Applicability of Optical Geometric Differentiation for Time-average Geometric Moiré

:  Optical experimental method for analysis of derivatives of dynamic displacements from patterns of time‐average moiré fringes is proposed in this paper. Derived analytical relationships for one‐dimensional optical model are validated for two‐dimensional elastic structures performing in‐plane vibra...

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Bibliographic Details
Published in:Strain 2006-08, Vol.42 (3), p.173-179
Main Authors: Ragulskis, M., Saunoriene, L.
Format: Article
Language:English
Subjects:
geometric differentiation
moiré of moiré
time-average geometric moiré
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Summary::  Optical experimental method for analysis of derivatives of dynamic displacements from patterns of time‐average moiré fringes is proposed in this paper. Derived analytical relationships for one‐dimensional optical model are validated for two‐dimensional elastic structures performing in‐plane vibrations. The fact that digital image filtering techniques are normally required for the identification of time‐averaged super‐fringes does not lessen the practical value of the proposed method.
ISSN:0039-2103
1475-1305
DOI:10.1111/j.1475-1305.2006.00273.x