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Proceedings Paper

Development of standard measurement chain for full-field optical strain measurement methods
Author(s): Leszek Salbut; Malgorzata Kujawinska; Eann Patterson; Erwin Hack; Richard Burguete; Maurice Patrick Whelan; David A. Mendels
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Paper Abstract

Optical techniques for full-field displacement/strain measurement are a powerful set of tools for use in defining the performance, design optimization, reliability and safety of various types of components, products and machines. The quality of the measurement data generated by optical techniques is strongly dependent on the instrumentation and procedures. Thus, there is a significant need to develop standardized tests that are applicable across the spectrum of optical techniques of strain measurement. This requires the description of a common standard measurement chain including: (1) definition of standard physical and virtual materials; (2) gathering experimental or simulated primary data (fringe/image map); (3) deconvolution phase maps from these data (numerical procedures); (4) calculation of required physical quantities from phase maps (numerical procedures including data scaling). This scheme supports a calibration process for both instrumentation and procedures. Validation of this general methodology was performed using an example of displacement data gathered by grating interferometry followed by data processing scheme.

Paper Details

Date Published: 2 August 2004
PDF: 10 pages
Proc. SPIE 5532, Interferometry XII: Applications, (2 August 2004); doi: 10.1117/12.560939
Show Author Affiliations
Leszek Salbut, Warsaw Univ. of Technology (Poland)
Malgorzata Kujawinska, Warsaw Univ. of Technology (Poland)
Eann Patterson, Univ. of Sheffield (United Kingdom)
Erwin Hack, EMPA (Switzerland)
Richard Burguete, Airbus UK (United Kingdom)
Maurice Patrick Whelan, Joint Research Ctr. (Italy)
David A. Mendels, National Physical Lab (United Kingdom)

Published in SPIE Proceedings Vol. 5532:
Interferometry XII: Applications
Wolfgang Osten; Erik Novak, Editor(s)

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