Fault Feature Analysis of a Cracked Gear Coupled Rotor System

Table 5

Crack propagation case data under different crack widths.

Crack case	Crack width (%)	Crack size (mm)	Crack case	Crack width (%)	Crack size (mm)	Crack case	Crack width (%)	Crack size (mm)	Condition
1 (A)^#	0^#	𝑞𝑒=0;𝐿𝑐=0^#	9	40	𝑞𝑒=0; 𝐿𝑐=8	17	80	𝑞𝑒=0;𝐿𝑐=16	Ω1=1000 rev/min; 𝜐=45^∘; 𝜓=35^∘; 𝑞0=3 mm
2	5	𝑞𝑒=0;𝐿𝑐=1	10	45	𝑞𝑒=0; 𝐿𝑐=9	18	85	𝑞𝑒=0;𝐿𝑐=17
3	10	𝑞𝑒=0;𝐿𝑐=2	11 (C)^#	50^#	𝑞𝑒=0;𝐿𝑐=10^#	19	90	𝑞𝑒=0;𝐿𝑐=18
4	15	𝑞𝑒=0;𝐿𝑐=3	12	55	𝑞𝑒=0;𝐿𝑐=11	20	95	𝑞𝑒=0;𝐿𝑐=19
5	20	𝑞𝑒=0;𝐿𝑐=4	13	60	𝑞𝑒=0;𝐿𝑐=12	21 (D)^#	100^#	𝑞𝑒=0;𝐿𝑐=20^#
6 (B)^#	25^#	𝑞𝑒=0;𝐿𝑐=5^#	14	65	𝑞𝑒=0;𝐿𝑐=13	22 (E)^#	120^#	𝑞𝑒=3;𝐿𝑐=20^#
7	30	𝑞𝑒=0;𝐿𝑐=6	15	70	𝑞𝑒=0;𝐿𝑐=14
8	35	𝑞𝑒=0;𝐿𝑐=7	16	75	𝑞𝑒=0;𝐿𝑐=15