2012 Fiscal Year Final Research Report
Study on frequency-controllable sound absorbing material usingpiezoelectric polymers shunted with the electric circuit
| Project/Area Number |
23760545
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Architectural environment/equipment
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
AKASAKA Shuichi 東京工業大学, 大学院・理工学研究科, 助教 (00501066)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 音 / 振動環境 / 吸音材料 |
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| Research Abstract |
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..
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