Experimental Study on Lateral Resolution of Phased Array Ultrasonic Testing of Irregular Structure Weld Defects

Table 6

Test points and response values in Factorial test.

NO.	X1	X2	X3	Y
1	−1	−1	−1	0.5
2	1	−1	−1	3
3	−1	1	−1	0.7
4	1	1	−1	1.8
5	−1	−1	1	1.3
6	1	−1	1	2.2
7	−1	1	1	5.6
8	1	1	1	11.1
9	0	0	0	5
10	0	0	0	5.2
11	0	0	0	5.1
12	0	0	0	4.9