|About this Abstract
||2nd International Conference on Technological Innovations in Metals Engineering (TIME)
||Technological Innovations in Metals Engineering (TIME)
||In-situ Monitoring to Determine the Effect of Geometry on Internal Defects in Additive Manufacturing
||Andrew Harvey, Sabrina D'Alesandro, Joy Gockel
|On-Site Speaker (Planned)
Laser powder bed fusion (LPBF) is an additive manufacturing technique used for making complex parts through a layer-by-layer process. However, variability in thermal behavior leads to inconsistent microstructure and defects throughout the part. The in-situ process monitoring approach in this work uses sensors to evaluate each location in the LPBF process and the results are compared to micro-CT data. Two separate parts were printed, one small coupon and one larger coupon. Changing the geometry for LPBF parts will create different outcomes microscopically, because of the different thermal histories, that result in different defect characteristics. The pores were analyzed in order to understand the relationship between the geometry and the number, size and shape of pores created. The ability of the sensors to detect the location of the porosity is determined. Combining in-situ process monitoring with process understanding allows for the prediction of part quality and reliable material properties.