Planar acoustic metamaterials with the active control of acoustic impedance
Project ID:GA13-10365S
Provider:Czech Science Foundation
Period:Feb 01, 2013 - Dec 31, 2015
Recipient -- coordinator:Technical University of Liberec -- Doc. Ing. Pavel Mokrý, Ph.D.
Co-recepient(s) / PI(s):Institute of Plasma Physics, Czech Academy of Sciences, Prague -- doc. RNDr. Miroslav Šulc, Ph.D.
Co-investigators from IPPP. Psota, R. Doleček, K. Steiger

Aims of the project: The proposed project focuses on a basic research of design tools and fundamental properties of planar acoustic metamaterials and a research of methods for control of their acoustic impedance in changing operational conditions. Acoustic tunable metamaterials will be realized as multilayer composite shells with piezoelectric elements. Active control of their acoustic impedance will be realized by connecting the piezoelectric elements to active electric shunt circuits with negative impedance converters or gyrators. Methods of adaptive piezoelectric shunt damping will be researched. Design of metamaterials with given acoustic impedance will be realized using Finite Element Method simulations. The acoustic properties of the realized metamaterials will be evaluated using acoustic transmission loss and acoustic absorption coefficient measurements. Static and dynamic displacements of metamerials produced by electric voltage will be measured using Digital Holographic Interferometry. The project results will be applicable in a design of noise shielding systems, sound-absorbing panels, etc.

Results:

Václavík J., Kodejška M., Mokrý P.: Wall-plug efficiency analysis of semi-active piezoelectric shunt damping systems. Journal of Vibration and Control 22 [11] (2016) 2582-2590. [ Abstract ] [ Link ]

Mokrý P.: Iterative method for solving the eikonal equation. Proceedings of SPIE 10151, Optics and Measurement International Conference 2016. Vol. 10151. Bellingham: SPIE, Society of Photo-Optical Instrumentation Engineers, 2016 - (Kovačičinová, J.), č. článku 101510Z. SPIE. ISBN 978-1-5106-0753-8. ISSN 0277-786X. [ Abstract ] [ Link ]
[OAM 2016, Optics and Measurement International Conference 2016. Liberec (CZ), 11.10.2016-14.10.2016]

Steiger K., Mokrý P., Václavík J., Márton P., Nečásek J., Psota P., Doleček R., Lédl V.: Potlačování emise hluku pomocí piezoelektrických prvků s řízenou tuhostí/kap.8/. Aplikace piezoelektrických prvků v mechanických a akustických soustavách. Liberec : VÚTS, a.s, 2015, s. 95-116. ISBN 978-80-87184-57-8 [ Abstract ]

Steiger K., Mokrý P.: Finite element analysis of the macro fiber composite actuator: macroscopic elastic and piezoelectric properties and active control thereof by means of negative capacitance shunt circuit. Smart Materials & Structures 24 [2] (2015) 025026-025026. [ Abstract ] [ Link ]

Mokrý P., Václavík J., Nečásek J., Steiger K., Psota P., Doleček R.: Noise transmission through active acoustic metamaterials in the negative elasticity regime. Proceedings of the 22nd International Congress on Sound and Vibration (ICSV22), 2015. Florence: International Institute of Acoustics and Vibration (IIAV), 2015, 2015 - (Crocker, M.; Pawelczyk, M.; Pedrielli, F.; Carletti, E.; Luzzi, S.), s. 1117-1125. ISBN 978-88-88942-48-3. ISSN 2329-3675. [ Abstract ] [ Link ]
[International Congress on Sound and Vibration (ICSV22)/22./. Florence (IT), 12.07.2015-16.07.2015]

Mokrý P., Psota P., Steiger K., Václavík J., Doleček R., Lédl V., Šulc M.: Noise suppression in curved glass shells using macro-fiber-composite actuators studied by the means of digital holography and acoustic measurements. AIP ADVANCES 5 [2] (2015) 27132-27132. [ Abstract ] [ Link ]

Pintr P., Vápenka D., Mašek M.: Objev nové ELL proměnné hvězdy v souhvězdí Kentaura a možnost detekce nových exoplanet pomocí dalekohledu FRAM. Jemná mechanika a optika 60 [2] (2015) 65-68. [ Link ]

Psota P., Lédl V., Vojtíšek P., Doleček R., Kopecký V.: 3D form inspection of grinded optical surfaces by digital holography. Proceedings of SPIE Vol. 9442: Optics and Measurement Conference 2014. Vol. 9442. Bellingham : SPIE-INT SOC OPTICAL ENGINEERING, 2015 - (Kovačičinová, J.; Vít, T.), s. 944218-944218 ISBN 978-1-62841-557-5. ISSN 0277-786X. - (SPIE). [ Abstract ] [ Link ]
[Optics and Measurement Conference 2014 (OaM 2014). Liberec (CZ), 07.10.2014-10.10.2014]

Psota P., Lédl V., Vojtíšek P., Václavík J., Doleček R., Mokrý P.: Advanced time average holographic method for measurement in extensive vibration amplitude range with quantitative single-pixel analysis. Proceedings of SPIE Vol. 9508: Holography: Advances and Modern Trends IV. Vol. 9508. Bellingham : SPIE-INT SOC OPTICAL ENGINEERING, 2015 - (Hrabovsky, M.; Sheridan, J.; Fimia, A.), 95080N-95080N ISBN 978-1-62841-629-9. ISSN 0277-786X. - (SPIE). [ Abstract ] [ Link ]
[Conference on Holography - Advances and Modern Trends IV. Prague (CZ), 15.04.2015-16.04.2015]

Kodejška M., Mokrý P., Steiger K., Václavík J., Márton P., Nečásek J.: Adaptivní systémy pro potlačení přenosu vibrací pomocí piezoelektrických prvků s řízenou tuhostí/kap.7/. Aplikace piezoelektrických prvků v mechanických a akustických soustavách. Liberec : VÚTS, a.s, 2015, s. 75-93. ISBN 978-80-87184-57-8 [ Abstract ]

Mokrý P., Steiger K., Václavík J., Psota P., Doleček R., Márton P., Kodejška M., Černík M.: Noise shielding using active acoustic metamaterials with electronically tunable acoustic impedance. Proceedings of INTERNOISE2014. Toowong DC QLD 4066 : The Australian Acoustical Society, 2014 - (Davy, J.; Don, C.; McMinn, T.; Dowsett, L.; Broner, N.; Burgess, M.), s. 1-9 ISBN 978-0-909882-04-4. [ Abstract ]
[Internoise 2014 Conference. Melbourne (AU), 16.11.2014-19.11.2014]

Steiger K., Mokrý P., Václavík J., Kodejška M.: Wide Frequency Range Noise Shield using Curved Glass Plates with Piezoelectric Macro Fiber Composite Actuators. 2014 Joint IEEE International Symposium on the Applications of Ferroelectrics, International Workshop on Acoustic Transduction Materials and Devices & Workshop on Piezoresponse Force Microscopy (ISAF/IWATMD/PFM). State College, PA : IEEE, 2014, s. 1-4. - (IEEE). [ Abstract ] [ Link ]
[2014 Joint IEEE International Symposium on the Applications of Ferroelectrics, International Workshop on Acoustic Transduction Materials and Devices & Workshop on Piezoresponse Force Microscopy (ISAF/IWATMD/PFM). State College, PA (US), 12.05.2014-16.05.2014]

Václavík J., Kodejška M., Mokrý P.: Wall-plug efficiency analysis of semi-active piezoelectric shunt damping systems. Journal of Vibration and Control 20 [-] (2014) "1077546314548910"-"1077. [ Abstract ] [ Link ]