Abstract
Continuous operation of rotating machinery with a rotor crack is a risk condition since the rotor crack grows rapidly and may fail causing a catastrophic accident. This paper investigates the finite element model of the rotating shaft with an open crack. The analytical method of the natural frequencies of such a rotor system with an open crack is developed. By comparing both the theoretical and experimental results of the natural frequencies, the modelling of the rotating shaft with an open crack is improved. Furthermore, the accuracy of the developed crack model is confirmed in the rotating test.
