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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