Table 3.

Experimental results with categorised defects and repeatability

Physical run number	Welding energy (kJ)	Vibration amplitude (µm)	Welding force (N)	LSS (MPa)	RSD (%) [repeatability class]	Defect class
29/30/69	1	85	400	12.90	24.41 [2]	2
39/40/74	1	85	800	13.50	52.99 [3]	2
25/26/67	1	85	1200	22.04	13.83 [2]	1
37/38/73	1	100	400	10.79	54.87 [3]	3
35/36/72	1	100	800	17.43	21.47 [2]	1
21/22/65	1	100	1200	23.41	11.71 [2]	2
45/46/77	1	115	400	14.48	8.35 [1]	1
31/32/70	1	115	800	17.38	8.52 [1]	1
49/50/79	1	115	1200	6.04	18.90 [2]	1
21/52/80	1.75	85	400	22.26	9.98 [1]	2
15/16/62	1.75	85	800	10.56	28.80 [2]	2
19/20/64	1.75	85	1200	2.59	35.98 [3]	3
9/10/59	1.75	100	400	16.38	13.15 [2]	2
23/24/66	1.75	100	800	19.71	6.45 [1]	2
3/4/56	1.75	100	1200	25.98	1.01 [1]	3
41/42/75	1.75	115	400	17.12	25.31 [2]	1
17/18/63	1.75	115	800	16.26	24.84 [2]	2
11/12/60	1.75	115	1200	16.22	14.80 [2]	1
7/8/58	2.5	85	400	15.48	24.95 [2]	3
1/2/55	2.5	85	800	14.33	18.74 [2]	1
47/48/78	2.5	85	1200	5.06	95.03 [3]	3
43/44/76	2.5	100	400	9.70	25.50 [2]	3
33/34/71	2.5	100	800	6.62	70.70 [3]	3
53/54/81	2.5	100	1200	6.79	73.03 [3]	3
13/14/61	2.5	115	400	11.59	78.05 [3]	3
27/28/68	2.5	115	800	12.46	5.76 [1]	3
5/6/57	2.5	115	1200	7.57	82.76 [3]	2