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Frequency Shifted Digital Holography for the Measurementof Vibration with Very Small Amplitudes
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SYSNO ASEP 0357974 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Frequency Shifted Digital Holography for the Measurementof Vibration with Very Small Amplitudes Author(s) Lédl, Vít (UFP-V) RID
Václavík, Jan (UFP-V) RID
Doleček, R. (CZ)
Kopecký, V. (CZ)Source Title AIP Conference Proceedings 9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course, 1253. - Melville : American Institute of Physics, 2010 / Tomasini E.P. - ISSN 0094-243X - ISBN 978-0-7354-0802-9 Pages s. 415-419 Number of pages 5 s. Publication form web - web Action International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course/9th./ Event date 22.06.2010-25.06.2010 VEvent location Ancona Country IT - Italy Event type WRD Language eng - English Country US - United States Keywords small vibration amplitudes ; frequency shifted ; digital holography Subject RIV BH - Optics, Masers, Lasers R&D Projects 1QS100820502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000283528800047 Annotation A method for measurements of nanometer-scale vibrations based on frequency shifted time average digital holographic interferometry employing the principle of the phase shifting technique is presented. This approach allows a reduction of noise and results in a higher sensitivity. The method has been applied to study the normalized vibration amplitude and the structure of vibration modes of piezoelectric transformers and actuators. In addition, quantitative information on the vibration amplitudes has been obtained in some cases. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2011
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