A Hybrid Time-Frequency Analysis Method for Railway Rolling-Element Bearing Fault Diagnosis

Table 6

SP values of IMFs obtained using VMD.

Mode	IMF1	IMF2	IMF3	IMF4	IMF5	IMF6	IMF7	IMF8
SP	0.0844	0	0.2443	0.3130	0.2680	0.3670	0.2174	0.2441