Real Time Investigation Of Rotating Objects Using ESPI System

Boxiang Lu; Harald Abendroth; Heiner Eggers; Eckhardt Ziolkowski; Xiangyang Yang

doi:10.1117/12.950250

31 March 1989 Real Time Investigation Of Rotating Objects Using ESPI System

Boxiang Lu, Harald Abendroth, Heiner Eggers, Eckhardt Ziolkowski, Xiangyang Yang

Proceedings Volume 1026, Holography Techniques and Applications; (1989) https://doi.org/10.1117/12.950250
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

Many kinds of vibration, of great concern, occur to rotating structures such as turbines, propellers and brake disks. This paper describes how an electronic speckle patter' interferometry (ESPI) system is combined with the image derotator for the real time investigation of rotating objects. The ESPI + Derotator system is now capable of replacing holographic counterpart in most rotating structure measurements in industry with dramatic improvements in convenience and simplicity of use. A double pulsed Ruby laser illuminates the rotating objects at two positions of its vibration cycle respectively, and a reflective image derotator is used to compensate the rotational motion of the object. The speckle patterns between two laser pulses are correlated as a series of interferometric fringes, which give a picture of the dynamic vibration distribution on the surface of the rotating objects. Such information is valuable for the optimal design or investigation of noise generation.

Citation Download Citation

Boxiang Lu, Harald Abendroth, Heiner Eggers, Eckhardt Ziolkowski, and Xiangyang Yang "Real Time Investigation Of Rotating Objects Using ESPI System", Proc. SPIE 1026, Holography Techniques and Applications, (31 March 1989); https://doi.org/10.1117/12.950250

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