Table 2.

Experiment design.

Test No.	Sliding Speed, mm/min	Pressure, MPa	Friction Conditions
1	10	4.38	dry friction
2	10	6.53	dry friction
3	10	8.13	dry friction
4	10	9.47	dry friction
5	10	10.63	dry friction
6	10	11.69	dry friction
7	20	4.38	dry friction
8	20	6.53	dry friction
9	20	8.13	dry friction
10	20	9.47	dry friction
11	20	10.63	dry friction
12	20	11.69	dry friction
13	10	4.38	hydraulic oil LHL 32
14	10	6.53	hydraulic oil LHL 32
15	10	8.13	hydraulic oil LHL 32
16	10	9.47	hydraulic oil LHL 32
17	10	10.63	hydraulic oil LHL 32
18	10	11.69	hydraulic oil LHL 32
19	20	4.38	hydraulic oil LHL 32
20	20	6.53	hydraulic oil LHL 32
21	20	8.13	hydraulic oil LHL 32
22	20	9.47	hydraulic oil LHL 32
23	20	10.63	hydraulic oil LHL 32
24	20	11.69	hydraulic oil LHL 32
25	10	4.38	machine oil LAN 46
26	10	6.53	machine oil LAN 46
27	10	8.13	machine oil LAN 46
28	10	9.47	machine oil LAN 46
29	10	10.63	machine oil LAN 46
30	10	11.69	machine oil LAN 46
31	20	4.38	machine oil LAN 46
32	20	6.53	machine oil LAN 46
33	20	8.13	machine oil LAN 46
34	20	9.47	machine oil LAN 46
35	20	10.63	machine oil LAN 46
36	20	11.69	machine oil LAN 46
37	10	4.38	engine oil SAE 5W-40 C3
38	10	6.53	engine oil SAE 5W-40 C3
39	10	8.13	engine oil SAE 5W-40 C3
40	10	9.47	engine oil SAE 5W-40 C3
41	10	10.63	engine oil SAE 5W-40 C3
42	10	11.69	engine oil SAE 5W-40 C3
43	20	4.38	engine oil SAE 5W-40 C3
44	20	6.53	engine oil SAE 5W-40 C3
45	20	8.13	engine oil SAE 5W-40 C3
46	20	9.47	engine oil SAE 5W-40 C3
47	20	10.63	engine oil SAE 5W-40 C3
48	20	11.69	engine oil SAE 5W-40 C3