Titlebook: Cracked Rotors; A Survey on Static a Nicolò Bachschmid,Paolo Pennacchi,Ezio Tanzi Book 2010 Springer-Verlag Berlin Heidelberg 2010 Rotatin

Visual-Acuity

Meditative

Typical Dynamic Behaviour of Cracked Shafts,tion monitoring system is installed and vibrations are analyzed. This chapter is focused on the typical symptoms that can be noticed in industrial rotating machinery and specifically three aspects are considered: the vibrations at rated speed, the so-called . that affects cracked rotors and the vibr

棲息地

Expediency

Results Obtained Using Simulations,ated results are obtained with the approach described in sections 5.3.1 and 5.4.3. The good agreement between the results confirm the validity of the described approach. Other simulated results will be presented also in chapter 7 of this book, in order to highlight different peculiar behaviours.

florid

必死

Cervical-Spine

Ophthalmologist

the following, two approaches are presented, along with some applications: i) a qualitative one, which does not allow defining severity and position of the identified fault; ii) a model based approach, which on the contrary identifies also severity and position of the fault.

Scintillations

resultant of the tangential stresses due to the applied torque and/or to shear forces is eccentric with respect to the rotor axis: this causes the coupling of bending and torsional behaviour. In addition the 1X opening and closing of the crack, imposed by the bending load, generates also axial 1X displacements.

說笑

Some Special Effects Caused by Cracks,resultant of the tangential stresses due to the applied torque and/or to shear forces is eccentric with respect to the rotor axis: this causes the coupling of bending and torsional behaviour. In addition the 1X opening and closing of the crack, imposed by the bending load, generates also axial 1X displacements.