Upset Prediction in Friction Welding Using Radial Basis Function Neural Network

Table 4

Comparison between FE simulated upsets and RBF predicted ones.

No.	Condition	Upset (mm)		Absolute error (mm)	Relative error (%)
		FE simulated	RBF predicted
1	300 MPa—147.8 rad/s	1.96	2.12	0.16	8.16
2	300 MPa—157.8 rad/s	3.72	3.64	0.08	2.15
3	300 MPa—167.8 rad/s	5.53	5.23	0.30	5.42
4	400 MPa—147.8 rad/s	5.38	5.35	0.03	0.56
5	400 MPa—157.8 rad/s	7.09	7.06	0.03	0.42
6	400 MPa—167.8 rad/s	8.75	8.83	0.08	0.91
7	500 MPa—147.8 rad/s	7.72	7.64	0.08	1.04
8	500 MPa—157.8 rad/s	9.43	9.54	0.11	1.17
9	500 MPa—167.8 rad/s	11.63	11.5	0.13	1.12