Heat Index Based Optimisation of Primary Process Parameters in Friction Stir Welding on Light Weight Materials

Table 3

Defects identified.

R Shoulderω	Heat index	Weld defects due to insufficient heat supply	R Shoulderω	Heat index	Weld defects due to excess heat supply (excess flash)
0.63	8.00		1.51	24.00
0.75	8.00		1.51	20.57
0.63	9.14		1.38	20.17
0.71	10.13		1.26	16.67
0.75	9.14		1.32	24.00
0.88	8.00		1.21	20.17
0.85	10.13		1.10	16.67
0.79	12.50		1.13	24.00