B29C35/0288

Automated fiber-placement systems and methods

An automated fiber-placement method comprises delivering a first quantity of pulsed energy to first portions of at least one fiber-reinforced tape strip, and delivering a second quantity of pulsed energy to second portions of at least the one fiber-reinforced tape strip, alternating with the first portions. Each one of the second portions at least partially overlaps two adjacent ones of the first portions such that overlapping regions of the first portions and the second portions have a higher temperature than non-overlapping regions of the first portions and the second portions. The automated fiber-placement method further comprises laying down at least the one fiber-reinforced tape strip against a substrate along a virtual curvilinear path, such that (i) at least the one fiber-reinforced tape strip is centered on the virtual curvilinear path, and (ii) the overlapping regions are transformed into discrete tape-regions, geometrically different from the overlapping regions.

Apparatus and method for emulating temperature during a thermal cure cycle

An apparatus includes a enclosure assembly including an enclosure assembly-leading end and an opposed enclosure assembly-lagging end, and a temperature emulation assembly mounted within the enclosure assembly and including a temperature emulation assembly-leading end located proximate to the enclosure assembly-leading end and a temperature emulation assembly-lagging end spaced away from the enclosure assembly-lagging end. The enclosure assembly thermally isolates the temperature emulation assembly. The enclosure assembly permits conductive heat transfer to the temperature emulation assembly only through the enclosure assembly-leading end.

AUTOMATED FIBER-PLACEMENT SYSTEMS AND METHODS AND ARTICLES PRODUCED THEREFROM
20200307124 · 2020-10-01 ·

An automated fiber-placement method comprises delivering a first quantity of pulsed energy to first portions of at least one fiber-reinforced tape strip, and delivering a second quantity of pulsed energy to second portions of at least the one fiber-reinforced tape strip, alternating with the first portions. Each one of the second portions at least partially overlaps two adjacent ones of the first portions such that overlapping regions of the first portions and the second portions have a higher temperature than non-overlapping regions of the first portions and the second portions. The automated fiber-placement method further comprises laying down at least the one fiber-reinforced tape strip against a substrate along a virtual curvilinear path, such that (i) at least the one fiber-reinforced tape strip is centered on the virtual curvilinear path, and (ii) the overlapping regions are transformed into discrete tape-regions, geometrically different from the overlapping regions.

STEERABLE HEAT SOURCE
20200307035 · 2020-10-01 ·

An apparatus includes a pressure vessel and a steerable heat source disposed within the pressure vessel. The apparatus also includes one or more control systems coupled to the steerable heat source. The one or more control systems are configured to direct supplemental heat toward a targeted region within the pressure vessel using the steerable heat source.

METHOD OF SHAPING COMPOSITE BLADE
20200298521 · 2020-09-24 ·

Provided is a method of shaping a composite blade made of a composite material by curing prepreg in which reinforcing fibers are impregnated with resin. A foaming agent disposed in an internal space of the composite blade contains a plurality of foaming bodies and foaming agent resin. The foaming bodies foam by being heated. The foaming agent resin cures by being heated. The foaming bodies include low-temperature side foaming bodies and high-temperature side foaming bodies. The low-temperature side foaming bodies foam in a low temperature range during a curing step. The high-temperature side foaming bodies foam in a high temperature range corresponding to temperatures higher than the low temperature range during the curing step.

Intensive Use Furniture
20200281358 · 2020-09-10 ·

The invention is an intensive use furniture item made by a two step molding process using heat zone control in the mold to dispense different plastic charges into the mold while controlling zones of the mold with heat being applied and thermal insulators separating mold zones for molding the bed or part of plastics differing in characteristics such as color, durability, surface finish and chemical resistance.

THERMOGRAPHIC INSPECTION FOR TAPE LAYUP MACHINES
20200283171 · 2020-09-10 ·

Systems and methods are provided for thermal inspection of tape layup. One embodiment is a method for performing inspection of a tape layup. The method comprises laying up tape onto a surface of a laminate, applying heat to tack the tape to the surface, and generating thermographic images of the tape as applied to the surface.

Apparatus and method for selective laser sintering an object with a void
10766197 · 2020-09-08 · ·

A method of producing an object from a polymer powder using a laser sintering system, whereby the laser sintering system introduces heat energy to solidify select points of a layer of polymer powder according to build data of the object and adjusts the heat energy according to solidification of select points of other layers.

Assembly and method for managing the temperature of a mould tool
10759104 · 2020-09-01 · ·

A mould tool (100) defining a workpiece profile has a first fluid-based temperature control assembly configured to control the temperature of the mould tool (100) which exhausts to a peripheral chamber (160) proximate the periphery of the workpiece profile (100) to reduce a temperature difference between the mould tool (100) and the surrounding environment.

THERMALLY CONDUCTIVE CURING PROCESS FOR COMPOSITE ROTORCRAFT STRUCTURE FABRICATION

A thermally conductive curing process adds conductive additives to create pathways for dissipating heat during a curing process, thereby reducing the cure time, increasing the output capability, and reducing cost. Conductive particles or short fibers can be dispersed throughout the resin system or composite fiber layers in pre-impregnated or RTM-processed composite material. By disposing conductive particles or short fibers in a resin as part of the curing process, heat generated during the curing process can dissipate more quickly from any type of composite, especially thick composites. Conductive additive examples include multi-walled carbon nanotubes (MWCNTs), single-walled carbon nanotubes (SWCNTs), graphene/graphite powder, buckyballs, short fibrous particulate, nano-clays, nano-particles, and other suitable materials.