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Table 2 First six frequencies for uncracked and cracked single blade for rotational velocity \(=\) 500 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

311.6

310.4

305.7

298.9

2

984.1

970.5

939.4

896.2

3

1077.8

1077.3

1076.3

1071.2

4

2085.7

2084.3

2055.2

1997.7

5

2250.4

2246.9

2213.3

2181.0

6

2727.3

2722.7

2704.3

2670.1