公开(公告)号：US20210229327A1

公开(公告)日：2021-07-29

申请号：US16773516

申请日：2020-01-27

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Venkateshwar R. AITHARAJU ,  William R. RODGERS ,  Selina X. ZHAO ,  Terrence WATHEN

IPC分类号： B29C45/14 ,  B29C31/00 ,  B29C33/16 ,  B29C33/32 ,  H01F1/04

摘要： A method of manufacturing a composite component according to various aspects of the present disclosure includes disposing a fiber preform in a mold. The fiber preform includes a first portion having a first edge and a second portion having a second edge. The first edge and the second edge cooperate to at least partially define a gap. One of the first portion or the second portion includes a first ferromagnetic material and the other of the first portion or the second portion includes a first magnetic or magnetizable component. The method further includes closing the gap by generating a magnetic field from the first magnetic or magnetizable component. The method further includes injecting a polymer precursor into the mold. The method further includes forming the composite component by solidifying the polymer precursor to form a polymer. The composite component includes the fiber preform and the polymer.

公开(公告)号：US20210060882A1

公开(公告)日：2021-03-04

申请号：US16555762

申请日：2019-08-29

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Bhavesh SHAH ,  William R. RODGERS ,  Mark A. VOSS ,  Terrence WATHEN

IPC分类号： B29D28/00 ,  B29C70/30 ,  B29C35/16 ,  B29C35/02 ,  B29C70/34

摘要： 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.

公开(公告)号：US20190263342A1

公开(公告)日：2019-08-29

申请号：US15907036

申请日：2018-02-27

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  CONTINENTAL STRUCTURAL PLASTICS, INC.

发明人： William R. RODGERS ,  Venkateshwar R. AITHARAJU ,  Terrence WATHEN ,  Yutaka YAGI

IPC分类号： B60R19/18

摘要： An energy-absorbing assembly includes a housing and a plurality of discrete energy-absorbing elements. The housing includes a first wall and a second wall. The first wall and the second wall are spaced apart from one another to at least partially define an interior compartment. Each element of the plurality of energy-absorbing elements includes a polymer and a plurality of reinforcing fibers. The plurality of energy-absorbing elements is at least partially disposed within the interior compartment and fixed to the housing. Each energy-absorbing element of the plurality of energy-absorbing elements includes an elongated hollow structure extending between a first end and a second end. Each elongated hollow structure defines a longitudinal axis extending nonparallel to at least one of the first wall and the second wall. In various alternative aspects, each energy-absorbing element may include a transverse wall.