Study on frequency-controllable sound absorbing material usingpiezoelectric polymers shunted with the electric circuit

压电材料与电感分流作为电路示出了在电谐振频率下的声音吸收，所述电谐振频率由样品的电容和分流的电感确定。该材料是一种很有前途的频率可控吸声材料。从一个正常的入射声吸收系数和振动振幅的同时测量，我们发现，吸声特性取决于存储和损耗模量的变化由分流电路。

Piezoelectric materials shunted with an inductance as an electrical circuit showed a sound absorption at the electrical resonance frequency determined from a capacitance of a sample and the shunted inductance. This material is promising frequency-controllable sound absorbing materials. From a simultaneous measurement of a normal incident sound absorption coefficient and a vibration amplitude, we revealed that sound absorbing characteristics depend on a change in storage and loss modulus by shunted electric circuits..