Table 4.

Bonding criteria, bonding strength, and hardness results in all cases.

No.	RS (RPM)	DT (s)	PD (mm)	$\mathit{W}$ Parameter (s)	${\mathit{W}}^{\prime }$ Parameter (mm)	Hardness (Hv)	Bonding Strength (kN)	Average Temperature (°C)
1	800	6	2.2	2.34	0.94	X	X	337.8
2	800	6	2.4	2.48	1.00	X	X	338.4
3	800	6	2.6	2.39	0.96	X	X	342.5
4	800	8	2.2	3.68	1.07	X	X	346.7
5	800	8	2.4	3.89	1.62	85	2.3	357.8
6	800	8	2.6	3.83	1.59	80	2.7	352.3
7	800	10	2.2	3.72	1.51	86	2.5	361.2
8	800	10	2.4	3.79	1.54	85	2.8	356.2
9	800	10	2.6	3.73	1.51	75	3.2	353.3
10	1000	6	2.2	4.35	0.62	X	X	376.8
11	1000	6	2.4	4.56	1.32	72	2.9	391.0
12	1000	6	2.6	4.49	1.30	70	3.3	382.2
13	1000	8	2.2	4.67	1.37	75	3.0	402.3
14	1000	8	2.4	4.82	1.43	70	3.2	422.1
15	1000	8	2.6	4.76	1.40	68	3.5	418.3
16	1000	10	2.2	4.64	1.36	70	3.1	431.1
17	1000	10	2.4	4.71	1.48	67	3.3	408.6
18	1000	10	2.6	4.69	1.48	65	3.7	392.8
19	1200	6	2.2	3.45	0.88	68	3.7	401.1
20	1200	6	2.4	3.74	1.00	60	4.0	406.7
21	1200	6	2.6	3.55	0.92	57	4.1	422.2
22	1200	8	2.2	3.68	0.97	62	4.0	438.7
23	1200	8	2.4	3.94	1.08	55	4.2	439.2
24	1200	8	2.6	3.75	1.00	52	3.7	445.6
25	1200	10	2.2	3.54	0.92	58	3.5	438.8
26	1200	10	2.4	3.76	1.00	53	4.1	445.8
27	1200	10	2.6	3.62	0.95	50	3.2	421.0