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Proceedings Paper

Evaluation of displacement derivatives by direct manipulation of interferograms
Author(s): Massimo Facchini; Paolo Zanetta; Daniel Albrecht
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Paper Abstract

Optical interferometric techniques are very fascinating tools for a full-field quantitative evaluation of displacements. While in some applications this information is sufficient, in many cases it is necessary to determine stresses that arise in the inspected object. These quantities are closely related to deformation and can be obtained from the partial derivatives of displacement. In this paper maps of displacement derivatives are retrieved by a direct manipulation of interferograms obtained with the phase-shifting method. Three main advantages are thus achieved: no need of prior displacement evaluation, no need of unwrapping procedures, short processing time.

Paper Details

Date Published: 30 November 1994
PDF: 10 pages
Proc. SPIE 2342, Interferometry '94: Photomechanics, (30 November 1994); doi: 10.1117/12.195489
Show Author Affiliations
Massimo Facchini, Commission of the European Communities (Italy)
Paolo Zanetta, Commission of the European Communities (Italy)
Daniel Albrecht, Commission of the European Communities (Italy)

Published in SPIE Proceedings Vol. 2342:
Interferometry '94: Photomechanics
Ryszard J. Pryputniewicz; Jacek Stupnicki, Editor(s)

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