Case history of failure detection in the dynamic structure of a factory overspeed test facility using 'moving picutures'

摘要

Fault detection and diagnosis of structure vibration become important. For getting detailed information on the dynamic behaviour of complex dynamic structures however a large amount of measured data is needed. The comparison and reconstruction of the vibration modes of a complet structure from vibration plots as Bode plots and polar plots allown is quite difficult. To solve such problem the use of a simulation program which shows the place and the motion of all measured points in one picture is helpful. Especially the relative motion between the measured points can easily be seen. The "Moving Pictures" method makes it easier to find a potential problem areas.