A method for manufacturing a sound absorption structure comprising a cellular panel, a porous layer positioned on a cellular panel first face, a reflective layer positioned on a cellular panel second face and a plurality of acoustic elements positioned in the cellular panel. The method comprises the steps of producing, for each acoustic element, a recess in the cellular panel opening out onto the first and second faces of the cellular panel, inserting the acoustic elements into their recesses, laying an anchoring layer on the second cellular panel face, curing or polymerization at a first pressure to connect each acoustic element to the cellular panel and/or to the anchoring layer, putting in place the porous layer and the reflective layer, and curing or polymerization at a second pressure to connect the porous layer and the reflective layer to the cellular panel.
PROCÉDÉ DE FABRICATION D'UNE STRUCTURE D'ABSORPTION ACOUSTIQUE COMPRENANT UN PANNEAU ALVÉOLAIRE INTÉGRANT DES ÉLÉMENTS ACOUSTIQUES ET STRUCTURE D' ABSORPTION ACOUSTIQUE OBTENUE À PARTIR DUDIT PROCÉDÉ
METHOD OF MANUFACTURING A SOUND ABSORPTION STRUCTURE COMPRISING A HOLLOW-WALLED PANEL INCORPORATING ACOUSTIC ELEMENTS, AND SOUND ABSORPTION STRUCTURE OBTAINED BY SAID METHOD
VERFAHREN ZUR HERSTELLUNG EINER SCHALLABSORBIERENDEN STRUKTUR MIT EINER WABENPLATTE, DIE AKUSTISCHE ELEMENTE ENTHÄLT, UND DURCH DIESES VERFAHREN ERHALTENE SCHALLABSORBIERENDE STRUKTUR
2023-02-22
Patent
Electronic Resource
French
IPC: | F02C Gasturbinenanlagen , GAS-TURBINE PLANTS / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F02K JET-PROPULSION PLANTS , Strahltriebwerke / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES |
European Patent Office | 2023
|PROCEDE DE FABRICATION D'UNE AME ALVEOLAIRE POUR PANNEAU ACOUSTIQUE
European Patent Office | 2019
|