เงียบท่อพริ้งอิเล็กทรอนิกส์โดยใช้ยางอิเล็กทริกตัวกระตุ้นZhenbo Lu, 1, มาร์โก 1 เทมาเส็กห้องปฏิบัติการของมหาวิทยาลัยแห่งชาติสิงคโปร์ สิงคโปร์ ภาควิชาวิศวกรรมเครื่องกลวิศวกรรมไดรฟ์1, สถาบัน สิงคโปร์ tslluz@nus.edu.sg, hareesh@u.nus.edu, tslcyd@nus.edu.sg, keithfoo@gmail.com, tslmd@nus.edu.sg, mpezhuj@nus.edu.sg บทคัดย่ออะคูสติกที่มีลักษณะพริ้งจะนำเสนอในบทความนี้ An electronically tunable duct silencer using
dielectric elastomer actuators
Zhenbo Lu,1,a) Hareesh Godaba,2 Yongdong Cui,1 Choon Chiang Foo,3
Marco Debiasi,1 and Jian Zhu2
1
Temasek Laboratories, National University of Singapore, 5A Engineering Drive 1, #09-02,
Singapore 117411, Singapore 2
Department of Mechanical Engineering, National University of Singapore, 9 Engineering
Drive 1, Singapore 117576, Singapore 3
Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis,
Singapore 138632, Singapore
tslluz@nus.edu.sg, hareesh@u.nus.edu, tslcyd@nus.edu.sg, keithfoo@gmail.com,
tslmd@nus.edu.sg, mpezhuj@nus.edu.sg
Abstract: A duct silencer with tunable acoustic characteristics is presented
in this paper. Dielectric elastomer, a smart material with lightweight,
high elastic energy density and large deformation under high
direct current/alternating current voltages, was used to fabricate this
duct silencer. The acoustic performances and tunable mechanisms of
this duct silencer were experimentally investigated. It was found that all
the resonance peaks of this duct silencer could be adjusted using external
control signals without any additional mechanical part. The physics
of the tunable mechanism is further discussed based on the electromechanical
interactions using finite element analysis. The present
promising results also provide insight into the appropriateness of the
duct silencer for possible use as next generation acoustic treatment
device to replace the traditional acoustic treatment.
VC 2015 Acoustical Society of America
[SS]
Date Received: April 16, 2015 Date Accepted: August 12, 2015
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