Patents by Inventor Venkateshwar R. Aitharaju

Venkateshwar R. Aitharaju has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200238637
    Abstract: Presented are manufacturing control systems for fabricating composite-material structures, methods for making/operating such systems, and resin transfer molding techniques for ameliorating race-tracking effects in fiber-reinforced polymer panels. A method for forming a composite-material construction includes confirming, via a system electronic control unit (ECU), that a fiber-based preform is placed in a mold cavity and that opposing mold segments of the molding apparatus are sealed together. A filler, such as a compressible bladder, a cluster of spring-biased pins, or a spray-chopped fiber bed, is introduced into a void between the fiber-based preform and a tool face of one mold segment to thereby eliminate an unwanted resin race track. The system ECU commands a resin pump to inject resin through a primary gate of the molding apparatus and into the mold cavity to thereby impregnate the fiber-based preform with the resin. One or more vents operate to evacuate air from the mold.
    Type: Application
    Filed: January 25, 2019
    Publication date: July 30, 2020
    Applicant: GM Global Technology Operations LLC
    Inventors: William R. Rodgers, Venkateshwar R. Aitharaju
  • Patent number: 10723271
    Abstract: A running board configured for absorbing energy includes an attachment portion extending along a longitudinal axis and a step-assist portion extending from the attachment portion along a latitudinal axis that is perpendicular to the longitudinal axis. The attachment portion defines a plurality of voids therein each disposed along a respective one of a plurality of horizontal axes that are perpendicular to the longitudinal axis. The running board further includes a plurality of tubes disposed within a respective one of the plurality of voids. A device including the running board and a method of forming a running board are also set forth.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: July 28, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Venkateshwar R. Aitharaju, Hamid G. Kia
  • Patent number: 10717244
    Abstract: Presented are manufacturing control systems for composite-material structures, methods for assembling/operating such systems, and transfer molding techniques for predicting and ameliorating void conditions in fiber-reinforced polymer panels. A method for forming a composite-material construction includes receiving a start signal indicating a fiber-based preform is inside a mold cavity, and transmitting a command signal to inject pressurized resin into the mold to induce resin flow within the mold cavity and impregnate the fiber-based preform. An electronic controller receives, from a distributed array of sensors attached to the mold, signals indicative of pressure and/or temperature at discrete locations on an interior face of the mold cavity. The controller determines a measurement deviation between a calibrated baseline value and the pressure and/or temperature values for each of the discrete locations.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: July 21, 2020
    Assignees: GM Global Technology Operations LLC, University of Southern California
    Inventors: Roger G. Ghanem, Venkateshwar R. Aitharaju, Hamid G. Kia
  • Publication number: 20200148121
    Abstract: A running board configured for absorbing energy includes an attachment portion extending along a longitudinal axis and a step-assist portion extending from the attachment portion along a latitudinal axis that is perpendicular to the longitudinal axis. The attachment portion defines a plurality of voids therein each disposed along a respective one of a plurality of horizontal axes that are perpendicular to the longitudinal axis. The running board further includes a plurality of tubes disposed within a respective one of the plurality of voids. A device including the running board and a method of forming a running board are also set forth.
    Type: Application
    Filed: November 9, 2018
    Publication date: May 14, 2020
    Applicant: GM Global Technology Operations LLC
    Inventors: Venkateshwar R. Aitharaju, Hamid G. Kia
  • Publication number: 20190390379
    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.
    Type: Application
    Filed: June 26, 2018
    Publication date: December 26, 2019
    Inventors: Venkateshwar R. Aitharaju, William R. Rodgers
  • Patent number: 10500765
    Abstract: A die face monitoring system may include an upper die having an upper die face and an upper die opening extending towards the upper die face. Similarly, a lower die may include a lower die face and a lower die opening extending towards the lower die face. The lower die face is arranged to confront the upper die face and form a concavity therebetween. Furthermore, a plurality of sensors are mounted on a press, with each sensor corresponding to each one of the upper and lower die openings. Each sensor emits a beam of light towards and receives a reflection from a target surface within the upper and lower die openings in order to calculate a distance thereto.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: December 10, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkateshwar R Aitharaju, Nicholas W Pinto, IV
  • Publication number: 20190345616
    Abstract: A method monitoring a corrosion of a device includes conveying an electrical current through a monitoring component. The monitoring component includes a replaceable consumable electrode embedded in an electrolyte and disposed onboard and in electrical communication with the device. The electrode is configured to degrade before the device corrodes. The monitoring component includes a sensor disposed in electrical communication with the replaceable consumable electrode and the device. The sensor is configured for detecting a degradation of the electrode. After conveying, the method includes sending a first signal from the sensor to a storage medium. After sending the first signal, the method includes sending a second signal from the storage medium to a communication device to thereby monitor the corrosion. A monitoring system and a method of monitoring a corrosion of a plurality of joints of the device are also described.
