SUMMARY

Wire Arc Additive Manufacturing (WAAM) is becoming a popular variant of additive manufacturing as it allows for the quick and economical production of large-scale parts. WAAM process parameters such as torch travel speed, wire feed speed, and the ratio between them have been studied extensively. The effects of these parameters on the bead geometry, microstructure, and mechanical properties have been evaluated for many materials to increase the process’ ability to create near-net-shape features. A deficit of linear WAAM deposition strategies is the lack of geometry control within a particular set of working parameters. This is usually solved by overlapping multiple beads to achieve desired dimensions. However, a structure built with a multi-bead overlap model cannot achieve geometries that require a non-integer number of overlapping beads. Weave path strategies have been applied as a solution to this as well as providing better top surface roughness and production time. The purpose of this study is to investigate the effects that wavelength, amplitude, and torch travel speed of a triangular weave path have on bead geometry. The study consists of determining the weld penetration of single layer depositions as well as characterizing the surface texture of multi-layer walls. The results from this study will provide a range of parameters to optimize the geometry of WAAM structures.