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Full-Text Articles in Mechanical Engineering
Development Of Effective Balancing Procedure For Ct Scanner, Jeremy David Pettinato
Development Of Effective Balancing Procedure For Ct Scanner, Jeremy David Pettinato
ETD Archive
Since the beginning of medical organizations, engineering departments have introduced new innovative ideas and designs to advance image quality. In the case of a CT scanner, one of the largest and most cost effective ways to achieve superior image quality is through a well balanced rotating array. The focus of this thesis is the development of a balancing procedure which will effectively balance a CT scanner rotating array. Rigid rotor (dynamic) balancing techniques are utilized in order to balance the Philips CT scanner rotor. Upon completion of the dynamic balancing of the CT scanner rotor a new an innovative way …
Health Monitoring Of Cracked Rotor Systems Using External Excitation Techniques, Adam C. Wróblewski
Health Monitoring Of Cracked Rotor Systems Using External Excitation Techniques, Adam C. Wróblewski
ETD Archive
Cracked rotors present a significant safety and loss hazard in nearly every application of modern turbomachinery. This thesis focuses on the health monitoring, modeling, and analysis of machines with transverse breathing cracks, which open and close due to the self-weight of the rotor. After considering the modeling of cracked rotors, the thesis investigates an active structural health monitoring approach, focusing on the application of an active magnetic actuator to apply a specially designed external force excitation to the rotating shaft. Extensive experimental data has been collected and analyzed utilizing advanced diagnostic techniques. The presented results demonstrate that the use of …