Research Article

Alpha-Stable Distribution and Multifractal Detrended Fluctuation Analysis-Based Fault Diagnosis Method Application for Axle Box Bearings

Table 3

The detailed descriptions of seven vibration acceleration signals.

Operational statusαγHhq0hqmin

Normal (S1)1.89930.009629.41201.84571.4556
1.90670.008729.05821.85911.5075
1.91510.008930.43351.83831.4541
1.90940.009230.92541.82471.5057
1.91950.008830.00251.84801.4841
1.90340.009529.64161.85101.4693
1.90520.009529.78451.84491.4516
1.91320.009430.03231.83951.4932
1.90770.009330.38891.85411.5014
1.90230.009031.17371.84511.4525

Slight inner-race faults (S2)1.33200.010726.11551.71601.0720
1.31540.010225.54691.71371.0633
1.32960.010125.81401.71351.0638
1.32300.011226.11351.70871.0595
1.32870.010926.16921.70651.0607
1.32920.010425.98361.70661.0590
1.31720.010427.07541.71761.0719
1.31330.010926.26621.70601.0611
1.32120.011126.04221.71971.0644
1.31640.011526.38231.72691.0789

Serious inner-race faults (S3)0.70180.015119.45131.63880.9678
0.69250.014418.15111.64450.9641
0.69560.014918.99601.64590.9738
0.70490.015218.82351.64830.9577
0.68410.014619.95491.63940.9867
0.68980.014419.98181.65600.9787
0.69850.015220.19241.64550.9669
0.68190.015319.18571.64980.9629
0.69000.015019.81591.65520.9838
0.69610.015619.40171.64960.9741

Slight outer-race faults (S4)1.51620.015817.69171.55151.2857
1.53070.015817.77551.52961.2828
1.52230.016417.73141.54511.3100
1.52540.015817.75761.52311.3149
1.50470.015917.75121.53611.2986
1.52820.016117.58791.53061.2912
1.50930.015817.80531.52161.2982
1.51900.015917.75551.55071.3040
1.52420.016117.60281.54401.3017
1.52210.016217.50191.54111.2853

Serious outer-race faults (S5)1.42050.018815.12361.40371.1938
1.42500.018615.29961.39301.2019
1.43220.018115.09081.39601.2091
1.41580.018615.18851.39081.1998
1.43070.018715.19361.38101.2067
1.42470.018515.35941.39261.2138
1.41930.017716.10911.39341.1992
1.40960.019315.71481.38241.2013
1.41660.019315.74491.39091.2060
1.42020.019115.86961.37581.1869

Slight ball faults (S6)1.59290.012123.15081.68171.3872
1.60820.011923.49601.68391.3865
1.60020.012123.24101.67461.3822
1.59190.011923.65571.68631.3884
1.58440.012322.95311.68481.3910
1.58800.012023.41841.68311.3833
1.59990.012123.17171.67281.3847
1.58900.011724.01671.67331.3857
1.60570.012023.34151.68251.3832
1.59600.012322.85471.68351.3765

Serious ball faults (S7)1.36430.020312.78301.47391.2476
1.35550.019912.92261.48701.2584
1.36340.020313.36431.46761.2451
1.35520.021013.26241.47151.2599
1.35830.019713.47971.47551.2608
1.34190.019914.00011.48031.2462
1.35400.020513.69461.48221.2461
1.34920.021113.34861.48211.2570
1.35090.020713.54151.48131.2592
1.36790.021513.13821.49821.2529