Abstract: A method of fabricating a high-temperature composite structure is disclosed. The method may include in situ interlacing a composition-coated reinforcement in a predefined pattern to form a plurality of shingles stacked adjacent each other. The method may also include hardening the composition in the composition-coated reinforcement.

Abstract: A system is disclosed for additively manufacturing a structure. The system may have a support, and a print head operatively connected to and moveable by the support. The print head may include a first module configured to discharge a material, a second module configured to compact the material as it discharges from the first module, and a controller in communication with the second module. The controller may be configured to determine an as-discharged characteristic of the material, and to selectively adjust a force of the second module based on the as-discharged characteristic.

Abstract: A method is disclosed of additively manufacturing an object. The method may include discharging a material from a supply through an outlet of a print head onto an underlying layer to form the object. The method may also include moving the print head with a support during the discharging, and selectively twisting the material about a longitudinal axis of the material.

Abstract: Methods and associated systems and apparatus are disclosed for determining a tool path for use in additively manufacturing a structure. The methods may include identifying a propagation surface onto which material forming at least part of the structure is to be deposited, and determining a structure boundary associated with the propagation surface and defining at least part of the structure. The methods may also include determining one or more structure layers offset from the propagation surface and laterally bounded by the structure boundary; generating a tool path for each structure layer.

Abstract: An additive manufacturing system is disclosed. The additive manufacturing system may include a support, and a print head operatively connected to and moveable by the support. The print head may include an outlet configured to discharge a material, and a compaction module configured to compact the material. The additive manufacturing system may also include a controller configured to selectively adjust a pressure applied by the compaction module on the material independent of movement of the print head caused by the support.

Abstract: Methods and associated systems and apparatus for determining a tool path for use in additively manufacturing a structure. The methods may include receiving data that at least partially defines an outer boundary for a region of the structure, partitioning the region based on placement of a partitioning line across the region from the outer boundary, and generating the tool path to navigate at least part of the outer boundary and to cross, at least partially, the region based on the placement of the partitioning line.

Abstract: A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

Abstract: A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

Abstract: Methods and associated systems and apparatus for determining a tool path for use in additively manufacturing a structure. The methods may include receiving placement data indicative of a relative placement of a plurality of nodes, each node including one or more regional tool paths and each regional tool path for additively manufacturing a region of the structure. The methods may also include receiving operation data indicative of an operation to be performed in relation to at least one of the plurality of nodes, and resolving the at least one of the plurality of nodes into a resolved tool path for use in additively manufacturing the structure based on the received placement data and operation data.

Abstract: A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

Abstract: A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

Abstract: A system is disclosed for use in additively manufacturing a structure. The system may include an additive manufacturing machine, a memory having computer-executable instructions stored thereon, and a processor. The processor may be configured to execute the computer-executable instructions to cause the additive manufacturing machine to discharge a path of composite material, including a continuous fiber and a matrix at least partially coating the continuous fiber. The processor may also be configured to execute the computer-executable instructions to monitor an energy level within the continuous fiber during discharging, to make a determination that the continuous fiber has lost continuity based on a reduction in the energy level, and to selectively interrupt the discharging based on the determination.

Abstract: A system is disclosed for additively manufacturing a composite structure. The system may include a support, and a print head operatively connected to and moveable by the support. The print head may include a first supply configured to hold a liquid matrix, a second supply configured to hold a continuous reinforcement, and a wetting module configured to separately receive the liquid matrix and the continuous reinforcement from the first and second supplies, respectively, and to discharge a composite material including the continuous reinforcement wetted with the liquid matrix. The wetting module may include a body forming an internal chamber having an upstream open end and a downstream open end, an entrant nozzle disposed within the upstream open end and configured to receive the continuous reinforcement, and an exit nozzle disposed within the downstream closed end and configured to discharge the composite material.

Abstract: Methods and associated systems and apparatus for determining a tool path for use in additively manufacturing a structure. The methods may include receiving placement data indicative of a relative placement of a plurality of nodes, each node including one or more regional tool paths and each regional tool path for additively manufacturing a region of the structure. The methods may also include receiving operation data indicative of an operation to be performed in relation to at least one of the plurality of nodes, and resolving the at least one of the plurality of nodes into a resolved tool path for use in additively manufacturing the structure based on the received placement data and operation data.

Abstract: A system is disclosed for additively manufacturing a composite structure. The system may include a support, and a print head operatively connected to and moveable by the support. The print head may include an outlet configured to discharge a material in a trajectory along a central axis of the outlet, and a compactor disposed downstream of the outlet relative to the trajectory and configured to press the material transversely against an adjacent surface. The outlet may be configured to translate relative to the compacting module.

Abstract: Methods and associated systems and apparatus are disclosed for determining a tool path for use in additively manufacturing a structure. The methods may include receiving data that at least partially defines a plurality of intersecting elongate elements forming a layer of the structure, and determining, based on the received data, a graph structure comprising a plurality of edges each representing one of the plurality of intersecting elongate elements, and a node representing an intersection of at least two of the plurality of intersecting elongate elements. The method may also include determining a plurality of regions of the structure based on the graph structure, each region comprising one or more elongate elements, and generating a plurality of tool paths for each of the plurality of regions.

Abstract: A method and apparatus for the additive manufacturing of three-dimensional objects are disclosed. Two or more materials are extruded simultaneously as a composite, with at least one material in liquid form and at least one material in a solid continuous strand completely encased within the liquid material. A means of curing the liquid material after extrusion hardens the composite. A part is constructed using a series of extruded composite paths. The strand material within the composite contains specific chemical, mechanical, or electrical characteristics that instill the object with enhanced capabilities not possible with only one material.

Abstract: A method is disclosed for additively manufacturing an object. The method may include extending a first module of a print head to push a tag end of material adjacent a second module during a feeding routine. The method may also include extending the second module to push against the tag end, and activating a third module to at least partially cure the tag end and thereby adhere the tag end as an anchor.

Abstract: A method is disclosed for additively manufacturing a composite structure. The method may include receiving from a user a sketch of a cross-section of the composite structure and a desired height. The method may also include automatically generating a virtual model of the composite structure having a plurality of layers, each with a thickness related to the height. The method may further include receiving from the user at least one infill pattern for at least one of the plurality of layers, and causing an additive manufacturing machine to deposit a continuous fiber along segments of the at least one infill pattern.

Abstract: A system is disclosed for additively manufacturing a composite structure. The system may include a support, a discharge head connected to and moveable by the support, a supply of reinforcement, and a rotary tensioner located between the supply and the discharge head. The rotary tensioner may be configured to impart tension to the reinforcement and to generate a signal indicative of the tension. The system may further include a drive associated with the supply, and a controller in communication with the rotary tensioner and the drive. The controller may be configured to selectively adjust a feed parameter of the drive based on the signal to maintain a desired level of tension.