Vibration Prediction and Quality Control of a Centrifugal Impeller

Michael Hudson, Geoffrey H. Ballans, Soritis Georgomanos
1993 Volume 3B: General   unpublished
A multi-disciplinary approach was used to investigate and control the vibration of a 1.7MW gas turbine impeller. Three techniques were used. First, determination of natural frequencies by Spectral Analysis of an impulse on the impeller. Second, Electronic Speckle-pattern Interferometry (ESPI) to assertain the modal shape of each natural frequency. Finally, 3-dimensional finite element analysis (3DFEA) of the whole impeller. The analyses were synthesized to give an accurate determination of
more » ... termination of modal shapes and frequencies at test conditions and validate the 3DFEA. Effect of modifications could be predicted with confidence by the 3DFEA.
doi:10.1115/93-gt-263 fatcat:kcgsv7l3rrcvpnplpf4qfb6zqy