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

Table 9

Second fusion estimation of the true value for the residual stress at different parts of the bearing inner ring under different methods.

	Large end (MPa)	Small end (MPa)	Outer surface (vertical test) (MPa)	Outer surface (parallel test) (MPa)
Grey relation method	−819	−621	−413	−228
Membership function method	−895	−654	−461	−220
Maximum membership method	−1077	−712	−476	−231
Bootstrap method	−858	−670	−457	−239
Rolling mean method	−892	−693	−449	−238