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Table 3 First six frequencies for uncracked and cracked single blade for rotational velocity \(=\) 1000 rad/s

From: Static fracture and modal analysis simulation of a gas turbine compressor blade and bladed disk system

Mode number

Uncracked

4 mm crack depth

8 mm crack depth

16 mm crack depth

1

404.3

403.5

398.1

390.8

2

1061.0

1057.4

1031.9

992.5

3

1122.8

1120.6

1111.8

1103.1

4

2151.4

2145.7

2104.5

2054.7

5

2308.5

2309.8

2260.3

2219.5

6

2795.1

2800.9

2769

2739.7