Linking In Situ Melt Pool Monitoring to Melt Pool Size Distributions and Internal Flaws in Laser Powder Bed Fusion

In situ monitoring of the melt pools in laser powder bed fusion (LPBF) has enabled elucidation process phenomena. There been an increasing interest also using pool to identify anomalies and control quality manufactured parts. However, a better understanding variability relation incidence internal flaws are necessary achieve this goal. This study aims link distributions dimensions signal characteristics obtained from monitoring. A mapping approach is employed manufacturing Hastelloy X, comprising vast portion space. Ex measurements analysis correlated through visible near-infrared spectra. It found that related presence flaws, but scatter not detectable by system study. The intensities proportional dimensions, increasingly dynamic following conditions increase generation spatter.