公开(公告)号：US20140315457A1

公开(公告)日：2014-10-23

申请号：US14365307

申请日：2012-12-10

Applicant: SNECMA

Inventor： Yann Marchal ,  Dominique Coupe ,  Monica Fruscello ,  Jonathan Goering

IPC: D03D25/00

CPC classification number: D03D25/005 ,  B29B11/16 ,  B29C70/222 ,  B29L2031/003 ,  Y10T442/20

Abstract: A fiber preform is formed by a fiber structure woven by three-dimensional weaving with a plurality of layers of warp yarns interlinked by weft yarns of a plurality of layers of weft yarns, the fiber preform having a first portion and a second portion that extend one another in the weft direction and that are at an angle to each other. In the fold zone and in each weft plane of the fiber structure, two weft yarns situated in a region adjacent to an outside face of the fiber structure situated on the inside of the corner present paths that cross, so that less curvature is imposed on these yarns.

Abstract translation: 纤维预成型体由通过三维织造编织的纤维结构形成，多层经纱由多层纬纱的纬纱相互连接，纤维预制件具有第一部分和第二部分，其延伸一个 另一个在纬向上并且彼此成一角度。 在纤维结构的折叠区域和每个纬纱平面中，位于与位于拐角内侧的纤维结构的外表面相邻的区域中的两根纬纱呈现交叉的路径，因此对这些纬纱施加较少的曲率 纱线。

公开(公告)号：US09551094B2

公开(公告)日：2017-01-24

申请号：US14365215

申请日：2012-12-10

Applicant: SNECMA

Inventor： Yann Marchal ,  Dominique Coupe ,  Monica Fruscello ,  Jonathan Goering

IPC: D03D25/00 ,  B29C70/24 ,  B29B11/16 ,  B29C70/22

CPC classification number: D03D25/005 ,  B29B11/16 ,  B29C70/222 ,  B29C70/24 ,  Y10T428/24174

Abstract: A fiber preform of π-shaped section, the preform including a base with a first face and an opposite second face, legs extending from the second face, and a fiber structure woven as a single piece by three-dimensional weaving with a plurality of layers of warp or weft yarns linked interlinked by weft or warp yarns in a plurality of layers of weft or warp yarns. In each plane of the preform, the weft or warp yarns of a first group of weft or warp yarns extend continuously through the base between two opposite edges thereof, and weft or warp yarns of a second group of weft or warp yarns extend continuously from an end of one of the legs to an end of the other leg, passing via the base, with the yarns of the first group and the yarns of the second group presenting two mutual crossings.

Abstract translation: 一种具有π形截面的纤维预成型体，所述预成型体包括具有第一面和相对的第二面的基部，从第二面延伸的腿，以及通过三维编织而成单片的纤维结构，所述纤维结构具有多层 通过纬纱或经纱在多层纬纱或经纱中连接的经纱或纬纱。 在预成型件的每个平面中，第一组纬纱或经纱的纬纱或经纱在其两个相对边缘之间连续延伸通过基底，并且第二组纬纱或经纱的纬纱或经纱从 一条腿的一端到另一条腿的一端，经过基座，第一组的纱线和第二组的纱线呈现两个相互交叉。

公开(公告)号：US20140322485A1

公开(公告)日：2014-10-30

申请号：US14365215

申请日：2012-12-10

Applicant: SNECMA

Inventor： Yann Marchal ,  Dominique Coupe ,  Monica Fruscello ,  Jonathan Goering

IPC: D03D25/00

CPC classification number: D03D25/005 ,  B29B11/16 ,  B29C70/222 ,  B29C70/24 ,  Y10T428/24174

Abstract: A fiber preform of π-shaped section, the preform including a base with a first face and an opposite second face, legs extending from the second face, and a fiber structure woven as a single piece by three-dimensional weaving with a plurality of layers of warp or weft yarns linked interlinked by weft or warp yarns in a plurality of layers of weft or warp yarns. In each plane of the preform, the weft or warp yarns of a first group of weft or warp yarns extend continuously through the base between two opposite edges thereof, and weft or warp yarns of a second group of weft or warp yarns extend continuously from an end of one of the legs to an end of the other leg, passing via the base, with the yarns of the first group and the yarns of the second group presenting two mutual crossings.

Abstract translation: 所述预成型件包括具有第一面和相对的第二面的底座，从所述第二面延伸的腿部，以及通过三维编织而成为单件的纤维结构体，所述纤维预制件具有多个 纬纱或纬纱层由多根纬纱或经纱中的纬纱或经纱相互连接。 在预成型件的每个平面中，第一组纬纱或经纱的纬纱或经纱在其两个相对边缘之间连续延伸通过基底，并且第二组纬纱或经纱的纬纱或经纱从 一条腿的一端到另一条腿的一端，经过基座，第一组的纱线和第二组的纱线呈现两个相互交叉。

公开(公告)号：US20140349538A1

公开(公告)日：2014-11-27

申请号：US14365369

申请日：2012-12-10

Applicant: SNECMA

Inventor： Yann Marchal ,  Dominique Coupe ,  Monica Fruscello ,  Jonathan Goering

IPC: D03D25/00 ,  D03D1/00 ,  F01D5/14 ,  D03D13/00

CPC classification number: D03D25/005 ,  B29B11/16 ,  B29C70/24 ,  D03D1/00 ,  D03D13/00 ,  D10B2505/00 ,  F01D5/147 ,  F05D2220/36 ,  F05D2300/6012 ,  F05D2300/6034 ,  Y10T156/1051 ,  Y10T442/3203

Abstract: In a fiber structure woven as a single piece by three-dimensional weaving, first weft yarns interlink layers of warp yarns in a first portion of the fiber structure adjacent to a non-interlinked zone and also warp yarns of a second portion of the fiber structure beyond the non-interlinked zone, and second weft yarns interlink layers of warp yarns of the second portion of the fiber structure adjacent to the non-interlinked zone and also layers of warp yarns of the first portion of the fiber structure beyond the non-interlinked zone, such that the paths of the first and second weft yarns cross in at least one transition zone extending within the fiber structure from the end of the non-interlinked zone, the transition zone extending in the weft direction over a distance greater than the pitch between adjacent warp columns.

Abstract translation: 在通过三维织造编织为单件的纤维结构中，第一纬纱在纤维结构的与非互连区相邻的第一部分中的经纱相互连接层以及纤维结构的第二部分的经纱 超过非互连区域，以及第二纬纱与纤维结构的第二部分的邻近非互连区域的经纱的互连层以及纤维结构的第一部分的经纱层超过非互连的 使得第一纬纱和第二纬纱的路径在从非互连区域的端部延伸的纤维结构内的至少一个过渡区域中交叉，过渡区域在纬向方向上延伸大于间距 相邻经线之间。