Figure 3

Pairs \((\alpha , z_S)\) that generate 2D melt pool traces with an error smaller than the error threshold in Table 1 for each experiment, out of a large set of sampled pairs. Top row: conductive model. Bottom row: convective model. The grayed region indicates the range of sample surface locations common to all experiments in the SG and TG groups. No common set of values was found with the conductive model, despite the fact that experiments in the SG and TG group were all performed at the same sample surface location. Larger error thresholds of 1.2 \(\upmu\)m instead of 1 \(\upmu\)m and 5.5 \(\upmu\)m instead of 5 \(\upmu\)m had to be selected for the \({\hbox {SG}}_4\) and \({\hbox {SMG}}_2\) cases, respectively, to find at least one pair with the conductive model. Some \((\alpha , z_S)\) values are labeled (e.g. B2) or boxed to be referenced elsewhere, and optimal values in Table 1 for each experiment are indicated with diamonds.