Springback Study on Profile Flexible 3D Stretch-Bending Process Using the Neural Network

Table 3

Levels and impact factors of the orthogonal experiment.

Level	Impact factor
	A	B	C	D	E
	Alloy grade	(°)	(°)	N
1	6063	14	14	4	0.05
2	6005A	18	18	6	0.1
3	5052	22	22	8	0.15
4	5083	26	26	10	0.2
5	6082	30	30	12	0.25