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Optical Engineering

Determination of strains from fringe patterns using space-frequency representations
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Paper Abstract

A new approach to the retrieval of fringe pattern frequency information is introduced. In this approach, strain information is extracted from fringe patterns by using either short-time Fourier transforms or wavelets. Space-frequency representation of the fringe signals is introduced as a tool to get the space localization of the strains. The idea of spectral energy density maxima to define the instantaneous frequency (ridge points) is presented. Examples of application are given. Results show that this approach provides an excellent tool for pattern analysis.

Paper Details

Date Published: 1 November 2003
PDF: 12 pages
Opt. Eng. 42(11) doi: 10.1117/1.1613276
Published in: Optical Engineering Volume 42, Issue 11
Show Author Affiliations
Cesar A. Sciammarella, Illinois Institute of Technology (United States)
Taeeui Kim, Illinois Institute of Technology (United States)

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