Evaluation of the vibrational behaviour of a rotating disk by optical tip-clearance measurements

Iker García; Joseba Zubia; Josu Beloki; Jon Arrue; Joel Villatoro

doi:10.1117/12.2185273

22 June 2015 Evaluation of the vibrational behaviour of a rotating disk by optical tip-clearance measurements

Iker García, Joseba Zubia, Josu Beloki, Jon Arrue, Joel Villatoro

Proceedings Volume 9525, Optical Measurement Systems for Industrial Inspection IX; 95251Z (2015) https://doi.org/10.1117/12.2185273
Event: SPIE Optical Metrology, 2015, Munich, Germany

Abstract

The results of an experimental investigation on the vibrational behaviour of a rotating disk are reported. This disk is a prototype that simulates a component of an aircraft engine. The air flow through the gap between the edge of the disk and the casing, produced because of the pressure difference between the upstream and downstream parts of the disk, might force the disk to flutter under certain circumstances. This situation is simulated in a wind tunnel. The main goal of the tests is to evaluate the vibrational behaviour of a rotating disk, obtaining the correspondence between the vibration frequencies of the disk and the pressure differences when the disk is rotating at diverse speeds. An innovative noncontact technique is utilised, which employs three optical sensors that are angularly equidistributed on the casing of the wind tunnel. In order to verify the results given by the optical sensors, a strain gauge was mounted on the surface of the rotating disk. The results show a perfect agreement between the vibration frequencies detected by both kinds of sensors, proving that the combination of both allows the calculation of the nodal diameter corresponding to the vibration of the disk.

Citation Download Citation

Iker García, Joseba Zubia, Josu Beloki, Jon Arrue, and Joel Villatoro "Evaluation of the vibrational behaviour of a rotating disk by optical tip-clearance measurements", Proc. SPIE 9525, Optical Measurement Systems for Industrial Inspection IX, 95251Z (22 June 2015); https://doi.org/10.1117/12.2185273

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