Research Article
Mechanical Properties Optimization of Friction Stir Welded Lap Joints in Aluminium Alloy
Table 5
Ultimate strength experimental responses.
| | rpm | s/mm | Us1 | Us2 | Us3 | Us4 | Std. US | Dim | Avg. US | WGTS_ADJ |
| | 1377.5 | 0.267 | 502.0 | 480.0 | 484.0 | — | 11.719 | 3 | 488.667 | 0.0324 | | 2222.5 | 0.267 | 431.0 | 432.5 | 460.2 | — | 16.443 | 3 | 441.233 | 0.0081 | | 1377.5 | 0.533 | 444.6 | 419.5 | 478.0 | — | 29.348 | 3 | 447.367 | 0.0026 | | 2222.5 | 0.533 | 435.6 | 452.0 | 285.0 | 392 | 75.160 | 4 | 391.150 | 0.0008 | | 1800.0 | 0.400 | 491.0 | 501.4 | 449.0 | — | 27.743 | 3 | 480.467 | 0.0046 | | 1800.0 | 0.400 | 496.6 | 492.5 | 428.6 | — | 38.131 | 3 | 472.567 | 0.0046 | | 1800.0 | 0.400 | 456.0 | 485.7 | 483.3 | — | 16.498 | 3 | 475.000 | 0.0046 | | 1800.0 | 0.400 | 475.7 | 451.8 | 494.0 | — | 21.162 | 3 | 473.833 | 0.0046 | | 1800.0 | 0.400 | 472.0 | 466.8 | 514.0 | — | 25.881 | 3 | 484.267 | 0.0046 |
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