Method for manufacturing a reinforced part, including the steps of: producing a support structure and then covering the support structure, at least partially, with at least one composite material including reinforcement fibres, with local adhesion of the support structure and/or the composite material, during positioning thereof, to ensure its retention on the support structure, the support structure being an integral part of the reinforcing part.

Method for manufacturing a reinforced part, including the steps of: producing a support structure and then covering the support structure, at least partially, with at least one composite material including reinforcement fibres, with local adhesion of the support structure and/or the composite material, during positioning thereof, to ensure its retention on the support structure, the support structure being an integral part of the reinforcing part.

A method for printing a three-dimensional part with an additive manufacturing system includes providing a consumable feedstock material comprising a semi-crystalline polymer containing one or more secondary materials, wherein the consumable feedstock material has a process window in which crystalline kinetics are either accelerated or retarded. The consumable feedstock material is melted in the additive manufacturing system. At least a portion of the three-dimensional part from the melted consumable feedstock material in a build environment maintained within the process window.

A three-dimensional model built with an extrusion-based digital manufacturing system, and having a perimeter based on a contour tool path that defines an interior region of a layer of the three-dimensional model, where at least one of a start point and a stop point of the contour tool path is located within the interior region of the layer.

The invention first relates to a method for welding at least two parts comprising a thermoplastic material and having respective surfaces to be welded, comprising: inserting an insert between the surfaces to be welded of the two parts; generating heat via said insert; wherein the insert moves in relation to the parts to be welded in a welding direction. The invention also relates to an installation adapted for implementation of this method.

The invention first relates to a method for welding at least two parts comprising a thermoplastic material and having respective surfaces to be welded, comprising: inserting an insert between the surfaces to be welded of the two parts; generating heat via said insert; wherein the insert moves in relation to the parts to be welded in a welding direction. The invention also relates to an installation adapted for implementation of this method.

Disclosed herein is a composite hollow fiber polymer membrane including a porous core layer and a selective sheath layer. The porous core layer includes a polyamide-imide polymer, or a polyetherimide polymer, and the selective sheath layer includes a polyimide polymer, which is prepared from monomers A, B, and C. The monomer A is a dianhydride of the formula ##STR00001##
wherein X.sub.1 and X.sub.2 are independently halogenated alkyl group, phenyl or halogen and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 are independently H, alkyl, or halogen. The monomer B is a diamino cyclic compound without a carboxylic acid functionality and the monomer C is a diamino cyclic compound with a carboxylic acid functionality. The polyimide polymer further includes covalent ester crosslinks. Also disclosed herein is a method of making the composite polymer membrane and a process for purifying natural gas utilizing the composite polymer membrane.

The present application relates to a blade of low pressure rectifier axial turbomachine. The blade can also be a rotor blade and/or a turbine blade. The blade includes a composite material with a matrix and a reinforcement that includes a mesh forming a three dimensional structure with a plurality of rods that describe a three-dimensional mesh based on polyhedrons. The three-dimensional structure extends over the majority of the thickness of the blade between the pressure side surface and the suction side surface and/or the majority of the length of the blade between the leading edge and the trailing edge. The rods of the reinforcement are bonded to each other and are distributed throughout the volume between the pressure side surface and the suction side surface of the blade. The rods form a three-dimensional mesh occupying the entire blade. The present application also relates to an iterative method for manufacturing a blade by additional layer manufacturing.

In a 3D composite printer, toolpaths defining fill material shells are received, as are toolpaths defining support material shells. A 3D toolpath defining a long fiber composite material curved shell is also received. A fill material deposition head traces the toolpaths to deposit some of the fill material shells or support material shells at least in part non-parallel to a printing substrate. A long fiber deposition head traces the 3D toolpath at least in part non-parallel to the printing substrate to deposit the long fiber composite material curved, concave, ring, tube, or winding shells to enclose, surround, or envelop at least a portion of the fill or support material shells.

A method of making a solvent cast polymer composite film comprising (a) contacting barium titanate, a titanate coupling agent (TCA) and a mixing solvent to form a barium titanate and TCA solution; (b) dispersing at least a portion of the barium titanate and TCA solution to form TCA treated barium titanate; (c) contacting at least a portion of the TCA treated barium titanate with a polyetherimide and a casting solvent to form a polymer composite casting solution; (d) casting at least a portion of the polymer composite casting solution onto a casting substrate to form a solvent cast polymer composite solution; and (e) curing at least a portion of the solvent cast polymer composite solution to form the solvent cast polymer composite film.