Elliptical Crack Identification in a Nonrotating Shaft

Table 3

Values of the reference frequency ratios.

	Pinned-pinned
	Case 1	0.9995	0.9989	0.9995	1
Case 2	0.9956	0.9915	0.9959	1
Case 3	0.9717	0.9485	0.9767	0.9999
Case 4	0.9990	0.9999	0.9991	0.9998
Case 5	0.9915	0.9995	0.9927	0.9981
Case 6	0.9468	0.9967	0.9570	0.9889
Case 7	0.9997	0.9991	0.9990	0.9994
Case 8	0.9975	0.9930	0.9918	0.9952
Case 9	0.9835	0.9556	0.9529	0.9746