ACTUATOR 2016 Manuscript P 02


Author: Hubert Borgmann
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Pages: 5
Language: English
Publication date: 01/06/2016
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Manuscript P 02 published in Conference Proceedings ACTUATOR 2016
The Investigation of Hollow Hemisphere-Shape Actuator

P. Vasiljev1, R. Bareikis1,2, S. Borodinas1,2, A. Struckas1, J. Kasperoviciene3
1 Lithuanian University of Educational Sciences, Vilnius, Lithuania
2 Vilnius Gediminas Technical University, Vilnius, Lithuania
3 Institute of Botany, Vilnius, Lithuania

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.
El vendedor asume toda la responsabilidad de esta entrada.
Hubert Borgmann, MESSE BREMEN,
Project Manager ACTUATOR, International Conference and Exhibition on New Actuators and Drive Systems, Bremen, Germany, and Editor of the ACTUATOR Conference Proceedings (www.actuator.de)
Project Manager ITHEC, International Conference and Exhibition on Thermoplastic Composites, Bremen, Germany, and Editor of the ITHEC Conference Proceedings (www.ithec.de)

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