摘要:
A method and device of positioning a ply of material for a composite component along an arcuate surface are presented. The ply comprises two end portions and a plurality of fiber tows extending longitudinally between the two end portions. The arcuate surface has a curved edge and a planar surface extending from the curved edge. The method comprises placing a first longitudinal edge portion of the ply along the curved edge; and rotating at least one of the two end portions away from the arcuate surface about a pivot axis normal to the ply, so as to cause sliding of at least some of the plurality of fiber tows relative to each other, and substantial aligning of the plurality of fiber tows in a curved direction along the arcuate surface. A method of positioning a ply of material for a composite component onto a curved mandrel is also presented.
摘要:
This invention relates to a use of a non-woven thermoplastic resin in combination with a curable moulding material comprising a fibrous reinforcement material and a thermoset resin material by bringing the thermoplastic resin in contact with the curable moulding material during or following assembly of the moulding material. The thermoplastic resin has a melting point below the gel temperature of the thermoset resin material to reduce the void fraction and increase the ILSS of a cured moulding manufactured from said moulding material forming a laminate structure in comparison to a cured moulding manufactured from said moulding material in which the fabric is absent forming the laminate structure.
摘要:
An infusible, unidirectional fabric containing a plurality of unidirectional fibers spaced uniformly in the unidirectional fabric, a plurality of bridges, and a plurality of void spaces between the unidirectional fibers. Each bridge is connected to at least 2 unidirectional fibers and at least 70% by number of fibers have at least one bridge connected thereto forming a bridged network of unidirectional fibers. The void spaces are interconnected and the fabric has a volume fraction of voids of between about 8 and 70%, a volume fraction of fibers of between about 35 and 85%, and at least 50% by number of the bridges have a bridge width minimum less than about 2 millimeters.
摘要:
A case for a gas turbine engine includes a containment section with a plurality of unidirectional roving fiber layers and a plurality of non-crimp fabric layers. A method of manufacturing the case includes winding the plurality of unidirectional roving fiber layers around the plurality of non-crimp fabric layers.
摘要:
The invention relates to a component structure consisting of superposed, wound layers of yarn sheets (3, 4) consisting of high-tensile threads (2), the position of the threads in the yarn sheet that extends longitudinally being fixed by a textile structure (5) composed of intersecting thread systems. Preventing the load-bearing thread layers from intersecting produces an almost infinitely variable angular orientation that is adapted to the exerted stresses, in addition to a restriction of the number of threads required to achieve the latter.
摘要:
La présente invention concerne un produit composite résistant à la corrosion obtenu à partir de fils composites formés par un co-mêlage en phase d'étirage de filaments en une matière thermoplastique, et de filaments en une matière de renfort minérale et résistante à la corrosion basique et/ou acide, au moins une partie la matière thermoplastique étant fondue. La matière de renfort minérale comprend du verre AR, et le produit composite est choisi parmi l'un au moins des produits suivants: un produit composite obtenu à partir desdits fils composites sous forme de granulés, une grille, un tissu, un tricot multidirectionnel, une tresse, un ruban continu, un corps creux, un profilé pultrudé comme élément de charpente, de passerelle, comme renfort de structure composite, comme visserie, un produit moulé obtenu par un mat en les fils composites continus dans une matière thermoplastique fondue, un produit copultrudé obtenu à partir de bande(s) de tissus en lesdits fils composites et d'un faisceau en lesdits fils composites continus Elle concerne également l'utilisation de ce produit composite.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung von ein- oder mehrschichtigen Faservorformlingen 1,17 im TFP-Verfahren mit insbesondere kraftflussorientiert ausgerichteten Fasersträngen 2-8,18, wobei die Faservorformlinge 1,17 eine nahezu beliebige Materialstärke ohne störende Tragschichten und eine nahezu beliebige Oberflächengeometrie aufweisen, mit den Schritten: - Ablegen und Anheften der Faserstränge 2 bis 8,18 auf einer flexiblen und elastischen Unterlage 9,19, insbesondere einer mit einem Elastomer gebildeten Unterlage 9,19, mit einem durch einen Nähkopf geführten Fixierfaden 10,1 1 zur Bildung des Faservorformlings 1,17 und - Abheben des Faservorformlings 1,17 von der elastischen und flexiblen Unterlage 9,19. Die mittels des erfindungsgemäßen Verfahrens hergestellten Faservorformlinge 1,17 weisen eine nahezu optimale, das heißt im Wesentlichen kraftflussorientierte Faserausrichtung sowie keine nennenswerten Störstellen in der Faseranordnung auf und ermöglichen somit die Schaffung von mechanisch extrem beanspruchbaren und zugleich leichten Verbundbauteilen, beispielsweise durch eine anschließende Verarbeitung im RTM-Verfahren.
摘要:
The invention describes a method and a device (101) for producing a longitudinal fibre web (100), in which fibres (2) are continuously applied, in the longitudinal direction, to a substrate web (6). In a pretreatment section, a relatively high tensile force (F) has to be exerted on the fibres, resulting in a relatively great strain ( epsilon ). Before the fibres (2) are applied to the substrate web (6), the stress in the fibres is reduced. The drive for the fibres in the pretreatment section is separate from the drive for the substrate web, the transport velocity of the fibres in the pretreatment section being controlled separately as a function of the transport velocity of the substrate web, in such a manner that the transport velocity of the fibres in the relaxed state is substantially equal to the transport velocity of the substrate web in the relaxed state. The result is a longitudinal fibre web (100) which is substantially free of length differences and stress differences between the fibres (2) and the substrate web (6).