=+ The article reported the impact of various SAW process settings (including current, voltage, and welding speed) on characteristics of the weldment profile. In one investigation, the SAW process was run on various current settings (A) and the depth (mm) of the HAZ was recorded. The data below is partitioned across high (525 A) and nonhigh

(,525 A) current settings:

NonHigh: 1.04 1.15 1.23 1.69 1.92 1.98 2.36 2.49 2.72 1.37 1.43 1.57 1.71 1.94 2.06 2.55 2.64 2.82 High: 1.55 2.02 2.02 2.05 2.35 2.57 2.93 2.94 2.97