ACOUSTIC PANEL WITH 3D PRINTED CELL STRUCTURE SUPPORT LAYER

• Main Authors: Hodgson, Benedict N, Higbie, Jeff
• Format: Patent
• Language: English
• Published: 02.11.2023
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PERFORMING OPERATIONS; PHYSICS; SOUND-PRODUCING DEVICES; TRANSPORTING

The disclosure describes acoustic panels (such as for gas turbine engines) and techniques for forming acoustic panels. In some examples, the acoustic panel comprises a coversheet comprising an outer face, an inner face, and a plurality of apertures extend from the outer face to the inner face. The acoustic panel also comprises a 3D printed support layer comprising a polymer and defining a plurality of cell openings, wherein a first side of the support layer opposite the cell openings is coincident with the inner face of the coversheet, and wherein the 3D printed support layer is 3D printed directly onto the inner face of the coversheet.