Research Article
Weldability Investigation and Optimization of Process Variables for TIG-Welded Aluminium Alloy (AA 8006)
Table 13
Analysis of variance for regression model (S/N ratio-impact strength).
| | Source | DF | Seq SS | Contribution (%) | Adj SS | Adj MS | F-value | value |
| | Regression | 3 | 630.83 | 96.52 | 630.83 | 210.278 | 46.27 | ≤0.001 | | Peak current (Amps) | 1 | 96.00 | 14.69 | 96.00 | 96.000 | 21.12 | 0.006 | | Base current (Amps) | 1 | 468.17 | 71.63 | 468.17 | 468.167 | 103.02 | ≤0.001 | | Welding speed (mm/min) | 1 | 66.67 | 10.20 | 66.67 | 66.667 | 14.67 | 0.012 | | Error | 5 | 22.72 | 3.48 | 22.72 | 4.544 | | | | Total | 8 | 653.56 | 100.00 | | | | |
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