Inductively heated slip sheet and methods of using

    公开(公告)号:US12285887B2

    公开(公告)日:2025-04-29

    申请号:US17653624

    申请日:2022-03-04

    Abstract: An induction curing system comprises a slip sheet and a power supply. The slip sheet comprises a layup surface configured to receive a composite material, a tool interface surface configured to interface with an upper surface of a tool, a rigid body extending between the layup surface and the tool interface surface, and an induction coil circuit within the rigid body of the slip sheet. The induction coil circuit is configured to heat the layup surface to a temperature sufficient to cure the composite material. The induction coil circuit has a diameter selected to generate heat using a power supply having a frequency below 150 kHz. The rigid body is configured to support the composite material during transport of the composite material. The power supply is coupled with the induction coil circuit, the power supply is selected based on the diameter of the induction coil circuit.

    THERMOPLASTIC BRAIDING FOR THE MANUFACTURE OF COMPOSITE ARTICLES

    公开(公告)号:US20250115008A1

    公开(公告)日:2025-04-10

    申请号:US18499107

    申请日:2023-10-31

    Abstract: A method of manufacturing a composite article comprises forming a braided lay-up including one or more braided layers around a braiding mandrel along at least a portion of a longitudinal axis of the braiding mandrel. Each braided layer may be formed by braiding tape segments of a fiber-reinforced thermoplastic resin tape applied at a tape tow orientation with thread segments applied at a thread tow orientation that is biased at an angle relative to the tape tow orientation. In an example, the thread segments include a thermoplastic resin thread that is integrated into a consolidated form of the braided lay-up following a consolidation process. In another example, the thread segments include a metallic thread that is removed from the braided lay-up prior to consolidation.

    Densification methods and apparatuses

    公开(公告)号:US11584101B2

    公开(公告)日:2023-02-21

    申请号:US16719357

    申请日:2019-12-18

    Abstract: An apparatus includes a first electrode exhibiting a first Seebeck coefficient, a second electrode exhibiting a second Seebeck coefficient greater than the first Seebeck coefficient, and particles between the first and second electrodes exhibiting a third Seebeck coefficient between the first and second Seebeck coefficients. An alternating current power supply is electrically connected to the first and second electrodes. Heat is generated due to the Peltier effect at a junction between the first electrode and the particles and at a junction between the second electrode and the particles. Heat is removed due to the Peltier effect at the junction between the first electrode and the particles and at the junction between the second electrode and the particles. The particles are densified due to heating and cooling phase transitions between a higher-temperature solid phase and a lower-temperature solid phase while compressing the particles.

    INDUCTIVELY HEATED SLIP SHEET AND METHODS OF USING

    公开(公告)号:US20220396012A1

    公开(公告)日:2022-12-15

    申请号:US17653624

    申请日:2022-03-04

    Abstract: An induction curing system comprises a slip sheet and a power supply. The slip sheet comprises a layup surface configured to receive a composite material, a tool interface surface configured to interface with an upper surface of a tool, a rigid body extending between the layup surface and the tool interface surface, and an induction coil circuit within the rigid body of the slip sheet. The induction coil circuit is configured to heat the layup surface to a temperature sufficient to cure the composite material. The induction coil circuit has a diameter selected to generate heat using a power supply having a frequency below 150 kHz. The rigid body is configured to support the composite material during transport of the composite material. The power supply is coupled with the induction coil circuit, the power supply is selected based on the diameter of the induction coil circuit.

    INDUCTION-HEATING SYSTEM INCLUDING A SUSCEPTOR FOR GENERATING INDUCTION HEATING BELOW A SELECTED CURIE TEMPERATURE

    公开(公告)号:US20220361300A1

    公开(公告)日:2022-11-10

    申请号:US17695246

    申请日:2022-03-15

    Abstract: An induction-heating system includes a susceptor located proximate to a flight surface of an aircraft. The susceptor comprises an array of wires arranged along a first axis. The array of wires is constructed of a ferromagnetic material having a selected Curie temperature. The induction-heating system also includes an electrically conductive coil including a plurality of coil windings oriented substantially perpendicular with respect to the first axis of the array of wires. The electrically conductive coil is configured to generate a magnetic field oriented substantially parallel with respect to the first axis of the array of wires. The electrically conductive coil is positioned to induce induction heating within the ferromagnetic material of the susceptor when the susceptor is below the selected Curie temperature.

    METHOD AND APPARATUS FOR FORMING NON-BONDED REGIONS IN MULTI-LAYERED METALLIC ARMOR

    公开(公告)号:US20210101365A1

    公开(公告)日:2021-04-08

    申请号:US16548657

    申请日:2019-08-22

    Abstract: Disclosed herein is a method of forming a multi-layered metallic part. The method comprises stacking at least two metallic layers, each made of a metallic material having a ductility, to form a multi-layered metallic assembly. The method also comprises interposing a diffusion-bond preventing element directly between adjacent ones of the at least two metallic layers of the multi-layered metallic assembly. The method further comprises diffusion bonding the at least two metallic layers to each other at locations other than a location contiguous with the diffusion-bond preventing element to produce a multi-layered metallic part having a non-bonded region between the at least two metallic layers at the location of the diffusion-bond preventing element.

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