Research on the Simulation of Wheelset Response Characteristic Identification of Railway Fastener Loosening

Table 7

Orthogonality index of each component in EMD and OEMD3.

IMF	1	2	3	4	5	6	7	8
1	0.5	3.80e − 2	1.97e − 2	1.02e − 2	1.11e − 2	6.29e − 2	9.82e − 3	4.79e − 3
2	1.05e − 17	0.5	5.84e − 2	2.36e − 3	6.89e − 3	6.65e − 3	1.17e − 2	3.48e − 3
3	4.42e − 17	1.93e − 16	0.5	6.19e − 4	2.80e − 3	1.13e − 2	6.07e − 3	4.35e − 3
4	1.23e − 18	8.65e − 18	8.68e − 18	0.5	8.86e − 2	1.83e − 3	2.15e − 3	4.76e − 3
5	4.38e − 17	7.20e − 18	5.32e − 17	1.39e − 16	0.5	7.31e − 3	1.80e − 4	1.53e − 3
6	1.62e − 16	1.38e − 17	1.10e − 17	3.53e − 19	1.87e − 18	0.5	5.6e − 2	1.59e − 2
7	4.78e − 18	8.10e − 17	5.82e − 18	6.86e − 18	3.79e − 18	1.20e − 16	0.5	3.63e − 2
8	4.79e − 3	3.26e3	4.75e3	4.68e3	1.15e2	1.65e2	4.25e2	0.5