Effect of shunted piezoelectric materials on increasing sound transmission loss

被引：7

作者：

Ahmadian, M ^{[1
]}

Jeric, KM ^{[1
]}

机构：

[1] Virginia Tech, Virginia Tech Transportat Inst, Dept Mech Engn, Adv Vehicle Dynam Lab, Blacksburg, VA 24061 USA

来源：

SMART STRUCTURES AND MATERIALS 2001: DAMPING AND ISOLATION | 2001年 / 4331卷

关键词：

D O I：

10.1117/12.432710

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

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.

引用

页码：273 / 280

页数：8

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