Noise reduction performance of smart panels incorporating piezoelectric shunt damping

Jaehwan Kim; Jin-Young Choi; Ran H. Cabell

doi:10.1117/12.475059

9 July 2002 Noise reduction performance of smart panels incorporating piezoelectric shunt damping

Jaehwan Kim, Jin-Young Choi, Ran H. Cabell

Proceedings Volume 4698, Smart Structures and Materials 2002: Industrial and Commercial Applications of Smart Structures Technologies; (2002) https://doi.org/10.1117/12.475059
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

Abstract

Performance test for transmitted noise reduction of smart panels is experimentally studied. Smart panel is a panel that is utilized a passive material at high frequencies and piezoelectric shunt damping at low frequencies. A multi-mode shunt damping is investigated by using the tuning method based on measured electrical impedance. Three configurations of smart panels are tested: single panel, single panel with sound absorbing material and double panel. The single panel consists of a host plate structure on which four piezoelectric patches are bonded and electrical shunt circuits are connected independently. The parameters for resonant shunt are determined by maximizing the dissipated energy through the circuit. The transmitted noise reduction performance of smart panels is tested in an acoustic tunnel. Sound absorbing material and air gap reduces the sound transmitted at the mid-frequency region effectively while the use of piezoelectric shunt damping can work at resonance frequencies of the panel structure. As a result, a remarkable noise reduction of 15dB was achieved in a wide band frequency region. The double panel exhibits better noise reduction than other panels. This approach was also applied to the structural acoustic problem of turbulent boundary layer (TBL) induced sound radiated from a panel, and results are discussed.

Citation Download Citation

Jaehwan Kim, Jin-Young Choi, and Ran H. Cabell "Noise reduction performance of smart panels incorporating piezoelectric shunt damping", Proc. SPIE 4698, Smart Structures and Materials 2002: Industrial and Commercial Applications of Smart Structures Technologies, (9 July 2002); https://doi.org/10.1117/12.475059

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