Table 2: Differences between numerically and experimentally obtained frequencies, for various crack depth ratios for the equivalent shaft length modeling (values within brackets before correction).

Frequency Crack depth ratios 0.0% 10% 20% 30% 40% 50% 60% 70% V V V V V V V V First 0.59% (0.59%) 0.40% (0.62%) 1.39% (1.54%) 1.18% (1.65%) 1.22% (2.32%) 1.26% (3.57%) 0.04% (4.72%) 1.03% (8.79%) Second 2.00% (2.00%) 1.61% (2.09%) 1.92% (2.33%) 0.84% (2.71%) 0.88% (3.42%) 0.25% (4.93%) 2.02% (6.52%) 3.68% (11.92%) Third 0.64% (0.64%) 0.78% (0.56%) 0.63% (0.44%) 0.75% (0.24%) 0.91% (0.17%) 1.16% (0.86%) 1.83% (1.65%) 1.71% (4.06%)