A method for preparing a part using a rigid tool surface having a shape. The method includes applying a breather sheet comprising gas-permeable material over the rigid tool surface. A vacuum bag is applied over the breather sheet, and a vacuum pressure is applied underneath the vacuum bag to conform the breather sheet and the vacuum bag to the shape of the rigid tool surface. A resin pre-impregnated ply is applied over the vacuum bag, and the part is positioned over the ply.

A method for preparing a part using a rigid tool surface having a shape. The method includes applying a breather sheet comprising gas-permeable material over the rigid tool surface. A vacuum bag is applied over the breather sheet, and a vacuum pressure is applied underneath the vacuum bag to conform the breather sheet and the vacuum bag to the shape of the rigid tool surface. A resin pre-impregnated ply is applied over the vacuum bag, and the part is positioned over the ply.

One embodiment of a method according to the present disclosure may use a fixture with one or more boot recesses formed therein. An embedded member may be engaged with a boot and placed in a boot recess. Substrate lay-up may be placed around all or a portion of the embedded member and an outer member may be positioned over the substrate lay-up. A cover may be positioned over the outer member and engaged with the fixture. The pressure within an interior portion of the fixture may be reduced to less than ambient pressure and resin may be introduced to interact with the substrate lay-up and allowed to cure.

Methods and systems for consolidating an additively manufactured piece. In one embodiment, methods include the step of combining the additively manufactured piece with another piece, for example with another additively manufactured piece or with a piece that is not additively manufactured (e.g. an insert, foam, etc.), so that during a consolidation step, those pieces are assembled or connected together.

Methods and systems for consolidating an additively manufactured piece. In one embodiment, methods include the step of combining the additively manufactured piece with another piece, for example with another additively manufactured piece or with a piece that is not additively manufactured (e.g. an insert, foam, etc.), so that during a consolidation step, those pieces are assembled or connected together.

An object is to provide a composite material manufacturing method for improving interlayer strength. The present disclosure provides a composite material manufacturing method of laminating a plurality of prepregs (10) formed of a fiber reinforced base material impregnated with an uncured matrix resin and performing hot molding, the method including: using the prepregs (10) each provided with a gap layer (12) that does not contain a resin and is continuous in an in-plane direction and resin layers (11a, 11b) disposed on both surfaces of the gap layer; disposing a plurality of short fibers (13) on facing surfaces of the prepregs (10) that are adjacent to each other; and evacuating the laminated prepregs (10) to degas the gap layer (12) and then performing hot molding.

Methods of manufacturing composite workpieces that include positioning a heat-generating element proximate to an uncured composite workpiece, triggering the heat-generating element to produce an exothermic chemical reaction or exothermic physical reaction so that the temperature of the uncured composite workpiece is raised to a predetermined first temperature, and curing the composite workpiece while it is at a temperature that is at least the predetermined first temperature.

An uncrosslinked rubber shaped structure for belt production is placed in a belt mold with the uncrosslinked rubber shaped structure having a bent portion that is bent inward. A space inside the uncrosslinked rubber shaped structure is partitioned into a first space and a second space. The first space corresponds to a first shaped structure portion of the uncrosslinked rubber shaped structure, the first shaped structure portion including the bent portion. The second space corresponds to a second shaped structure portion of the uncrosslinked rubber shaped structure that is a portion of the uncrosslinked rubber shaped structure except the first shaped structure portion. An expansion member is expanded in the second space to press the second shaped structure portion toward the belt mold.

A screw system including a plurality of segmented blades. Each blade segment of the plurality of blade segments including a mounting portion and a vane portion. The mounting portion, having a helical length, for removably attaching the blade segment. The vane portion extending from the mounting portion along the helical length thereof. The vane portion having a front surface that is not parallel to a back surface from the mounting portion to a tip of the blade segment, along the helical length.

An intermediate base material has high handleability and shape conformity to complicated shapes and serves to perform high-yield production, even by low pressure molding, of fiber reinforced plastic material that do not suffer from significant generation of molding defects, such as creases and voids, that can cause a decrease in strength and that has good mechanical characteristics, decreased variations therein, and high dimensional stability. The prepreg includes a layer containing reinforcement fibers impregnated with a resin composition and the impregnation rate with the resin composition in the prepreg is in a predetermined range. It is characterized by being an incised prepreg having a plurality of incisions, being at least partly formed of reinforcement fibers with a predetermined fiber length, and having a reinforcement fiber content by volume Vf in a predetermined range.