Optimization of the Physical and Mechanical Properties of a Spline Surface Fabricated by High-Speed Cold Roll Beating Based on Taguchi Theory

Table 4

Signal-to-noise ratio of the cold roll-beating spline experimental results.

Experiment serial number	Signal-to-noise ratio of; work-hardening degree, (dB)	Residual stress; signal-to-noise ratio, (dB)	(dB)
1	42.982	36.576	39.779
2	43.128	37.231	40.180
3	43.383	37.994	40.689
4	43.447	38.383	40.915
5	43.468	38.801	41.135
6	42.938	36.747	39.843
7	43.075	37.520	40.298
8	43.306	37.929	40.618
9	43.371	38.386	40.879
10	43.411	38.797	41.104
11	42.976	37.165	40.071
12	43.041	38.006	40.524
13	43.282	38.571	40.927
14	43.333	38.893	41.113
15	43.405	37.271	40.338
16	42.914	37.957	40.436
17	43.047	38.357	40.702
18	43.276	38.550	40.913
19	43.389	38.883	41.136
20	43.465	37.472	40.469
21	42.905	37.906	40.406
22	43.068	38.408	40.738
23	43.299	38.408	40.854
24	43.419	38.575	40.997
25	43.457	38.910	41.184