Research on the Fatigue Performance of TC6 Compressor Blade under the CCF Effect

Table 4

Natural vibration frequencies of the blades.

Blade number	Natural frequency /Hz
	The first order	The second order	The third order	The fourth order
a1	253.91	859.38	1371.88	1865.63
a2	243.81	840.62	1312.51	1824.32
a3	247.72	861.69	1347.71	1851.24
a4	247.14	853.13	1342.24	1849.08
a5	249.21	852.27	1353.89	1847.85
a6	253.88	868.83	1400.77	1868.21