Fault Feature Analysis of a Cracked Gear Coupled Rotor System

Table 3

Crack case data under different crack depths.

Crack case	Crack depth (%)	Crack size (mm)	Crack case	Crack depth (%)	Crack size (mm)	Crack case	Crack depth (%)	Crack size (mm)	Condition
1 (A)^#	0^#	q = 0^#	12	22	𝑞=1.41	23	44	𝑞=2.82	Ω1 = 1000 rev/min; 𝜐=45^∘; 𝜓=35^∘; 𝐿𝑐=𝐿; 𝑞𝑒 = 𝑞0 = q; 𝑞1max= 3.21 mm
2	2	q = 0.13	13	24	𝑞=1.54	24	46	𝑞=2.95
3	4	q = 0.26	14	26	𝑞=1.67	25	48	𝑞=3.08
4	6	𝑞=0.39	15	28	𝑞=1.80	26	50	𝑞=3.21
5	8	𝑞=0.51	16	30	𝑞=1.93	27	52	𝑞=3.34
6	10	𝑞=0.64	17	32	𝑞=2.05	28	54	𝑞=3.47
7	12	𝑞=0.77	18	34	𝑞=2.18	29	56	𝑞=3.60
8	14	𝑞=0.90	19	36	𝑞=2.31	30	58	𝑞=3.72
9	16	𝑞=1.03	20	38	𝑞=2.44	31 (D)^#	60^#	𝑞=3.85^#
10	18	𝑞=1.16	21 (C)^#	40^#	𝑞=2.57^#
11 (B)^#	20^#	𝑞=1.28^#	22	42	𝑞=2.70