US 12,076,949 B2
Repair of organic matrix composite parts
Mathieu Julien Charlas, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/312,672
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Dec. 11, 2019, PCT No. PCT/FR2019/053014
§ 371(c)(1), (2) Date Jun. 10, 2021,
PCT Pub. No. WO2020/120902, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 1872885 (FR), filed on Dec. 13, 2018.
Prior Publication US 2022/0048260 A1, Feb. 17, 2022
Int. Cl. B29C 73/02 (2006.01); B29C 73/26 (2006.01); F01D 5/00 (2006.01); F01D 5/28 (2006.01); B29L 31/08 (2006.01)
CPC B29C 73/02 (2013.01) [B29C 73/26 (2013.01); F01D 5/005 (2013.01); F01D 5/282 (2013.01); B29C 2073/264 (2013.01); B29K 2995/0008 (2013.01); B29L 2031/082 (2013.01); F05D 2230/31 (2013.01); F05D 2230/80 (2013.01); F05D 2300/507 (2013.01); F05D 2300/603 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A process for repairing a part made of organic matrix composite material coated with at least one layer of paint comprising the following steps:
a) removing the at least one layer of paint at a damaged area of the part,
b) removing the organic matrix composite material at the damaged area so as to form a recessed portion,
c) depositing a repair resin in the recessed portion,
d) curing the repair resin,
e) applying at least one layer of paint to the repair area,
wherein the repair resin is loaded with magnetically detectable particles, and
wherein the process further comprises, prior to steps a) through e), a step of checking for an absence of a repair resin at a determined distance from the damaged area.