    Type: Application
    Filed: May 14, 2018
    Publication date: November 14, 2019
    Applicant: GM Global Technology Operations LLC
    Inventors: Surender Maddela, Hua-Tzu Fan, Azeem Sarwar, Andrew C. Bobel, Jason Prince, Hongliang Wang, Venkateshwar R. Aitharaju
  • Publication number: 20190308669
    Abstract: An underbody assembly for a vehicle includes a plurality of polymer-fiber composite components. The polymer-fiber composite components include a base and a first reinforcement. The base includes a first side and a second side. The base is configured to extend in a longitudinal direction between a front of the vehicle and a rear of the vehicle. The first reinforcement is coupled to the base. The first reinforcement includes a first elongated ridge and a first elongated trough. The first elongated trough is disposed adjacent to the first elongated ridge. The first elongated ridge and the first elongated trough each extend transversely between the first side of the base and the second side of the base. In various aspects, the underbody assembly consists essentially of the polymer-fiber composite components.
    Type: Application
    Filed: April 6, 2018
    Publication date: October 10, 2019
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, CONTINENTAL STRUCTURAL PLASTICS, INC
    Inventors: Venkateshwar R. AITHARAJU, Satvir AASHAT, William R. RODGERS, Teresa U. HOLINESS-STALLING, Marc-Philippe TOITGANS, Adam BURLEY
  • Publication number: 20190263342
    Abstract: 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.
    Type: Application
    Filed: February 27, 2018
    Publication date: August 29, 2019
    Inventors: William R. RODGERS, Venkateshwar R. AITHARAJU, Terrence WATHEN, Yutaka YAGI
  • Publication number: 20190255787
    Abstract: Presented are manufacturing control systems for composite-material structures, methods for assembling/operating such systems, and transfer molding techniques for predicting and ameliorating void conditions in fiber-reinforced polymer panels. A method for forming a composite-material construction includes receiving a start signal indicating a fiber-based preform is inside a mold cavity, and transmitting a command signal to inject pressurized resin into the mold to induce resin flow within the mold cavity and impregnate the fiber-based preform. An electronic controller receives, from a distributed array of sensors attached to the mold, signals indicative of pressure and/or temperature at discrete locations on an interior face of the mold cavity. The controller determines a measurement deviation between a calibrated baseline value and the pressure and/or temperature values for each of the discrete locations.
    Type: Application
    Filed: February 20, 2018
    Publication date: August 22, 2019
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, University of Southern California
    Inventors: Roger G. Ghanem, Venkateshwar R. Aitharaju, Hamid G. Kia
  • Patent number: 10293770
    Abstract: Provided is a load-carrying or non-load carrying structural component for a vehicle having improved impact resistance, such as a gas tank protection shield, an underbody shield, a structural panel, an interior floor, a floor pan, a roof, an exterior surface, a storage area, a glove box, a console box, a trunk, a trunk floor, a truck bed, and combinations thereof. The component has a support structure with ridges, each spaced apart from one another at predetermined intervals, to form a corrugated surface capable of load-carrying. The ridges are longitudinally extending, raised ridges. The corrugated designs provide support structures that are impact resistant.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: May 21, 2019
    Assignees: GM Global Technology Operations LLC, Teijin Limited
    Inventors: John N. Owens, Mark A. Voss, Bhavesh Shah, Venkateshwar R. Aitharaju, Chris James Tadeusz Wisniewski, Yutaka Yagi, Tsukasa Arai
  • Patent number: 10144376
    Abstract: A crush assembly for a vehicle is provided. The crush assembly includes a fiber-reinforced composite crush member and a cap assembly. The cap assembly is disposed on a terminal end of the crush member. The cap assembly includes an outer cap and an inner cap. The outer cap has a first base, a first side wall extending from the first base, and an interior portion formed by the first base and the first side wall. The inner cap includes a second base and a second side wall extending from the second base. The inner cap is nested at least partially within the interior portion.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 4, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkateshwar R. Aitharaju, Hamid G. Kia, Satvir Aashat
  • Publication number: 20180169975
    Abstract: A die face monitoring system may include an upper die having an upper die face and an upper die opening extending towards the upper die face. Similarly, a lower die may include a lower die face and a lower die opening extending towards the lower die face. The lower die face is arranged to confront the upper die face and form a concavity therebetween. Furthermore, a plurality of sensors are mounted on a press, with each sensor corresponding to each one of the upper and lower die openings. Each sensor emits a beam of light towards and receives a reflection from a target surface within the upper and lower die openings in order to calculate a distance thereto.
    Type: Application
    Filed: December 19, 2016
    Publication date: June 21, 2018
    Inventors: Venkateshwar R. Aitharaju, Nicholas W. Pinto, IV
  • Publication number: 20180162303
    Abstract: A crush assembly for a vehicle is provided. The crush assembly includes a fiber-reinforced composite crush member and a cap assembly. The cap assembly is disposed on a terminal end of the crush member. The cap assembly includes an outer cap and an inner cap. The outer cap has a first base, a first side wall extending from the first base, and an interior portion formed by the first base and the first side wall. The inner cap includes a second base and a second side wall extending from the second base. The inner cap is nested at least partially within the interior portion.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 14, 2018
    Applicant: GM Global Technology Operations LLC
    Inventors: Venkateshwar R. Aitharaju, Hamid G. Kia, Satvir Aashat