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    Sealing interface for corrosion protection
    31.
    发明授权
    Sealing interface for corrosion protection 有权

    公开(公告)号：US10302198B2

    公开(公告)日：2019-05-28

    申请号：US15346325

    申请日：2016-11-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Marie-Christine G. Jones ,  William R. Rodgers ,  David R. Staley

    IPC: F16J15/02 ,  B60K15/03 ,  B65D8/00 ,  F16J15/06

    Abstract: A sealing interface configured to prevent galvanic corrosion of a container having parts made of dissimilar materials includes a first part, a second part, and a sealant. The first part has a first sealing surface and a first exterior surface substantially perpendicular to the first sealing surface. The second part has a second sealing surface and a second exterior surface substantially perpendicular to the second sealing surface. One of the parts includes an external sealing chamfer on the respective sealing surface extending to the respective exterior surface. The sealant at least fills a space formed between the external sealing chamfer and the sealing surface of the other of the parts when the parts are connected, forming a barrier between the parts such that the exterior surfaces of the parts are not in contact and are separated by the sealant. The exterior surfaces may be flush when the parts are connected.

    Methods of forming near-net fiber reinforced thermoplastic composite components
    37.
    发明授权
    Methods of forming near-net fiber reinforced thermoplastic composite components 有权

    公开(公告)号：US11584044B2

    公开(公告)日：2023-02-21

    申请号：US16555762

    申请日：2019-08-29

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Bhavesh Shah ,  William R. Rodgers ,  Mark A. Voss ,  Terrence Wathen

    IPC: B29C35/02 ,  B29C35/08 ,  B29D28/00 ,  B29C70/30 ,  B29C70/34 ,  B29C35/16 ,  B29C70/46

    Abstract: A method is provided for forming a near-net thermoplastic composite component includes co-spraying a mixture comprising a thermoplastic polymer material and a chopped reinforcing material deposited onto at least one region associated with a tool having a first temperature and defining a near-net component shape. The mixture and adjacent tool is heated to a second temperature while the mixture is on the tool. The first temperature is below the solidification temperature of the thermoplastic polymer material and the second temperature is above the solidification temperature. Then, the mixture is exposed to a negative pressure to promote removal of gases from the mixture and put under compressive force to densify the mixture. The thermoplastic polymer material melts and flows. The tool is cooled to the first temperature and removing the mixture to form the near-net thermoplastic composite component having randomly oriented chopped reinforcement material distributed within a thermoplastic polymer matrix.

    REINFORCED PREFORM AND METHOD FOR MOLDING
    38.
    发明申请
    REINFORCED PREFORM AND METHOD FOR MOLDING 有权

    公开(公告)号：US20210101350A1

    公开(公告)日：2021-04-08

    申请号：US16594288

    申请日：2019-10-07

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Venkateshwar R. Aitharaju ,  William R. Rodgers ,  Selina X. Zhao

    IPC: B29C70/46 ,  B33Y80/00 ,  B29C70/54

    Abstract: A reinforced preform includes a sheet of reinforced material having opposed first and second edges, with each edge having a respective first connection point located therealong. The preform also includes first and second tethers, with each tether being attached at a respective first end thereof to a respective one of the first connection points and having a respective second end thereof terminating in at least one of: a respective loop tied at the respective second end, a respective knot tied at the respective second end, a respective graspable member to which the respective second end is connected, and an attachment to a respective second connection point located along a perimeter of the sheet. A method and mold for molding a reinforced preform are also disclosed.

    METHODS FOR FORMING COMPOSITE ARTICLES FROM NON-CRIMP FABRICS
    40.
    发明申请
    METHODS FOR FORMING COMPOSITE ARTICLES FROM NON-CRIMP FABRICS 审中-公开

    公开(公告)号：US20190390379A1

    公开(公告)日：2019-12-26

    申请号：US16018434

    申请日：2018-06-26

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Venkateshwar R. Aitharaju ,  William R. Rodgers

    IPC: D04B21/16 ,  D04H3/004 ,  D04H3/147 ,  D04H3/04 ,  B29C70/20 ,  B29C70/52

    Abstract: Methods for forming composite articles include providing a non-crimp fabric (NCF) comprising a plurality of fiber plies maintained in a layup by stitching, wherein the stitching exhibits a lower structural tolerance to heat and/or UV light relative to the fiber plies, selectively degrading the stitching in one or more areas using heat or UV light, draping the NCF on a contoured article, applying a polymer matrix material to the draped NCF, and curing the polymer matrix material to form a contoured composite article. The stitching can be degraded in regions of the NCF which, when draped on the contoured article, correspond to topological features of the contoured article. Degrading the stitching can comprise breaking the stitching. The fiber plies can comprise carbon fibers, glass fibers, and/or basalt fibers. The contoured article can be tooling and/or an automotive component. The NCF can be a bi-axial NCF.

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