Cracked Rotors [electronic resource] : A Survey on Static and Dynamic Behaviour Including Modelling and Diagnosis / by Nicolò Bachschmid, Paolo Pennacchi, Ezio Tanzi.

By: Bachschmid, Nicolò [author.]Contributor(s): Pennacchi, Paolo [author.] | Tanzi, Ezio [author.] | SpringerLink (Online service)Material type: TextTextLanguage: English Publisher: Berlin, Heidelberg : Springer Berlin Heidelberg, 2010Description: online resourceContent type: text Media type: computer Carrier type: online resourceISBN: 9783642014857Subject(s): Engineering | Materials | Mechanical engineering | Machinery | Electric engineering | Engineering | Continuum Mechanics and Mechanics of Materials | Structural Mechanics | Machinery and Machine Elements | Energy Technology | Manufacturing, Machines, ToolsAdditional physical formats: Printed edition:: No titleDDC classification: 620.1 LOC classification: TA405-409.3QA808.2Online resources: Click here to access online
Contents:
Cracks in Rotating Shafts -- Typical Dynamic Behaviour of Cracked Shafts -- Rotor Testing for Crack Detection -- Laboratory Tests on Cracked Shafts -- Crack Modelling -- Results Obtained Using Simulations -- Some Special Effects Caused by Cracks -- Crack Diagnosis in Rotating Shafts.
In: Springer eBooksSummary: 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 are accurate and reliable. This monograph shows the typical dynamical behavior of cracked shafts and presents tests for detecting cracks. 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, and some results of a numerical sensitivity analysis of the vibrations to the presence and severity of the crack are shown. Finally the book describes some crack identification procedures and shows some results in model based crack identification in position and depth. The book is useful for higher university courses in mechanical and energetic engineering, but also for skilled technical people employed in power generation industries.
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Cracks in Rotating Shafts -- Typical Dynamic Behaviour of Cracked Shafts -- Rotor Testing for Crack Detection -- Laboratory Tests on Cracked Shafts -- Crack Modelling -- Results Obtained Using Simulations -- Some Special Effects Caused by Cracks -- Crack Diagnosis in Rotating Shafts.

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 are accurate and reliable. This monograph shows the typical dynamical behavior of cracked shafts and presents tests for detecting cracks. 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, and some results of a numerical sensitivity analysis of the vibrations to the presence and severity of the crack are shown. Finally the book describes some crack identification procedures and shows some results in model based crack identification in position and depth. The book is useful for higher university courses in mechanical and energetic engineering, but also for skilled technical people employed in power generation industries.

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