Affiliation:
1. Technical University of Liberec
2. VÚTS, a.s.
Abstract
The sample of a piezoelectric semi-active shunt damping material is analyzed inside an acoustic tube. The measurement of reflected and transmitted acoustic wave through the sample is realized using 4-microphone measurement method. Acoustic properties of the sample with the emphasis on acoustic transmissibility are analyzed. The composite piezoelectric sample comprising of a piezoelectric material connected to a linear shunting circuit is described, also the multimicrophone measurement methods are described in detail and the results are discussed in context of semi-active sound damping.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference9 articles.
1. J.S. Bolton, T. Yoo, O. Olivieri, Measurement of Normal Incidence Transmission Loss and Other Acoustical Properties of Materials Placed in a Standing Wave Tube, Brüel & Kjær Technical Review No. 1, ISSN: 0007–2621.
2. M. Date, M. Kutani, S. Sakai, Electrically controlled elasticity utilizing piezoelectric coupling, Journal of Applied Physics 87 (2) (2000) 863–868, doi: 10. 1063/1. 371954.
3. S. Behrens, A. J. Fleming, S. O. R. Moheimani, Electromagnetic shunt damping, Proceedings of the 2003 IEEE/ASME AIM 2003, VOLS 1 AND 2, pages: 1145-1150, ISBN: 0-7803-7759-1.
4. M. Černík, P. Mokrý, Sound reflection in an acoustic impedance tube terminated with a loudspeaker shunted by a negative impedance converter, Smart Materials and Structures, Volume 21, Issue 11 (November 2012), ISSN: 0964-1726.
5. M. Kašpárek, M. Černík, Experimental verification of an Electromagnetic Shunt Damping circuit parameters producing an anechoic surface inside an acoustic tube, Proceedings of the 2016 17th ICCC 2016, DOI: 10. 1109/CarpathianCC. 2016. 7501116.