Effect of shunted piezoelectric materials on increasing sound transmission loss

Mehdi Ahmadian; Kristina M. Jeric

doi:10.1117/12.432710

2 July 2001 Effect of shunted piezoelectric materials on increasing sound transmission loss

Mehdi Ahmadian, Kristina M. Jeric

Proceedings Volume 4331, Smart Structures and Materials 2001: Damping and Isolation; (2001) https://doi.org/10.1117/12.432710
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

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.

Citation Download Citation

Mehdi Ahmadian and Kristina M. Jeric "Effect of shunted piezoelectric materials on increasing sound transmission loss", Proc. SPIE 4331, Smart Structures and Materials 2001: Damping and Isolation, (2 July 2001); https://doi.org/10.1117/12.432710

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