Dynamic characterization of a centrifugal compressor rotor by a laser scanning vibrometer

Gianluca L. Rossi; Claudio Santolini; M. Giachi; S. Generosi

doi:10.1117/12.248651

23 August 1996 Dynamic characterization of a centrifugal compressor rotor by a laser scanning vibrometer

Gianluca L. Rossi, Claudio Santolini, M. Giachi, S. Generosi

Proceedings Volume 2868, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1996) https://doi.org/10.1117/12.248651
Event: Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 1996, Ancona, Italy

Abstract

The dynamic behavior of a 3D impeller (1100 mm diameter) has been modelled by means of a standard FEM code (ANSYS) and experimentally validated using a laser scanning vibrometer based measurement technique. The theoretical finite element model has been previously developed. Attempts made by using classical measuring techniques has not allowed to obtain the low frequency cyclic modes calculated. Those modes have been obtained using a laser scanning vibrometer. Sine sweep to detect frequencies and sine excitation at resonance frequencies, in order to improve the accuracy of the modal shape, have been used. The keys of success was the ability of the laser vibrometer to detect very low vibration amplitudes (of the order of nanometers) with a high spatial resolution, inside an industrial environment, in very low testing time, all fundamentals for this application. The experimental and numerical activity presented in this work has been carried out from Nuovo Pignone together with the University of Ancona with the final purpose of establishing a new fast procedure to identify, in production industrial environment, the dynamic behavior of large dimensions impellers for centrifugal compressors.

Citation Download Citation

Gianluca L. Rossi, Claudio Santolini, M. Giachi, and S. Generosi "Dynamic characterization of a centrifugal compressor rotor by a laser scanning vibrometer", Proc. SPIE 2868, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (23 August 1996); https://doi.org/10.1117/12.248651

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available