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Table 4 First six frequencies for uncracked and cracked single blade for rotational velocity \(=\) 2000 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
1 637.9 636.5 630.1 622.0
2 1145.4 1143.8 1137.0 1124.4
3 1457.4 1432.2 1401.5 1365.8
4 2257.9 2251.6 2241.8 2250.2
5 2556.7 2439.2 2384.8 2335.3
6 3005.6 2971.4 2929.3 2955.9