Optimization and Characterization Studies of Dissimilar Friction Stir Welding Parameters of Brass and Aluminum Alloy 6063 Using Taguchi

Table 2

Taguchi L₂₇ OA with measured hardness values and SNR.

Runs	Ntool (rpm)	Tpreheat (°C)	Straverse (mm/min)	Ppin	Hardness (HRB)	SNR
1	1200	36	16	Hexagonal	72.1	37.16
2	1200	36	16	Hexagonal	73.3	37.30
3	1200	36	16	Hexagonal	72.3	37.18
4	1200	300	24	Square	71.7	37.11
5	1200	300	24	Square	72.0	37.15
6	1200	300	24	Square	72.3	37.18
7	1200	400	32	Triangular	71.0	37.03
8	1200	400	32	Triangular	70.9	37.01
9	1200	400	32	Triangular	71.9	37.13
10	1400	36	24	Triangular	70.5	36.96
11	1400	36	24	Triangular	70.3	36.94
12	1400	36	24	Triangular	71.1	37.04
13	1400	300	32	Hexagonal	73.2	37.29
14	1400	300	32	Hexagonal	72.8	37.24
15	1400	300	32	Hexagonal	72.2	37.17
16	1400	400	16	Square	71.7	37.11
17	1400	400	16	Square	72.3	37.18
18	1400	400	16	Square	72.0	37.15
19	1600	36	32	Square	71.1	37.04
20	1600	36	32	Square	70.7	36.99
21	1600	36	32	Square	70.0	36.90
22	1600	300	16	Triangular	70.8	37.00
23	1600	300	16	Triangular	70.6	36.98
24	1600	300	16	Triangular	71.9	37.13
25	1600	400	24	Hexagonal	70.7	36.99
26	1600	400	24	Hexagonal	70.0	36.90
27	1600	400	24	Hexagonal	71.8	37.12