Abstract: In situ defect detection of additively-manufactured articles using graph neural networks are provided. One aspect includes a computing device comprising processing circuitry and memory storing instructions that, when executed by the processing circuitry, causes the processing circuitry to store a graph comprising a plurality of light intensity values measured in situ during an additive manufacturing process and to generate an output describing a predicted defect in the graph using a graph neural network, wherein the graph neural network has been trained using labeled training data generated by a process comprising storing a training graph comprising a plurality of training light intensity values measured in situ during a training additive manufacturing process of the training article, determining one or more defect locations of the training article, determining a plurality of training sub-graphs from the training graph, and pairing a training sub-graph with defect information.

Abstract: An approach for characterizing laser light emitted from a high-powered laser is disclosed. In one example, the approach is employed by a tool that includes an array of thermopiles and a computing system. The array of thermopiles is configured to receive laser light emitted from the high-powered laser. Each thermopile has a fixed spatial location relative to each other thermopile within the array of thermopiles. Each thermopile is configured to output an energy flux value of the laser light incident on the thermopile. The computing system is configured to receive a set of energy flux values from the array of thermopiles based at least on the laser light emitted by the high-powered laser being incident on the array of thermopiles and output a characterization of the laser light emitted by the high-powered laser based at least on the set energy flux values received from the array of thermopiles.

Abstract: A calibration tool for a beam profiler is disclosed. The calibration tool includes an integrating sphere configured to receive laser light emitted from a laser and generate diffuse laser light. A sensor system is configured to output an expected intensity value of the diffuse laser light. An interface is configured to align a beam profiler with the integrating sphere to direct the diffuse laser light to be incident on an array of pixels of a beam sensor of the beam profiler. The array of pixels of the beam sensor is configured to output a plurality of native intensity values of the diffuse laser light. A computing system is configured to calibrate the beam profiler based at least on differences between the plurality of native intensity values of the diffuse laser light and the expected intensity value of the diffuse laser light.

Abstract: In one embodiment a deep submersible light includes a substantially spherical exterior housing made of metal, the housing having a hollow interior and a first aperture extending through a front side of the housing. The first aperture may communicate with the hollow interior of the housing and an LED may be mounted inside the first aperture adjacent to the hollow interior of the housing. A transparent window may extend across the first aperture, and a seal may be situated between a periphery of the window and the housing adjacent the first aperture for providing resistance to the entry of water into the hollow interior of the housing. An electrical connector may be disposed on an aft section of the housing and may be configured to be readily field serviceable. The light may further include an internal water barrier between a connector wiring area and an inner driver element of the lighting element.

Abstract: In one embodiment a deep submersible light includes a substantially spherical exterior housing made of metal, the housing having a hollow interior and a first aperture extending through a front side of the housing. The first aperture may communicate with the hollow interior of the housing and an LED may be mounted inside the first aperture adjacent to the hollow interior of the housing. A transparent window may extend across the first aperture, and a seal may be situated between a periphery of the window and the housing adjacent the first aperture for providing resistance to the entry of water into the hollow interior of the housing. An electrical connector may be disposed on an aft section of the housing and may be configured to be readily field serviceable. The light may further include an internal water barrier between a connector wiring area and an inner driver element of the lighting element.

Abstract: Pipe inspection and pressurized fluid cleaning systems, methods, and apparatus are disclosed. A jetter push-cable device may include a high-pressure hydraulic hose core with a helical surround of small-diameter flexible rods and/or conductors, wrapped in such a way as to provide a cable of low bend-radius for use in small-diameter pipe inspections and cleaning. Conductors may be included in the push-cable. End-effectors, such as jetter nozzles and cutters may be coupled to the push-cable. An annular camera assembly, which may include lighting elements, may be further included in the push-cable device.

Abstract: Camera heads configured to provide digitally articulated images or video, at adjustable resolutions and/or offsets and orientations, to a camera control unit (CCU) or other electronic computing system for display, storage, and/or transmission to other systems are disclosed.

Abstract: Camera heads having multiple image sensors, configured to provide digitally articulated images or video, at adjustable resolutions and/or offsets and orientations, to a camera control unit (CCU) or other electronic computing system for display, storage, and/or transmission to other systems are disclosed.

