Exact vibration amplitude derivative measurement with TV shearography

An electronic speckle shearing interferometer, also known as a TV shearometer, has been used to measure the exact vibration amplitude derivative of a vibrating circular steel plate. The technique is based on a heterodyne interferometer and uses fringe analysis methods appropriate when less than one...

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Bibliographic Details
Published in:Measurement science & technology 1996-06, Vol.7 (6), p.918-921
Main Authors: Valera, J D R, Jones, J D C, Løkberg, O J
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Measurement and testing methods
Measurement methods and techniques in continuum mechanics of solids
Physics
Solid mechanics
Structural and continuum mechanics
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Summary:An electronic speckle shearing interferometer, also known as a TV shearometer, has been used to measure the exact vibration amplitude derivative of a vibrating circular steel plate. The technique is based on a heterodyne interferometer and uses fringe analysis methods appropriate when less than one fringe is observed on the vibrating object. (Abstract quotes from original text)
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/7/6/010