Piezoelectric actuators for fluid-flow control

Louis N. Cattafesta III; Sanjay Garg; Anthony E. Washburn

doi:10.1117/12.274658

23 May 1997 Piezoelectric actuators for fluid-flow control

Louis N. Cattafesta III, Sanjay Garg, Anthony E. Washburn

Proceedings Volume 3044, Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies; (1997) https://doi.org/10.1117/12.274658
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

Abstract

The characteristics of cantilever piezoelectric actuators are investigated both theoretically and experimentally. The type of actuators considered consist of a single sheet of piezoceramic material bounded to a shim--termed a `unimorph' design. A theoretical model, based on beam theory, is developed to predict the static and dynamic behavior of the actuator. The model predictions compare favorably to measurements of the actuator transfer function. A sample application to noise reduction of flow-induced cavity oscillations at low subsonic speeds is described. Use of the actuators in an open-loop control system resulted in 18 and 25 dB attenuation in the broadband and primary tone sound pressure levels, respectively.

Citation Download Citation

Louis N. Cattafesta III, Sanjay Garg, and Anthony E. Washburn "Piezoelectric actuators for fluid-flow control", Proc. SPIE 3044, Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies, (23 May 1997); https://doi.org/10.1117/12.274658

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