About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Special Session
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Presentation Title |
Development of a Laser Hot Wire Additive Manufacturing Process |
Author(s) |
Elizabeth Chang-Davidson, Brandon Abranovic, Jack Beuth |
On-Site Speaker (Planned) |
Brandon Abranovic |
Abstract Scope |
This work focuses on parameter development for a large-scale laser hot wire process, consisting of a moving melt pool formed by a laser source and a heated wire fed into the melt pool. Parameter development for a large-scale hot wire feed additive manufacturing process was carried out with the use of semi-analytical welding models and finite element analysis. Initial work consisted of mapping key melt pool dimensions from single bead geometries across process space, then proceeded to stacking single beads into thin walls. Semi-analytical modeling was used to correct flaws in these walls, including selecting interlayer dwell times. Simulation of thin walls was undertaken via a custom FEA model utilizing element birth and death, resulting in temperature histories used for microstructure prediction. Finally, parameter development was extended to complex geometries such pads, cubes, thin walled T junctions, and curved surfaces. The work culminated in the fabrication of a specialized component. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |