Optimization of Laser Transmission Joining Process Parameters on Joint Strength of PET and 316 L Stainless Steel Joint Using Response Surface Methodology

Table 3

Design matrix and experimental results.

Standard order	Run order	Power (watt)	Joining speed (mm/min.)	Stand-off distance (mm)	Joint strength (MPa)
18	1	16	150	2	89.15
1	2	14	100	1	69.9
3	3	14	200	1	60.59
8	4	18	200	3	79.65
9	5	12.64	150	2	68.18
15	6	16	150	2	88.31
6	7	18	100	3	97.1
17	8	16	150	2	88.12
19	9	16	150	2	88.71
14	10	16	150	3.68	69.76
16	11	16	150	2	88
4	12	18	200	1	80.14
13	13	16	150	0.32	62.2
5	14	14	100	3	77.84
12	15	16	234.09	2	70.9
2	16	18	100	1	92.35
20	17	16	150	2	88.71
7	18	14	200	3	62.75
11	19	16	65.91	2	94.1
10	20	19.36	150	2	100.36