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Non Contact Vibration Measurements on Parabolic Surface Antenna

Non Contact Vibration Measurements on Parabolic Surface Antenna Received: 29.03.2013 In this paper it is present a non contact method for 3D Accepted: 16.04.2013 measurements on parabolic surface antenna. In order to obtain modal parameters and modal shapes of a parabolic surface antenna a Keywords: Vibration Microflown USP (Ultimate Sound Probe) is used. Microflown sensors are measurements, parabolic antenna, close to antenna and can be used for the non contact measurement of the sensors. normal component of the structural velocity. 1.Introduction One of the difficult problems at vibration measurement for lightweight structures, such as the reflector parabolic antenna, is that by placing a seismic accelerometer on a structure it is appear a structural change with deviations of frequency and modal shapes of that structure. Possible solutions to remove this inconvenience are related to the use of micro seismic accelerometers very lightweight, few tens of grams, or use of optics, in particular those with lasers and possibility of the scan of the entire structures. In both cases equipment are expensive, especially those with laser scanning. 2. The principle of Microflown Sensors The basic principle of Microflown sensors is the same as the hot wire anemometer. The wire heated to a temperature of between 200°C and 400°C changes its http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annals of West University of Timisoara - Physics de Gruyter

Non Contact Vibration Measurements on Parabolic Surface Antenna

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References (5)

Publisher
de Gruyter
Copyright
Sciendo is a De Gruyter company © 2018. ALL RIGHTS RESERVED Powered by PubFactory
ISSN
1224-9718
DOI
10.1515/awutp-2015-0109
Publisher site
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Abstract

Received: 29.03.2013 In this paper it is present a non contact method for 3D Accepted: 16.04.2013 measurements on parabolic surface antenna. In order to obtain modal parameters and modal shapes of a parabolic surface antenna a Keywords: Vibration Microflown USP (Ultimate Sound Probe) is used. Microflown sensors are measurements, parabolic antenna, close to antenna and can be used for the non contact measurement of the sensors. normal component of the structural velocity. 1.Introduction One of the difficult problems at vibration measurement for lightweight structures, such as the reflector parabolic antenna, is that by placing a seismic accelerometer on a structure it is appear a structural change with deviations of frequency and modal shapes of that structure. Possible solutions to remove this inconvenience are related to the use of micro seismic accelerometers very lightweight, few tens of grams, or use of optics, in particular those with lasers and possibility of the scan of the entire structures. In both cases equipment are expensive, especially those with laser scanning. 2. The principle of Microflown Sensors The basic principle of Microflown sensors is the same as the hot wire anemometer. The wire heated to a temperature of between 200°C and 400°C changes its

Journal

Annals of West University of Timisoara - Physicsde Gruyter

Published: Dec 1, 2013

Keywords: Materials Sciences; Modeling and Simulations; Physics; Theoretical and Mathematical Physics; Condensed Matter Physics; Medical Physics

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