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

Table 6

Centres for imperfection clusters (mm).

	Lower	Middle	Upper
Undercut (ℎ1)	0.012	0.033	0.071
Excess metal (ℎ2)	0.054	0.116	0.194
Excessive penetration (ℎ3)	0.035	0.134	0.243
Lack of penetration (ℎ6)	0.198	0.457	0.66