Cracked rotors: a survey on static and dynamic behaviour including modelling and diagnosis

Cracks can develop in rotating shafts and can propagate to relevant depths without affecting consistently the normal operating conditions of the shaft. In order to avoid catastrophic failures, accurate vibration analyses have to be performed for crack detection. The identification of the crack location and depth is possible by means of a model based diagnostic approach, provided that the model of the crack and the model of the cracked shaft dynamical behavior areaccurate and reliable. This monograph shows the typical dynamical behavior ofcracked shafts and presents tests for detecting cracks are presented. The book describes how to model cracks, how to simulate the dynamical behavior of cracked shaft, and compares the corresponding numerical with experimental results. All effects of cracks on the vibrations of rotating shafts are analyzed, andsome results of a numerical sensitivity analysis of the vibrations to the presence and severity of the crack are shown. Cracks are described an analysed from the practical point of view in industry Modeling facilitates the computational analysis of cracks Many practical examples illustrate the basic concept INDICE: Introduction.- The development of cracks in rotating shafts.- Field experience in cracked rotor dynamical behaviour.- Tests for the detection ofcracks in rotors.- Laboratory tests on cracked shafts.- Modelling of breathing behaviour.- Modelling of dynamical behaviour of cracked shafts.- Effect of transverse cracks on lateral vibrations.- Effect of transverse cracks on torsion vibrations.- Effect of position and shape of the crack.- Non-linear effects.- Diagnosing cracks in rotating shafts.

• ISBN: 978-3-642-01484-0
• Editorial: Springer
• Encuadernacion: Cartoné
• Páginas: 250
• Fecha Publicación: 01/06/2009
• Nº Volúmenes: 1
• Idioma: Inglés