	US 12,012,867 B2
	Woven fibrous texture
Bruno Jacques Gérard Dambrine, Moissy-Cramayel (FR); Dominique Marie Christian Coupe, Moissy-Cramayel (FR); and Bastien Tranquart, Moissy-Cramayel (FR)
Assigned to SAFRAN, Paris (FR)
Appl. No. 17/416,318
Filed by SAFRAN, Paris (FR)
PCT Filed Nov. 29, 2019, PCT No. PCT/FR2019/052869 § 371(c)(1), (2) Date Jun. 18, 2021, PCT Pub. No. WO2020/128191, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 1873865 (FR), filed on Dec. 21, 2018.
Prior Publication US 2022/0065112 A1, Mar. 3, 2022
Int. Cl. F01D 5/28 (2006.01); D03D 15/275 (2021.01); D03D 25/00 (2006.01)

CPC F01D 5/282 (2013.01) [D03D 15/275 (2021.01); D03D 25/005 (2013.01); D10B 2505/02 (2013.01); F05D 2220/36 (2013.01)]

13 Claims

1. A woven fibrous structure intended to form a fibrous reinforcement of a turbomachine part, comprising first yarns bonded with second yarns, and at least one vibration damping element of viscoelastic material present in a recess defined by a de-bonding zone, said de-bonding zone separating, on a portion of the woven fibrous structure, a first surface part of the woven fibrous structure from a second part of the woven fibrous structure, wherein the first surface part of the woven fibrous structure is formed by a unidimensional layer of first yarns only comprising first yarns extending essentially in a same direction, or by a two-dimensional fabric in which the first yarns are bonded with the second yarns and wherein the second part of the woven fibrous structure is formed by a three-dimensional fabric in which the first yarns are bonded with the second yarns.