Abstract

This paper reports on the application of Electronic Speckle Pattern Interferometry (ESPI) technique in vibration measurement of turbine blading. Using the time-averaged mode of ESPI, the first six modes of a turbocharger blade with airfoil profile were identified. The effect of the complicated profile of the blade was established by studying simplified model blades. Coupled modes were identified and successfully separated. Experimental results are compared with those obtained using finite element analysis.

Volume Subject Area:
Modal Analysis and Rotating Machines
Topics:
Electronic speckle pattern interferometry, Turbines, Vibration analysis, Blades, Airfoils, Finite element analysis, Turbochargers, Vibration measurement
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Copyright © 1995 by The American Society of Mechanical Engineers
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