Research Article
Assessment of Rotational Speed and Plunge Rate on Lap Shear Strength of FSSW Joints of AA7075/Mild Steel
Table 3
Design matrix and its response.
| ā | N (rpm) | R (mm/min) | T (sec) | D | ā |
| Speed of tool rotation (N) | 800 | 4 | 5 | 3 | 6.12 | 850 | 4 | 5 | 3 | 7.45 | 900 | 4 | 5 | 3 | 9.46 | 950 | 4 | 5 | 3 | 8.56 | 1000 | 4 | 5 | 3 | 7.21 |
| Rate of plunge (R) | 900 | 2 | 5 | 3 | 8.31 | 900 | 3 | 5 | 3 | 8.42 | 900 | 4 | 5 | 3 | 8.89 | 900 | 5 | 5 | 3 | 7.28 | 900 | 6 | 5 | 3 | 6.81 |
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