two and a half and four and a half pounds per cubic-foot. The core binder is between one and three-fourths and two and three fourths percent. The thickness comprises a thickness between 35-45 mm. The cover comprises a cover weight. The cover weight is between one quarter and one half ounces per foot.

A sound absorbing panel for managing acoustic environments with desired durability, stiffness and advantageous characteristics for self-supporting sound-absorbing panels intended to be attached to indoor walls and ceilings of buildings. The sound absorbing panel comprising a height, a width, a length and a cover. The sound absorbing panel comprising materials characterized by an inner core comprising a core density, a core binder and a thickness. The core density is between two and a half and four and a half pounds per cubic-foot. The core binder is between one and three-fourths and two and three fourths percent. The thickness comprises a thickness between 35-45 mm. The cover comprises a cover weight. The cover weight is between one quarter and one half ounces per foot.

A manufacturing method of a sound insulating layer by application of raw materials for urethane resin, by applying row materials for urethane resin in their liquid states along a surface of a porous layer of a soundproof body to manufacture as the sound insulating layer.