A thermoplastic product includes a fabric-based reinforcing sheet and a polymerized thermoplastic material. The fabric-based reinforcing sheet is wound about a mandrel to form a plurality of layers having a cross-sectional shape that corresponds to the mandrel. The fabric-based reinforcing sheet includes a plurality of fiber bundles, which may have a bidirectional orientation or configuration. A polymerized thermoplastic material is disposed within each layer of the fabric-based reinforcing sheet. The polymerized thermoplastic material bonds each layer of the fabric-based reinforcing sheet to an adjacent layer.

An installation for forming a fiber preform, includes a follower roller. The follower roller presents a profile in section that has at least a first slope forming an angle with the axis of the follower roller and a second slope forming a second angle with the axis of the follower roller that is different from the first angle. The installation also has at least one backing roller presenting a shape complementary to the first and second slopes, the installation including a holder for holding each backing roller and configured to hold the backing roller at a predetermined distance from the first and second slopes or configured to apply contact pressure from the backing roller against the first and second slopes.

A method of manufacturing a reinforced pipe (7) comprising: wrapping a pipe (1) in reinforcing tape (2) to form a wrapped pipe having an outer circumference consisting of a first circumferential portion (4) and a second circumferential portion (6); and passing the first circumferential portion (4) over one or more heating elements (3) to fuse the reinforcing tape (2) of said first circumferential portion (4); wherein: the first circumferential portion (4) is between 1% and 50% of the outer circumference; and the second circumferential portion (6) is not passed over a heating element (3) and is not fused. The method is advantageous in that it can provide reinforced pipes (7) in a simpler and cheaper way because it is not essential that the entirety of the outer circumference of the reinforced pipe (7) is fused. A reinforced pipe (7) produced according to the method of the present invention is also provided.

A basalt fiber composite rebar and method of manufacturing the same that includes producing an elongated body with an outer surface, two opposing terminal ends, a longitudinal length separating the two opposing terminal ends of the elongated body, of an epoxy matrix having a plurality of longitudinally oriented and twisted basalt fibers independently embedded and bonded therein and continually spanning along the longitudinal length, and a basalt fiber overlay directly coupled to the outer surface of the elongated body in a spiral configuration to define a plurality of fiber ribs spatially displaced from one another along the longitudinal length.

A device for selecting sperm includes a stack of a plurality of layers of a material. The stack has an inlet end and an outlet end. Each layer of the material includes a plurality of sperm selection microchannels. Each sperm selection microchannel has a respective microchannel inlet at the inlet end of the stack and extends to a respective microchannel outlet at the outlet end of the stack.

Method for producing a casing made of a composite material for an aircraft turbine engine, the casing having an annular shape and including an annular fibrous preform formed by winding a fibrous cloth soaked in a polymer matrix, the method including the steps of: a) positioning an edge of the cloth on a molding drum, this cloth having a generally elongate shape and the edge being located at a first longitudinal end of the cloth, b) winding the cloth on the drum, over at least one rotation, so as to obtain the preform wound around the drum, c) molding of the preform and hardening of the resin which is injected into the preform or pre-impregnated on the preform, wherein the method includes, before step a), a step i) of mounting a removable stop on the drum, and in that step a) includes abutting the edge against this stop.

The invention relates to a method and a device for manufacturing a pipe shell from an insulating material by means of which the cycle times can be further reduced while the quality of the pipe shell is simultaneously improved, by at least one web (29) of the insulating material which is provided with a binding agent being wound around a core (19) by means of at least two opposing belts (12, 13) which wrap around the core (19) partially. The method steps are characterized in that the at least one wound-up web (32) of insulating material is removed in a radial direction of the core (19) which is, however, not opposite to the direction in which the at least one web (29) of insulating material was fed by the one belt (12), especially by the wound-up web (32) being discharged through the same belt (12).

Methods and systems are disclosed for encasing various structures with a seamless continuous sleeve, where the presence of existing supports does not allow slipping a sleeve over the structure. In these methods strips of fabrics smeared with or saturated by resin are helically or non-helically wrapped or placed around desired shape mandrels that are located around a support of the structure. As the resin is partially cured, a portion of the sleeve segment is moved away from the mandrel, leaving the rest of the sleeve on the mandrel to be attached to the next will-be-fabricated sleeve segment. The process will continue as many times as needed to create a sleeve of a desired length. In various embodiments the strength of the sleeves varies at different locations. In some embodiments the gaps between the sleeves and the structures are filled with gas, liquid, solid, or any other materials.

Multi-ply, hybrid composite materials useful in the formation of thin walled, hollow, tubular articles having improved resistance to hoop stress. Two different, single-ply pre-pregs are impregnated with binders and laminated together with the fibers of the layers oriented at a bias relative to each other. The hybrid composite is rolled into a tubular article having excellent strength uniformity along the full length of the tubular article.

Embodiments are directed to systems and methods for creating a tubular composite structure. In one embodiment, a device comprises multiple layers of cured composite fabric bonded together to form a tubular composite structure, wherein alternating groups of the multiple layers comprise on-axis fabric and off-axis fabric. The tubular composite structure may form a spar for an aerodynamic component. The composite fabric may comprise one or more of carbon, fiberglass, or other composite materials, or a combination of materials. One or more stacks of the fabric wrap completely around the tubular composite structure, and other stacks of fabric may not wrap completely around the tubular composite structure.