Abstract: High-bandwidth push cables configured for high speed data communication, such as that used in video signal transmission between a camera head and a cable reel or other device, are disclosed.

Abstract: Camera heads configured to provide digitally articulated images or video, at adjustable resolutions and/or offsets and orientations, to a camera control unit (CCU) or other electronic computing system for display, storage, and/or transmission to other systems are disclosed.

Abstract: In a variable displacement type hydraulic pump/motor assembly including at least one internally movable component, such as a yoke, a swashplate, and the means for moving the swashplate, the improvement includes imparting on this component absolute location indicia markings and the addition of an optical/electronic sensor unit capable of reading such indicia markings fixedly located on a housing of the pump/motor assembly and including an optical read head extending into the housing interior and located at a spaced distance from the indicia markings for reading same, relative to a reference location, and producing a signal indicative of the absolute position of the movable component. The signal can then, in turn, be used for controlling the displacement of the pump/motor assembly. A method for determining the absolute component position is also set forth.

Abstract: Disclosed is a system and method for measuring the position of at least one field producing element (e.g., a magnet) without a direct electrical or physical connection between the field producing element and the sensor(s). In one embodiment, the output from an array of sensors (e.g., Hall Effect sensors) is curve fit using an algorithm having a characteristic bell curve (e.g., curve fit tracking algorithm, center of gravity algorithm, etc.) to determine at least one of an absolute or relative position associated with the field producing element and/or a property associated with the field producing element (e.g., magnetic flux). Another embodiment is directed to detecting errors in one or more of the sensors and excluding the output of the faulty sensors in determining the position associated with the field producing element.

Abstract: A guide for a video pipe inspection system that includes a camera head and a tubular coil spring having a central axis. A guide member with radially extending fins is configured to surround the tubular spring. At least one pin is removably engageable with the guide member and the tubular coil spring to retain the guide member in position with respect to the tubular coil spring. The straight segments of a pair of opposing U-shaped pins can be inserted into grooves in the guide member so that they extend between adjacent coils of the tubular coil spring. In alternate form, the guide member may include an inner capture ring assembly that receives the pins. An outer yoke assembly surrounds, and is freely rotatable about, the inner capture ring assembly and includes a pair of axles for rotatably supporting a pair of wheels that engage an interior wall of the pipe.

Abstract: A guide for a video pipe inspection system that includes a camera head and a tubular coil spring having a central axis. A guide member with radially extending fins is configured to surround the tubular spring. At least one pin is removably engageable with the guide member and the tubular coil spring to retain the guide member in position with respect to the tubular coil spring. The straight segments of a pair of opposing U-shaped pins can be inserted into grooves in the guide member so that they extend between adjacent coils of the tubular coil spring. In alternate form, the guide member may include an inner capture ring assembly that receives the pins. An outer yoke assembly surrounds, and is freely rotatable about, the inner capture ring assembly and includes a pair of axles for rotatably supporting a pair of wheels that engage an interior wall of the pipe.

Abstract: A fiber optic signal collection system and method for position sensing or sensing other parameters indicated by light distinctive patterns. The system is particularly suitable for use in aircraft flight control. The system includes a set of fiber optic fibers with first and second ends. The first ends are disposed adjacent a light distinctive pattern indicating a particular pattern such as a relative position. A portion of the second ends are positioned adjacent a light source and a portion of the second ends are disposed adjacent a light sensing electrical device such that light from the light source can be conveyed through the fibers, reflected from the light distinctive pattern, and conveyed through the fibers to the light sensing electrical device in order to detect the pattern in the electrical device.

Abstract: A fiber optic signal collection system and method for position sensing or sensing other parameters indicated by light distinctive patterns. The system is particularly suitable for use in aircraft flight control. The system includes a set of fiber optic fibers with first and second ends. The first ends are disposed adjacent a light distinctive pattern indicating a particular pattern such as a relative position. A portion of the second ends are positioned adjacent a light source and a portion of the second ends are disposed adjacent a light sensing electrical device such that light from the light source can be conveyed through the fibers, reflected from the light distinctive pattern, and conveyed through the fibers to the light sensing electrical device in order to detect the pattern in the electrical device.