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Volume 3B: General
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 ofdoi:10.1115/93-gt-263 fatcat:kcgsv7l3rrcvpnplpf4qfb6zqy