Low cost vibrating reed mechanical spectrometer using capacitive current detection

Among the various mechanical spectrometers over the whole frequency domain, the vibrating reed system is an interesting variant owing to its convenient frequency range, the possibility of exciting additional vibration modes and its ability to study thin films. In this paper a low cost set-up for suc...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 211; pp. 600 - 602
Main Authors Devos, P., De Batist, R., Cornelis, J., Brebels, A.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.1994
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Summary:Among the various mechanical spectrometers over the whole frequency domain, the vibrating reed system is an interesting variant owing to its convenient frequency range, the possibility of exciting additional vibration modes and its ability to study thin films. In this paper a low cost set-up for such a vibrating reed spectrometer is described. The basic idea of this resonance-measuring system consists of a pulse train excitation of the specimen and a capacitive current detection of the freely decaying vibrations. Both the hardware and software concepts of the system are described. An alternative numerical algorithm, based on a Hilbert transformation, to calculate the logarithmic decrement of a collected free decay is presented.
ISSN:0925-8388
1873-4669
DOI:10.1016/0925-8388(94)90576-2