公开(公告)号：US20240279124A1

公开(公告)日：2024-08-22

申请号：US18571551

申请日：2022-06-20

Applicant: SAFRAN CERAMICS ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE DE BORDEAUX ,  INSTITUT POLYTECHNIQUE DE BORDEAUX

Inventor： Adrien DELCAMP ,  Marie LEFEBVRE ,  Cyril AYMONIER ,  Nicolas BISCAY

IPC: C04B35/80 ,  C04B35/628 ,  C04B41/00 ,  C04B41/53

CPC classification number: C04B35/80 ,  C04B35/62836 ,  C04B41/0072 ,  C04B41/5353 ,  C04B2235/5244

Abstract: A method for treating at least one silicon carbide fibre includes a surface layer including carbon and/or a silicon oxycarbide, the treatment including at least removing the surface layer from the fibre by placing in contact with an ammonia phase in the supercritical state.

公开(公告)号：US20210238778A1

公开(公告)日：2021-08-05

申请号：US17221439

申请日：2021-04-02

Applicant: SAFRAN CERAMICS ,  ALBANY INTERNATIONAL CORP.

Inventor： Marie LEFEBVRE ,  François CHARLEUX ,  Dominique COUPE ,  Brock GILBERTSON ,  Julie-Anne BOUCHET

IPC: D03D25/00 ,  B29C70/24

Abstract: A method of fabricating a fiber structure by multilayer three-dimensional weaving between a plurality of weft yarns and of warp yarns, the fiber structure having at least first and second portions that are adjacent in the warp direction, the first portion presenting, in a direction perpendicular to the warp and weft directions, a thickness greater than the thickness of the second portion, includes making the first portion using a step of three-dimensionally weaving warp and weft layers in which a fiber fabric is formed in the form of a Mock-Leno weave grid in a core of the first portion together with skins at a surface of the first portion, a weave of the skins being modified locally so as to deflect certain warp yarns from said skins and weave them with the fiber fabric in the form of the Mock-Leno weave grid.

公开(公告)号：US20200378042A1

公开(公告)日：2020-12-03

申请号：US16763900

申请日：2018-11-09

Applicant: SAFRAN CERAMICS ,  ALBANY INTERNATIONAL CORP.

Inventor： Marie LEFEBVRE ,  François CHARLEUX ,  Dominique COUPE ,  Brock GILBERTSON ,  Julie-Anne BOUCHET

IPC: D03D25/00 ,  B29C70/24

Abstract: A fiber structure includes a plurality of weft layers and of warp layers interlinked by multilayer three-dimensional weaving, the fiber structure having at least first and second portions that are adjacent in the warp direction, the first portion presenting, in a direction perpendicular to the warp and weft directions, a thickness that is greater than the thickness of the second portion, wherein the first portion has at its core at least one fiber fabric obtained by three-dimensional weaving of warp yarns and weft yarns in the form of a Mock Leno weave grid, the at least one fabric being present between two skins present at the surface of the first portion and being linked to the skins by warp yarns belonging to the skins that are locally deflected into the fabric.

公开(公告)号：US20220274354A1

公开(公告)日：2022-09-01

申请号：US17625233

申请日：2020-07-01

Applicant: SAFRAN CERAMICS

Inventor： Thierry Guy Xavier TESSON ,  Marie LEFEBVRE ,  David Mathieu Paul MARSAL

IPC: B29C70/24 ,  B29B11/12 ,  B29B11/16

Abstract: A manufacturing process of a fibrous preform for a composite material includes creating a fibrous texture by three-dimensional or multilayer weaving between a plurality of weft layers and warp layers, the fibrous texture including an extra-thick portion having a sacrificial portion and a useful portion adjacent to the sacrificial portion in the warp direction, the sacrificial portion, placing the fibrous texture in a forming toolset, shaping the fibrous texture so as to obtain a fibrous preform having a sacrificial portion and an adjacent useful portion, removing the sacrificial portion from the fibrous preform. When weaving the fibrous blank, one or more expansion elements are inserted into the weft layers located at the core of the sacrificial portion of the fibrous texture. Each expansion element has a cross-section greater than the cross-section or count of the weft threads or strands present in the useful portion.

公开(公告)号：US20220235498A1

公开(公告)日：2022-07-28

申请号：US17616604

申请日：2020-06-03

Applicant: SAFRAN CERAMICS

Inventor： Thierry Guy Xavier TESSON ,  Eric PHILIPPE ,  Marie LEFEBVRE ,  Aline PLANCKEEL

IPC: D03D25/00 ,  D06M23/00

Abstract: The invention relates to a three-dimensionally woven multilayer fibrous structure (20) having the same number of warp yarns woven at any level along the warp direction, the fibrous structure (20) comprising, in the warp direction, a first part (22) and a second part (24), the first part (22) having a thickness measured in a direction perpendicular to the warp and weft directions, greater than the second part (24), characterised in that the spacing between two weft planes along the warp direction is greater in the second part than in the first part (22), and in that the number of weft yarns is lower in the second part (24) than in the first part (22).

公开(公告)号：US20200181029A1

公开(公告)日：2020-06-11

申请号：US16312545

申请日：2017-06-28

Applicant: SAFRAN CERAMICS

Inventor： Aurélia CLERAMBOURG ,  Marie LEFEBVRE ,  Sébastien DENNEULIN ,  Eric PHILIPPE ,  Eric BOUILLON

IPC: C04B35/80 ,  C04B35/628 ,  C04B35/657 ,  D03D25/00

Abstract: A method of fabricating a composite material part including fiber reinforcement and a ceramic matrix present in the pores of the fiber reinforcement, the method including a) forming the fiber reinforcement by three-dimensionally weaving ceramic yarns, the fiber reinforcement as formed in this way presenting an interlock weave; b) forming a first ceramic matrix phase in the pores of the fiber reinforcement; c) after performing step b), introducing into the pores of the fiber reinforcement a powder that includes a mixture of SiC particles and of carbon particles; and d) infiltrating the fiber reinforcement obtained after performing step c), with an infiltration composition in the molten state including at least silicon so as to form a second ceramic matrix phase in the pores of the fiber reinforcement, thereby obtaining the composite material part.

公开(公告)号：US20180038021A1

公开(公告)日：2018-02-08

申请号：US15551441

申请日：2016-02-09

Applicant: SAFRAN CERAMICS ,  SAFRAN

Inventor： Marie LEFEBVRE ,  Dominique COUPE ,  François CHARLEUX

IPC: D03D11/00 ,  D03D15/00

CPC classification number: D03D11/00 ,  D03D15/0094 ,  D03D25/005 ,  D10B2101/08 ,  D10B2101/12 ,  D10B2101/16 ,  D10B2101/20 ,  D10B2505/02

Abstract: A fiber structure includes a plurality of weft layers and a plurality of warp layers interlinked with three-dimensional or multilayer weaving, the fiber structure including at least first and second portions that are adjacent in the warp direction, the first portion presenting thickness in a direction perpendicular to the warp and weft directions that is greater than the thickness of the second portion. The weft layers situated in the core of the first portion of the fiber structure include braids. The weft layers extending on either side of the weft layers including the braids and going as far as the skin of the first portion include yarns or strands, the braids presenting a section greater than the section of the yarns or strands.