Neuro-Fuzzy Model for the Prediction and Classification of the Fused Zone Levels of Imperfections in Ti6Al4V Alloy Butt Weld

Table 3

Standard deviations of the levels for imperfections.

Group no.	ℎ1	ℎ2	ℎ3	ℎ4	ℎ5	ℎ6
1.0	—	0.038	—	—	—	0.47
1.1	—	0.035	0.069	—	—	0.203
1.2	—	0.050	0.059	—	—	0.118
1.3	0.025	0.010	0.069	—	—	0.215
1.4	0.007*	0.023*	0.007	—	—	0.088*

∗Range (mm).