The Contact State Monitoring for Seal End Faces Based on Acoustic Emission Detection

Table 3

Normalized features.

Sample number	RMS	EV	PAR	PV	AS	CF	FV
Number 1	0.842	0.012	0.293	0.134	0.232	0.043	0.771
Number 2	0.873	0.021	0.349	0.157	0.918	0.091	0.642
⋮	⋮
Number 36	0.484	0.025	0.886	0.096	0.325	0.208	0.513
Number 37	0.512	0.801	0.492	0.841	0.116	0.813	0.670
⋮	⋮
Number 72	0.525	0.921	0.413	0.652	0.301	0.461	0.135
Number 73	0.021	0.829	0.127	0.013	0.072	0.492	0.041
⋮	⋮
Number 107	0.076	0.027	0.104	0.127	0.100	0.573	0.062
Number 108	0.048	0.035	0.175	0.101	0.040	0.521	0.122