REAL TIME ADDITIVE MANUFACTURING PROCESS INSPECTION

    公开(公告)号:US20200217807A1

    公开(公告)日:2020-07-09

    申请号:US16243606

    申请日:2019-01-09

    Inventor: Morteza Safai

    Abstract: Systems and methods for real time, nondestructive inspection of an object being formed by additive manufacturing is provided. The disclosed systems and methods can be used with any additive manufacturing system and can detect defects introduced during fabrication. In operation, additive manufacturing of the object can be paused and the object rotated within the build chamber. An x-ray pulse can then be directed through a linear aperture towards the object being formed inside the build chamber. A linear x-ray detector array can detect the x-ray pulse and an x-ray image of the object being formed can be created. By rotating the object being formed during exposure to the x-ray pulse at least one half of one full rotation, the entire volume of the object can be inspected.

    System and method for high speed surface and subsurface FOD and defect detection

    公开(公告)号:US10692204B2

    公开(公告)日:2020-06-23

    申请号:US15225440

    申请日:2016-08-01

    Abstract: A system and method for the detection of foreign object debris materials or defects on and/or under a surface of a composite part under manufacture. A member, for example an inspection gantry, is configured to move over the surface. A thermal excitation source is fixed to the member and is configured to direct infrared radiation across the surface. An infrared camera is also fixed to the member a predetermined distance away from the thermal excitation source and is configured to scan the surface as the member moves over the surface to detect and output scan information of the surface. A controller is coupled to the excitation source and to the infrared camera. The controller is configured to process the scan information from the infrared camera to identify a foreign object debris material or defect located on and/or under the surface.

    Synchronized phased array and infrared detector system for moisture detection

    公开(公告)号:US10656081B2

    公开(公告)日:2020-05-19

    申请号:US15787014

    申请日:2017-10-18

    Abstract: A method and system for detecting moisture in a composite sandwich panel for an aerospace vehicle. A pulse of an electromagnetic radiation beam is beam steered to the composite sandwich panel. The pulse of the electromagnetic radiation beam has a number of wavelengths that is absorbed by water molecules. The timing of the pulse of the electromagnetic radiation beam is synchronized to heat the composite sandwich panel with a time window in an infrared detector system to detect an amount of infrared radiation. The amount of infrared radiation in the composite sandwich panel is detected within the time window for the infrared detector system when the composite sandwich panel is heated by the pulse of the electromagnetic radiation beam, wherein the amount of infrared radiation indicates a level of moisture in the composite sandwich panel.

    THERMOELECTRICALLY-COOLED X-RAY SHIELD
    104.
    发明申请

    公开(公告)号:US20200098536A1

    公开(公告)日:2020-03-26

    申请号:US16140278

    申请日:2018-09-24

    Inventor: Morteza Safai

    Abstract: Disclosed herein is a system for x-ray backscatter inspection. The system comprises an interior cavity. The system also comprises a non-conductive fluid contained within the interior cavity. The system additionally comprises a power source within the interior cavity and submerged in the non-conductive fluid. The system further comprises an x-ray cathode within the interior cavity, submerged in the non-conductive fluid, and coupled to the power source. The system also comprises an x-ray anode within the interior cavity, submerged in the non-conductive fluid, and positioned to receive an electron emission from the x-ray cathode to generate an x-ray emission. The system additionally comprises a thermoelectric cooler surrounding the interior cavity and operable to draw heat from the non-conductive fluid.

    Compact Automated Inspection for Foreign Materials During the Manufacture of Large Composite

    公开(公告)号:US20200074614A1

    公开(公告)日:2020-03-05

    申请号:US16117938

    申请日:2018-08-30

    Inventor: Morteza Safai

    Abstract: An example system includes a sensor housing defining a plurality of horizontal layers and a controller. The sensor housing includes a plurality of light-emitted diode (LED) light sources, a plurality of cameras, and a plurality of optical devices. Each camera of the plurality of cameras is positioned within a respective horizontal layer of the plurality of horizontal layers and configured to detect a respective range of wavelengths of light. The plurality of optical devices is configured to receive light reflected by the surface through a common input lens and direct the light to one of the cameras of the plurality of cameras depending on a wavelength of the light. The controller is configured to receive signals from the plurality of cameras indicative of the light reflected by the surface and determine whether there is any foreign object debris material on the surface using the signals from the plurality of cameras.

