Vibration Characteristics of a Cracked Rotor With Two Open Cracks

Comparison of Different Modelling Techniques to Simulate the Vibration of a Cracked Rotor

“…Sekhar [16] and Tsai and Wang [17] analyzed the behaviour of a rotor containing more than one crack. Sekhar [15] also investigated the in#uence of a slanted crack in a shaft.…”

A Simplified Method for Natural Frequency Analysis of a Multiple Cracked Beam

“…All the listed studies were concerned with the single crack; the dynamic behaviour of a double-cracked beam and a rotor with two cracks were investigated by Ruotolo et al [14] and Sekhar [15]. A beam with an arbitrary number n of cracks was studied by Shifrin and Ruotolo [16], who proposed a new method for evaluating natural frequencies of such a beam, that requires to calculate determinant of (n#2) order instead of (4n#4)-matrix determinant search as usually needed.…”

The influence of cracks in rotating shafts

“…Various theoretical and experimental works [3][4][5][6][7][8][9][10] performed over the last three decades have indicated that the change in modal properties (natural frequencies and modes shapes) may be useful for the detection of a crack, as well as for the identification of both crack depth and location. Moreover, the influence of opening and closing of crack due to the shaft self-weight for various orientations of the shaft has been investigated [3,11] and showed the effectiveness of the change in natural frequencies versus the orientation of the shaft to detect the orientation of the crack front.…”