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Type of publication: Straipsnis recenzuojamoje užsienio tarptautinės konferencijos medžiagoje / Article in peer-reviewed foreign international conference proceedings (P1d)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Vasiljev, Piotr;Bareikis, Regimantas;Borodinas, Sergejus;Struckas, Arūnas;Kasperovičienė, Jūratė
Title: The investigation of hollow hemisphere-shape actuator
Is part of: Actuator 16 : 15th International Conference on New Actuators & 9th International Exhibition on Smart Actuators and Drive Systems, 13–15 June 2016, Bremen, Germany : conference proceedings / editor Hubert Borgmann Bremen : MESSE BREMEN WFB Wirtschaftsförderung Bremen GmbH, 2016
Extent: p. 414-418
Date: 2016
Keywords: Bio-Fuel;Ultrasonic reactor;Algae
ISBN: 9783933339263
Abstract: In this paper we are investigating two possible excitation methods of how to simultaneously excite two vibration types – longitudinal and radial. The first method – is to glue the PZT element to a specifically prepared surface area of the hemisphere. The second way is to connect the hemisphere to a Langevin type longitudinal transducer. For both cases we did modeling to find eigen frequency as well as harmonic analysis in a lower ultrasonic frequency range (20-30kHz). Impedance- frequency characteristic and mechanical vibration amplitudes are measured around resonant frequency. Comparative tests for both systems are performed using proposed actuators for algae ultra-sonication for bio-fuel production. We have determined the relation of longitudinal and radial waves that are traveling from the excitation source to a hemisphere opposite end. The prototypes of proposed systems are designed and manufactured. Comparative algae destruction results are obtained
Affiliation(s): Gamtos tyrimų centras
Vilniaus Gedimino technikos universitetas
Vytauto Didžiojo universitetas
Švietimo akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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