Abstract: An additive manufacturing system may include a powder delivery device configured to direct a powder stream toward a build surface of a component, and a powder flow monitoring system. The powder delivery device defines a longitudinal axis oriented toward the build surface. The powder flow monitoring system includes an illumination device configured to illuminate at least some powder the powder stream between the powder delivery device and the build surface; and an imaging device configured to image the illuminated powder at an image plane that intersects the longitudinal axis. The illumination device and the imaging device may be registered to the powder delivery device in a plane substantially orthogonal to the longitudinal axis.

Abstract: A system may include one or more computing devices configured to receive image data representing illuminated powder of a powder stream between a powder delivery device of an additive manufacturing system and a build surface of a component; determine at least one metric associated with the powder stream based on the received image data; determine whether the at least one metric indicates an abnormal state of the at least one metric; and cause the additive manufacturing system to perform at least one action in response to determining that the at least one metric indicates the abnormal state.

Abstract: An additive manufacturing system may include an energy delivery device configured to deliver energy to a component to form a melt pool at least partially surrounded by a cooling region; and an optical system comprising: an imaging device; and an occulting device, wherein the occulting device is configured to occult at least part of thermal emissions produced by the energy and the melt pool and transmit at least some thermal emissions produced by the cooling region.

Abstract: A powder flow monitoring system may include a computing device configured to receive image data representing illuminated powder of a powder stream between a powder delivery device and a build surface of a component, generate a representation of the powder stream based on the image data, and output the representation of the powder stream for display at a display device.

Abstract: A method may include controlling, by a computing device, an energy source to form a melt pool at a build surface; and controlling, by the computing device, a material delivery device to direct a powder at the melt pool to form the seal fin comprising a metal matrix composite on the build surface, wherein the metal matrix composite comprises a matrix material and a reinforcement phase.

Abstract: A powder flow monitoring system may include a computing device configured to receive image data representing illuminated powder of a powder stream between a powder delivery device and a build surface of a component, generate a representation of the powder stream based on the image data, and output the representation of the powder stream for display at a display device.

Abstract: In some examples, a system including a fluid stream monitoring system. The monitoring system includes an illumination device configured to illuminate at least some of particles suspended in a fluid stream; and an imaging device configured to image the illuminated particles at a first image plane that intersects a longitudinal axis of the fluid stream, wherein the illumination device and the imaging device are registered to the fluid stream delivery device in the first image plane, where the first image plane is substantially orthogonal to the longitudinal axis. The system includes processing circuitry configured to determine one or more physical characteristics of the fluid particles.

Abstract: In some examples, a system including a fluid stream monitoring system. The monitoring system includes an illumination device configured to illuminate at least some of particles suspended in a fluid stream; and an imaging device configured to image the illuminated particles at a first image plane that intersects a longitudinal axis of the fluid stream, wherein the illumination device and the imaging device are registered to the fluid stream delivery device in the first image plane, where the first image plane is substantially orthogonal to the longitudinal axis. The system includes processing circuitry configured to determine one or more physical characteristics of the fluid particles.

Abstract: An additive manufacturing system may include a powder delivery device configured to direct a powder stream toward a build surface of a component, and a powder flow monitoring system. The powder delivery device defines a longitudinal axis oriented toward the build surface. The powder flow monitoring system includes an illumination device configured to illuminate at least some powder the powder stream between the powder delivery device and the build surface; and an imaging device configured to image the illuminated powder at an image plane that intersects the longitudinal axis. The illumination device and the imaging device may be registered to the powder delivery device in a plane substantially orthogonal to the longitudinal axis.

Abstract: A powder flow monitoring system may include a computing device configured to receive image data representing illuminated powder of a powder stream between a powder delivery device and a build surface of a component, generate a representation of the powder stream based on the image data, and output the representation of the powder stream for display at a display device.

Abstract: A system may include one or more computing devices configured to receive image data representing illuminated powder of a powder stream between a powder delivery device of an additive manufacturing system and a build surface of a component; determine at least one metric associated with the powder stream based on the received image data; determine whether the at least one metric indicates an abnormal state of the at least one metric; and cause the additive manufacturing system to perform at least one action in response to determining that the at least one metric indicates the abnormal state.

Abstract: An additive manufacturing system may include an energy delivery device configured to deliver energy to a component to form a melt pool at least partially surrounded by a cooling region; and an optical system comprising: an imaging device; and an occulting device, wherein the occulting device is configured to occult at least part of thermal emissions produced by the energy and the melt pool and transmit at least some thermal emissions produced by the cooling region.

Abstract: A method may include controlling, by a computing device, an energy source to form a melt pool at a build surface; and controlling, by the computing device, a material delivery device to direct a powder at the melt pool to form the seal fin comprising a metal matrix composite on the build surface, wherein the metal matrix composite comprises a matrix material and a reinforcement phase.

Abstract: A method of positioning lumber in a given orientation in a handling apparatus having a base frame, a longitudinal transport assembly, and at least two gripper arm support platforms with a pair of gripper arms positioned on each of the support platforms. A work piece is gripped with the gripper arms without the work piece engaging the longitudinal transport assembly. The gripper arms are adjusted on at least one of the support platforms in a direction generally perpendicular to the longitudinal transport assembly in order to selectively position the work piece. The work piece is then brought into engagement with the transport assembly and the gripper arms are released from the work piece.