    Laser for Laser Bond Inspection System and Laser Ultrasonic Inspection System

    公开(公告)号:US20200049665A1

    公开(公告)日:2020-02-13

    申请号:US16102575

    申请日:2018-08-13

    Inventor: Morteza Safai

    Abstract: An example laser system includes a laser, a plurality of pulse stretchers coupled together in series, a pulse amplifier, a feedback module, and a lens assembly. The plurality of pulse stretchers is configured to stretch pulse widths of the laser pulses and output stretched laser pulses. The pulse amplifier is positioned between a first pulse stretcher and a second pulse stretch of the plurality of pulse stretchers, and is configured to amplify the laser pulses. The feedback module includes a pulse delay comparator configured to compare a first laser pulse of the laser pulses to a corresponding first stretched laser pulse of the stretched laser pulses. The feedback module also includes a computing device configured to determine an adjustment to a pulse stretcher of the plurality of pulse stretchers, and apply the adjustment to the pulse stretcher so as to modify a shape of a second stretched laser pulse.

    ANISOTROPIC PIEZOELECTRIC DEVICE, SYSTEM, AND METHOD

    公开(公告)号:US20200006623A1

    公开(公告)日:2020-01-02

    申请号:US16567286

    申请日:2019-09-11

    Abstract: A micro electromechanical (mem) device includes a first electrode, a second electrode, and a shaped carbon nanotube with a first end and a second end. The first end of the shaped carbon nanotube is conductively connected to the first electrode and the second end is conductively connected to the second electrode. A system for making the device includes a plurality of electrodes placed outside the growth region of a furnace to produce a controlled, time-varying electric field. A controller for the system is connected to a power supply to deliver controlled voltages to the electrodes to produce the electric field. A mixture of gases is passed through the furnace with the temperature raised to cause chemical vapor deposition (CVD) of carbon on a catalyst. The sequentially time-varying electric field parameterizes a growing nanotube into a predetermined shape.

    Moisture detection system
    108.
    发明授权

    公开(公告)号:US10422742B2

    公开(公告)日:2019-09-24

    申请号:US15787201

    申请日:2017-10-18

    Abstract: A method and system for an aerospace vehicle. A pulse of electromagnetic radiation is transmitted into the composite sandwich panel such that the composite sandwich panel is heated above an ambient temperature. An amount of infrared radiation generated in the composite sandwich panel is detected in response to transmitting the pulse of electromagnetic radiation into the composite sandwich panel using a time window selected to detect the amount of infrared radiation when the pulse of electromagnetic radiation heats the composite sandwich panel. The amount of infrared radiation detected indicates a level of moisture in the composite sandwich panel.

    SYSTEM AND METHOD FOR HIGH SPEED FOD DETECTION
    109.
    发明申请

    公开(公告)号:US20190262874A1

    公开(公告)日:2019-08-29

    申请号:US16411320

    申请日:2019-05-14

    Abstract: A system for the detection of foreign object debris material on a surface includes an ultraviolet light source configured to direct ultraviolet light across a surface. The surface is an outer surface of a composite part being formed by a composite layup machine. The system includes an ultraviolet light camera configured to scan the surface and output a first signal proportional to reflected ultraviolet light reflected by at least one of the surface and a first type of foreign object debris material. The reflected ultraviolet light is responsive to the ultraviolet light from the ultraviolet light source. The system also includes a controller coupled to the ultraviolet light source and to the ultraviolet light camera. The controller is configured to compare the first signal from the ultraviolet light camera with a first threshold to detect presence of the first type of foreign object debris material.

    VACUUM BAG HAVING INTEGRAL ULTRASONIC TRANSDUCERS

    公开(公告)号:US20190257797A1

    公开(公告)日:2019-08-22

    申请号:US15899337

    申请日:2018-02-19

    Abstract: Systems and methods are provided for enhanced vacuum bags. One embodiment is a method that includes placing a laminate comprising uncured fiber reinforced polymer onto a mandrel, laying up a vacuum bag, which includes integral ultrasonic transducers within a gas-impermeable layer, atop the laminate, and sealing the vacuum bag to the mandrel. The method also includes drawing a vacuum on the laminate via the vacuum bag, removing gas between the integral ultrasonic transducers and the laminate, and interrogating the laminate with the integral ultrasonic transducers.

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