Mechanical Properties Optimization of Friction Stir Welded Lap Joints in Aluminium Alloy

Table 2

Yield strength experimental responses.

rpm	s/mm	Ys1	Ys2	Ys3	Ys4	Std. Ys	Dim	Avg. Ys	WGTS_ADJ
1377.5	0.267	372	365	353	—	9.609	3	363.333	0.0390
2222.5	0.267	361	323	356	—	20.648	3	346.667	0.0084
1377.5	0.533	349	319	368	—	24.705	3	345.333	0.0059
2222.5	0.533	402	345	249	343	63.373	4	334.750	0.0011
1800.0	0.400	353	356	326	—	16.523	3	345.000	0.0063
1800.0	0.400	356	374	320	—	27.495	3	350.000	0.0063
1800.0	0.400	360	366	348	—	9.165	3	358.000	0.0063
1800.0	0.400	342	357	397	338	26.938	4	358.500	0.0084
1800.0	0.400	355	343	392	—	25.541	3	363.333	0.0063