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Proceedings Paper

Effect of shunted piezoelectric materials on increasing sound transmission loss
Author(s): Mehdi Ahmadian; Kristina M. Jeric
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Paper Abstract

The application of electrically shunted piezoceramic materials (PZTs) for increasing transmission loss is studied. A test setup in an SAE J1400 facility is used to analyze the sound transmission loss due to a test plate with shunted PZTs, and to compare the results with an undamped plate and a plate with constrained-layer damping materials. The test results indicate that shunted PZTs can increase sound transmission loss by approximately 6 dB for a pure tune input at 162 Hz, and 7 dB for a broad band input of 10 - 10000 Hz. The test results further show that, compared to the constrained layer damping materials that are commonly used in the automotive industry, PZTs provide a substantially higher sound transmission loss-to-weight ratio.

Paper Details

Date Published: 2 July 2001
PDF: 8 pages
Proc. SPIE 4331, Smart Structures and Materials 2001: Damping and Isolation, (2 July 2001); doi: 10.1117/12.432710
Show Author Affiliations
Mehdi Ahmadian, Virginia Polytechnic Institute and State Univ. (United States)
Kristina M. Jeric, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 4331:
Smart Structures and Materials 2001: Damping and Isolation
Daniel J. Inman, Editor(s)

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