US 12,203,483 B2
Fiber-reinforced composite part with increased vibration resistance
Bruno Jacques Gérard Dambrine, Moissy-Cramayel (FR); Bastien Tranquart, Moissy-Cramayel (FR); Dominique Marie Christian Coupe, Moissy-Cramayel (FR); and Marc-Antoine Colot, Moissy-Cramayel (FR)
Assigned to SAFRAN, Paris (FR)
Appl. No. 17/416,298
Filed by SAFRAN, Paris (FR)
PCT Filed Dec. 19, 2019, PCT No. PCT/FR2019/053209
§ 371(c)(1), (2) Date Jun. 18, 2021,
PCT Pub. No. WO2020/128367, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 1873851 (FR), filed on Dec. 21, 2018.
Prior Publication US 2022/0074309 A1, Mar. 10, 2022
Int. Cl. F04D 29/32 (2006.01); B29C 70/24 (2006.01); B29L 31/08 (2006.01); D03D 25/00 (2006.01)
CPC F04D 29/324 (2013.01) [B29C 70/24 (2013.01); D03D 25/005 (2013.01); B29L 2031/082 (2013.01); D10B 2505/02 (2013.01); F05D 2220/32 (2013.01); F05D 2300/6034 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A part for a turbomachine made of composite material comprising a fiber reinforcement having a three-dimensional weaving comprising a first set of yarns made of a first material, wherein the fiber reinforcement comprises a vibration-damping element formed by a second set of yarns comprising a second material which is viscoelastic and which is different to the first material, the second set of yarns being woven with the first set of yarns,
wherein the second material is made of a viscoelastic material having a shear loss factor greater than or equal to 0.2 over a temperature range between −50° C. and 120° C., the shear loss factor being determined by imposing a sinusoidal shear stress of a frequency equal to 100 Hz.