Research Article
Weldability Investigation and Optimization of Process Variables for TIG-Welded Aluminium Alloy (AA 8006)
Table 10
Analysis of variance for the regression model (S/N ratio-tensile strength).
| Source | DF | Seq SS | Contribution (%) | Adj SS | Adj MS | F-value | value |
| Regression | 3 | 2298.22 | 99.93 | 2298.22 | 766.07 | 2240.8 | ≤0.001 | Peak current (Amps) | 1 | 4.39 | 0.19 | 4.39 | 4.39 | 12.83 | 0.016 | Base current (Amps) | 1 | 1418.04 | 61.66 | 1418.04 | 1418.04 | 4147.9 | ≤0.001 | Welding speed (mm/min) | 1 | 875.80 | 38.08 | 875.80 | 875.80 | 2561.8 | ≤0.001 | Error | 5 | 1.71 | 0.07 | 1.71 | 0.34 | | | Total | 8 | 2299.93 | 100.00 | | | | |
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