A fiber preform for a turbine engine blade and also a single-piece blade suitable for being formed using such a preform, a rotor wheel, and a turbine engine including such a blade, the fiber preform being obtained by three-dimensional weaving and comprising a first longitudinal segment suitable for forming a blade root (21), a second longitudinal segment extending the first longitudinal segment upwards and suitable for forming an airfoil portion (22), a first transverse segment extending transversely from the junction between the first and second longitudinal segments and suitable for forming a first platform (23), and a first stiffener strip extending downwards from the distal edge of the first transverse portion and suitable for forming a first platform stiffener (25).

The woven cloth includes a plurality of first threads, a plurality of second threads, and a plurality of third threads. Each first thread and each second thread are woven by a plurality of filaments respectively. Each first thread is interwoven with and ties the plurality of second threads and is interwoven with and ties at least part of the plurality of third threads. The third threads are not interwoven with the plurality of the second threads.

A woven textile is provided, including at least two blocks connected with each other. Each of the two blocks has an upper layer and a lower layer which are woven and fixed by a binding thread, and the upper layer and the lower layer are respectively composed of woven braids which extend meanderingly. The textile braid of the upper layer and the textile braid of the lower layer define a plurality of meshes, and the textile braids of the two blocks have different diameters so that the meshes on the two blocks have different dimensions.

A manufacturing method of a thermoelectric conversion device having a textile structure. The thermoelectric conversion device having a textile structure uses one or multiple types of thermoelectric yarns as thermocouples of a thermoelectric generator structure, and uses elastic insulating yarns as a main carrier portion of a textile article. The invention utilizes the characteristic of a textile article of having woven and overlapping warp and weft yarns, and the thermoelectric yarns are woven into a thermoelectric generator textile article by using a conventional weaving technique. The thermoelectric transfer performance and the performance of the main carrier thereof are adjusted by varying an interweaving structure of the textile article, placement positions of the thermoelectric yarns, and the length of the thermocouples thereof. The present invention is widely and flexibly applicable in the fields of sports and health, medical smart apparel, smart homes, wearable touch screens, electronics, even automobiles, architectures, and the like.

In the present disclosure, a method may include forming a three-dimensional composite fiber pre-form by three-dimensionally weaving a plurality of composite fibers. The composite fiber pre-form includes a plurality of open cells formed adjacent to and interlocked with each other, and a composite fiber forms at least a portion of a first side of a first open cell and at least a portion of a second side of a second open cell. The first open cell and the second open cell are adjacent to and interlocked with each other.

A fibrous structure includes a main plate and a sub-plate. The main plate, which is formed by a multi-layer textile, includes a plurality of stacked fiber layers. Each fiber layer includes main plate warps and main plate wefts. The sub-plate, which is formed by a multi-layer textile, includes a plurality of stacked fiber layers. Each fiber layer includes sub-plate warps and sub-plate wefts. The main plate and the sub-plate are integrally woven with each other in a state intersecting each other. The main plate wefts and the sub-plate wefts have a smaller volume density at an intersecting portion where the main plate and the sub-plate intersect than a portion separate from the intersecting portion.

An airbag base fabric satisfying characteristics A to D: (A) the cross-sectional deformation (WR), calculated by formula (1), of multifilament warp threads constituting a textile is 4.0 to 6.0,
WR=(Major axis of warp thread cross section in textile)/(Minor axis of warp thread cross section in textile)(1) (B) the cross-sectional deformation (FR), calculated by formula (2), of multifilament weft threads constituting the textile is 2.4 to 4.0,
FR=(Major axis of weft thread cross section in textile)/(Minor axis of weft thread cross section in textile)(2) (C) the single fiber cross-sectional shape of the multifilament threads constituting the textile is substantially circular, and (D) the multifilament threads constituting the textile have total fineness of 145 to 720 dtex, single fiber fineness of 2 to 7 dtex, and tensile strength of 6.5 to 8.5 cN/dtex.

An rear fairing for a pylon supporting an aircraft turbojet engine forms an aerodynamic surface covering the base of the pylon. The rear fairing is elongated in a longitudinal direction and includes a floor arranged opposite the hot gases exiting the turbojet engine and side walls constituting aerodynamic surfaces. The floor and the side walls include ceramic matrix composite materials made from preforms formed by layers of superimposed warp and weft yarns, the preforms have interlayer weaving yarns connecting the layers to one another.

A composite panel suitable for heating an environment includes a face sheet having a 3D woven structure and abutting the environment, and a first core layer positioned on a side of the face sheet opposite the environment. The 3D woven structure includes at least one z-fiber extending in a first direction, the first direction representing a thickness of the face sheet. The woven structure further includes a plurality of weft layers, each having a weft fiber extending in a second direction, and a warp layer disposed between the plurality of weft layers, the warp layer having a warp fiber extending in a third direction. The z-fiber extends along the plurality of weft layers across a full extent of the 3d woven structure in the first direction.

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