B29C70/085

Structural Web
20220212419 · 2022-07-07 ·

A structural web having a fabric material element 20 that has been stitched or embroidered with a reinforcing fiber 24, the fabric material element 20 defining a peripheral region 28a, 30a, and the reinforcing fiber 24 extending onto the peripheral region 28a,30a, the fabric material element 20 and reinforcing fiber 24 being bent to take on a non-planar form with the peripheral region 28a, 30a angled to a main plane of the element 20 to define an engagement face for cooperation with another component 12, 14, and upon which at least part of the reinforcing fiber 24 is located.

Bicycle rims and method of manufacture thereof

A method of manufacturing a rim includes placing at least one braided sleeve on a core dimensioned to define a shape of an internal wall of the rim. The method includes inserting the braided sleeves placed on the core, inside a mold that is dimensioned to define a shape of an external wall shape of the rim. The method further includes injecting a resin inside the mold to contact the mold and impregnate the sleeves and other layers with resin. The method also includes curing the resin to form the internal and external walls of the rim and obtain a cured rim having the core connected thereto. The method further includes removing the cured rim and core from the mold and melting the core to get it out of the rim.

Composite vehicle crossmember

A vehicle crossmember is made from continuous fiber-reinforced polymeric material without the need for metallic structural reinforcements. The crossmember includes more than one fiber-reinforced material composition, including different amounts and/or types of fiber reinforcements along different lengthwise portions of a crossbar of the crossmember. Attachment points and stiffening ribs can be overmolded onto surfaces of the crossbar before assembling two halves of the crossbar together to form the crossmember.

THERMOPLASTIC MOULDED PART, METHOD FOR MANUFACTURING SAME, AND DUCT INCORPORATING SAME
20210316887 · 2021-10-14 ·

The invention relates to a thermoplastic molded part able to constitute a duct of an aerial vehicle or space vehicle, to a method of manufacturing same, and to this duct which comprises said part. For example, provided is a part according to the invention, which has an external surface (2) with symmetry of revolution at least in part, is such that the external surface comprises a multitude of integrally molded depressions (6) which are connected to one another in pairs by crests (7), and that: each of the depressions has a largest transverse dimension D between the adjacently paired crests of between 3 mm and 10 mm, measured in a direction d perpendicular to the crests delimiting each depression, and each of the crests has an apex of transverse width L measured in said direction d, where L<D.

PRESSURE VESSEL AND PRESSURE-VESSEL MANUFACTURING METHOD
20210310614 · 2021-10-07 · ·

A pressure vessel includes a liner including a cylindrical body and a dorm portion continuous with at least one end of the body in an axial direction and includes a reinforced fiber sheet covering an outer side of the liner and made of fabric. The reinforced fiber sheet includes first yarns arranged on the body and the dorm portion such that yarn main axes of the first yarns extend in the circumferential direction of the liner and second yarns arranged on the body and the dorm portion such that yarn main axes of the second yarns extend in the axial direction of the liner. A total number of the first yarns or the second yarns that exist per unit length in the axial direction of the liner is smaller in the dorm portion than in the body.

DEVICE AND METHOD FOR SHAPING A BLANK FOR THE FORMATION OF A STRUCTURAL THERMOPLASTIC PART
20210237376 · 2021-08-05 · ·

A device for shaping a blank for forming a thermoplastic structural part, the blank comprising reinforcing fibres embedded in a thermoplastic matrix, said shaping device comprising a support member for supporting a blank along a longitudinal axis, at least one heating member, at least one inclination member configured to modify the inclination of at least one part of the longitudinal portion of the blank at an angle of inclination that can be parameterised with respect to the horizontal plane in a plane transverse to the longitudinal axis, and a movement system from upstream to downstream along the longitudinal axis of the heating member and of the inclination member relative to the support member so as to successively modify the inclination of a part of each longitudinal portion of the blank.

Joint structure of a composite bicycle frame and manufacturing method thereof

A joint structure of a composite bicycle frame includes a base layer and at least one reinforcing layer. The base layer is made of a first polymeric matrix material doped with a plurality of first fibers. The first fibers have random fiber orientation, and the base layer has a first thickness. The reinforcing layer is adhesively connected to the base layer. The reinforcing layer is made of a second polymeric matrix material doped with a plurality of second fibers. The second fibers have a single fiber orientation. The reinforcing layer has a second thickness which is smaller than the first thickness of the base layer.

Method for repairing a composite part

A method for repairing damage to a composite part includes creating an aperture through the composite part and preparing the surfaces surrounding the aperture on both sides of the part; inserting a plurality of resin impregnated fibers through the aperture and spreading the end portions of the plurality of fibers radially against the prepared surfaces on both sides of the part; and maintaining contact of the plurality of fibers with the prepared surfaces while the resin cures.

COMPOSITE COMPONENTS AND METHODS OF MANUFACTURING COMPOSITE COMPONENTS USING MAGNETIC FORCES AT FIBER PREFORM SEAMS

A method of manufacturing a composite component according to various aspects of the present disclosure includes disposing a fiber preform in a mold. The fiber preform includes a first portion having a first edge and a second portion having a second edge. The first edge and the second edge cooperate to at least partially define a gap. One of the first portion or the second portion includes a first ferromagnetic material and the other of the first portion or the second portion includes a first magnetic or magnetizable component. The method further includes closing the gap by generating a magnetic field from the first magnetic or magnetizable component. The method further includes injecting a polymer precursor into the mold. The method further includes forming the composite component by solidifying the polymer precursor to form a polymer. The composite component includes the fiber preform and the polymer.

Method for producing a textile unidirectional fabric

Method for producing a textile unidirectional fabric, wherein at least one planar layer of multi-filament reinforcement threads arranged parallel to each other are woven with each other over transverse threads, wherein transverse threads having core-sheath structure and titer of 10 to 40 tex are used as transverse threads, wherein transverse threads have a first component, which structures sheath, and second component, which structures core, wherein first component has lower melting temperature than second component, first component is meltable thermoplastic polymer material and, via first component of transverse threads, adjacently arranged multi-filament reinforcement threads are connected to each other by hot melting, wherein alleys are formed in unidirectional fabric by interweaving multi-filament reinforcement threads together with transverse threads, by means of which a permeability of 10 to 600 l/dm2/min can be established. Preferred embodiment relates to method for producing unidirectional fabric having fleece. Further, a fiber preform, produced from unidirectional fabric.