Acoustic structure and method of manufacturing thereof

Details Acoustic structure and method of manufacturing thereof Acoustic structure and method of manufacturing thereof

2004-12-02

2009-02-03

Benson, Walter (Department: 2837)

Acoustics

Sound-modifying means

Sound absorbing panels

C181S290000, C181S210000, C181S203000, C244S00100R

Reexamination Certificate

active

07484593

ABSTRACT:
There is provided an acoustic structure and a method of manufacturing such acoustic structure. The acoustic structure comprises at least one uncured facesheet ply defining a plurality of perforations, an adhesive that includes a corresponding plurality of perforations, and a honeycomb core portion adhered to the facesheet ply by the adhesive. The acoustic structure undergoes a single curing process, advantageously an autoclave curing process, to cure the entire acoustic structure. By adhering at least one uncured facesheet ply to the honeycomb core portion, the curing process is capable of curing both the facesheet ply and the adhesive with a single curing process. The single curing process accordingly obviates additional process steps and a sacrificial adhesive layer typically used in other acoustic structures.

REFERENCES:
patent: 4826106 (1989-05-01), Anderson
patent: 5246520 (1993-09-01), Scanlon et al.
patent: 5604010 (1997-02-01), Hartz et al.
patent: 6190602 (2001-02-01), Blaney et al.
patent: 2004/0154252 (2004-08-01), Sypeck et al.
patent: 2004/0195718 (2004-10-01), Obrachta et al.
Loctite Aerospace,SynSpand® EA 9890/Expanding Syntactic Film(visited Dec. 2, 2004) http://www.loctite.com/int—henkel/loctite/binarydata/pdf/SynSpand—EA—9890.pdf.

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