Grey Relation Evaluation and Truth Value Fusion of Rolling Bearing Multisource Residual Stress

Table 7

Calculation results for the residual stress parameters of the outer surface of the bearing inner rings (the vertical test).

Sample number	Mean value (MPa)	Uncertainty (MPa)	Grey confidence level (%)
1	−442	84.4	77.8
2	−489	54.5	90.67
3	−495	50	100 (intrinsic sequence)
4	−417	63.9	94.465
5	−404	114	96.85