초록 ▼

A damped structural panel includes a panel having bending modes including demanding bending modes. The demanding bending modes have subsonic bending waves along at least one axis, and require damping treatment based on sound radiation properties of the panel. A viscoelastic material is applied withi

A damped structural panel includes a panel having bending modes including demanding bending modes. The demanding bending modes have subsonic bending waves along at least one axis, and require damping treatment based on sound radiation properties of the panel. A viscoelastic material is applied within a limited area adjacent to the panel edges based on the demanding bending modes. The viscoelastic material damps sound radiation caused by bending waves during use of the structural panel, such as use as a body panel on an aircraft.

대표청구항 ▼

[ What is claimed is:] [1.]1. A damped structural panel comprising:a panel with edges, the panel having bending modes including demanding bending modes which have subsonic bending waves along at least one axis, and which require damping treatment based on sound radiation properties of the panel; and

[ What is claimed is:] [1.]1. A damped structural panel comprising:a panel with edges, the panel having bending modes including demanding bending modes which have subsonic bending waves along at least one axis, and which require damping treatment based on sound radiation properties of the panel; anda viscoelastic material applied within a limited area adjacent to the panel edges based on the demanding bending modes, the viscoelastic material damping sound radiation caused by bending waves in the demanding bending modes,wherein the limited area is defined by maximum wavelengths for bending waves normal to the panel edges in the demanding bending modes, the limited area extending inwardly from each panel edge for at least about one-fourth of the maximum wavelength for the bending waves normal to that panel edge.