Safran

Compagnie Generale Des Etablissements Michelin

Marc-Antoine Colot

Dominique Marie Christian Coupe

François Charleux

Christophe Le Clerc

Richard Cornille

Bruno Jacques Gérard Dambrine

Yann Didier Simon Marchal

Bastien Tranquart

Xavier Legrand

Nicolas Maisonnave

Pierre Martin Michelsen

Julien LeFrancois

Enrico Giovanni Obert

Hubert Ostyn

Guillaume Tanchaud

Geneviève Pineau

A fibrous preform for forming the fibrous reinforcement of a composite material part, the fibrous preform being made as a single piece and obtained by three-dimensional weaving, the preform including first and second skins and a longitudinal stiffening portion connecting the first to the second skin, the longitudinal stiffening portion forming a stiffening element of the part in the longitudinal direction. The preform has an intermediate portion extending in the longitudinal direction between two end portions. The longitudinal stiffening portion includes, in the intermediate portion, longitudinal non-woven threads or strands held together by first transverse threads or strands coming from the first skin and second transverse threads or strands coming from the second skin. In the end portions, the longitudinal threads or strands of the longitudinal stiffening portion are woven with the transverse threads or strands.

Woven fibrous preform for producing a part from composite material, in particular a turbomachine blade

A part of a turbomachine made of composite material includes a fiber reinforcement having a three-dimensional weaving including a first set of yarns made of a first material, wherein the fiber reinforcement includes a vibration-damping element formed by a second set of yarns including 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.

Fiber-reinforced composite part with increased vibration resistance

A composite material part including reinforcement made of carbon fibers or yarns consolidated by an organic matrix. The part includes one or more thermally and electrically conductive portions in which the carbon fibers or yarns are free of matrix at least in part, the matrix-free carbon fiber or yarn portions being in contact with a material that is thermally and electrically conductive.

Composite material part having a thermally and electrically conductive portion, and a method of fabricating such a part

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Fontainebleau, France

Marc-Antoine Colot