The invention herein relates to a flywheel capable of high speed rotational operation in excess of 15,000 rpm, the flywheel comprising a composite rotor having a polymeric matrix in which are embedded fibers helically wound at an initial angle with respect to the axis of rotation of the rotor of from about 50° to about 80° and increasing in a stepwise or continuous manner to about 90°.

A method for producing a hybrid component may include placing a metallic insert part into an injection mould, at least one of over-moulding and back-injecting the metallic insert part with a plastic mass, and pretreating a surface of the metallic insert part that is to be at least one of over-moulded and back-injected prior to the at least one of over-moulding and back-injecting. The metallic insert part may be placed into the injection mould such that the metallic insert part protrudes from the plastic mass on at least one side. A material accumulation may be disposed on a transition region from the metallic insert part to the plastic mass.

Improvements in the extrusion of thermohardenable materials are achieved by cooling the material in the initial zone of the extruder and reducing residence time by use of a prescribed length to diameter ratio and screw speed, particularly useful for intermittent application during robotically controlled mass production.

This invention relates to a method for manufacturing an individualized immobilization element for the non-invasive immobilization and/or mobilization of at least a segment of a body part of a patient in a predetermined position relative to a reference and/or in a pre-certain configuration. The method comprises the steps of (i) providing a data set that comprises a three-dimensional image of an outer contour of at least a part of the segment of the body part to be immobilized and/or mobilized and (ii) the manufacture of at least a part of the immobilization element by rapid manufacturing of a shape on the basis of said data set using a polymeric material containing a thermoplastic polymer having a melting point less than or equal to 100° C., wherein the polymer material contains a nucleating agent for enhancing the of the crystallization of the thermoplastic polymer.

A method for renovating the interior of a hollow structure such as a sewerage pit (1) is described. The method provides an access opening (16) to the hollow structure (1); provides a plurality of material sheets (3) comprising reinforcing fibers and a curable resin composition through the access opening (16) and against a wall (11a, 11b) of the hollow structure (1); and provides an inflatable pressure means (4a, 4b) within the hollow structure (1). The pressure means (4a, 4b) are inflated against the wall (11a, 11b). A curing means (6) is then provided within the hollow structure (1) for curing the resin composition; and the resin composition is cured to harden the material sheets and provide a renovated interior of the hollow structure (1).

A structural reinforcement for an article including a carrier that includes: (i) a mass of polymeric material having an outer surface; and (is) at least one consolidated fibrous insert having an outer surface and including at least one elongated fiber arrangement having a plurality of ordered fibers arranged in a predetermined manner. The fibrous insert is envisioned to adjoin the mass of the polymeric material in a predetermined location for carrying a predetermined load that is subjected upon the predetermined location (thereby effectively providing localized reinforcement to that predetermined location). The fibrous insert and the mass of polymeric material are of compatible materials, structures or both, for allowing the fibrous insert to be at least partially joined to the mass of the polymeric material. Disposed upon at least a portion of the carrier will be a mass of activatable material.

Techniques for forming a helical rubber hose are provided. Such techniques include modified crosshead extrusion techniques in which an elastomer is melted, fed into a crosshead assembly, and extruded on a helical mandrel fed through the crosshead assembly to form a hose. In techniques described herein, relative axial and rotational motion of the mandrel and a die plate at or on the outlet or output of the crosshead assembly are kinematically matched such that the distance of relative axial movement of the mandrel per one revolution equals one pitch of the mandrel.

A fiber-reinforced resin article with excellent mechanical properties can be provided efficiently in a short time. The method includes 3D printing including forming fibers and a resin by a 3D printer, and pressurizing the 3D printed article formed by the 3D printing step, in which the pressurizing is performed at a temperature at which the resin of the 3D printed article is softened, and heating to the temperature at which the resin is softened is performed by induction heating.

A method for producing a composite material in which a first fabric and a second fabric made from a fiber material are impregnated with a thermosetting resin and integrally molded, wherein a resin flow path through which thermosetting resin flows is provided between the first fabric and the second fabric, and the first fabric and the second fabric are impregnated with thermosetting resin from the resin flow path as well as being impregnated with thermosetting resin from the surface.

An additive manufacturing method includes removing material from a sheet to create a plurality of individual layer segments formed, placing at least two first layer segments adjacent to each other at the same height to form a first layer having a hollow interior, the at least two first layer segments defining a first portion of an exterior of a part, and placing at least one second layer segment above the at least two first layer segments to form a second layer having a hollow interior, the at least one second layer segment defining a second portion of the exterior of the part. The method includes attaching the first layer to the second layer and removing material from the first layer and from the second layer to form the part having a continuous surface that extends along the first layer and the second layer.