A stitched multi-axial reinforcement and a method of producing a stitched multi-axial reinforcement. The stitched multi-axial reinforcement (40) may be used in applications where high quality and strength is required. The stitched multi-axial reinforcement includes at least two sets of mono- or bonded multifilaments arranged transverse to one another between reinforcing layers for ensuring good resin flow properties in directions transverse to the direction of the unidirectional rovings (20′, 32′).

A composite construction, such as, in particular, a composite plate having a sandwich-type construction, has two outer layers which are mutually opposed in parallel and a foam material completely filling the space between the outer layers at least in some regions. The outer layers are interconnected by means of spacers, and the spacers are connected to the outer layers via a cured plastics material.

A composite construction, such as, in particular, a composite plate having a sandwich-type construction, has two outer layers which are mutually opposed in parallel and a foam material completely filling the space between the outer layers at least in some regions. The outer layers are interconnected by means of spacers, and the spacers are connected to the outer layers via a cured plastics material.

A joined member assembly method includes: a step in which a substrate is inserted in a gap between a superposed first component and a second component, said substrate being configured from a multilayer fabric that is capable of expanding as a result of heating and that is flexible after expansion and a reinforcing material woven into the multilayer fabric; a step in which the substrate is heated and made to expand in the thickness direction; a step in which the gap is filled with a resin and the substrate is impregnated with the resin; and a step in which the resin is cured. A step in which a seam is created by machining in accordance with a measured gap shape is omitted.

A joined member assembly method includes: a step in which a substrate is inserted in a gap between a superposed first component and a second component, said substrate being configured from a multilayer fabric that is capable of expanding as a result of heating and that is flexible after expansion and a reinforcing material woven into the multilayer fabric; a step in which the substrate is heated and made to expand in the thickness direction; a step in which the gap is filled with a resin and the substrate is impregnated with the resin; and a step in which the resin is cured. A step in which a seam is created by machining in accordance with a measured gap shape is omitted.

A system for additively manufacturing an object comprises a fiber supply that dispenses elongate fibers, a resin supply that applies a resin to the elongate fibers to create a feedstock line with the resin in a first non-rigid uncured state, a rigidizing mechanism that transforms the resin from the first non-rigid uncured state to a rigid uncured state, a delivery guide that deposits the feedstock line along a print path, a feed mechanism that feeds the feedstock line through the delivery guide, a de-rigidizing mechanism that transforms the resin from the rigid uncured state to a second non-rigid uncured state, and a curing mechanism that transforms the resin from the second non-rigid uncured state to an at least partially cured state.

A system for additively manufacturing an object comprises a fiber supply that dispenses elongate fibers, a resin supply that applies a resin to the elongate fibers to create a feedstock line with the resin in a first non-rigid uncured state, a rigidizing mechanism that transforms the resin from the first non-rigid uncured state to a rigid uncured state, a delivery guide that deposits the feedstock line along a print path, a feed mechanism that feeds the feedstock line through the delivery guide, a de-rigidizing mechanism that transforms the resin from the rigid uncured state to a second non-rigid uncured state, and a curing mechanism that transforms the resin from the second non-rigid uncured state to an at least partially cured state.

A system for additively manufacturing an object comprises a source of a feedstock line, a rigidizing mechanism that receives the feedstock line from the source and transforms the resin from a first at least partially uncured state to a rigid at least partially uncured state, a delivery guide that deposits the feedstock line along a print path, a feed mechanism that feeds the feedstock line through the delivery guide, a de-rigidizing mechanism that transforms the resin from the rigid at least partially uncured state to a second at least partially uncured state, and a curing mechanism that transforms the resin from the second at least partially uncured state to an at least partially cured state.

A system for additively manufacturing an object comprises a source of a feedstock line, a rigidizing mechanism that receives the feedstock line from the source and transforms the resin from a first at least partially uncured state to a rigid at least partially uncured state, a delivery guide that deposits the feedstock line along a print path, a feed mechanism that feeds the feedstock line through the delivery guide, a de-rigidizing mechanism that transforms the resin from the rigid at least partially uncured state to a second at least partially uncured state, and a curing mechanism that transforms the resin from the second at least partially uncured state to an at least partially cured state.

A preform for a turbine engine blade, comprising a main fiber preform obtained by three-dimensional weaving and comprising: a first longitudinal segment, suitable for forming a blade root; a second longitudinal segment, extending upwards from the first longitudinal segment and suitable for forming an airfoil portion; and a first transverse segment, extending transversely from the junction between the first and second longitudinal segments to a substantially linear distal edge and suitable for forming a first platform; the preform further including at least one attachment tab provided under the first transverse segment at its distal edge, suitable for forming an attachment portion of the platform.