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Proceedings Paper

Dynamic measurement of strain in test specimen by fringe projection
Author(s): Andrea León-Huerta; Amalia Martinez; Juan Antonio Rayas; Raúl Cordero
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Paper Abstract

We use the projected fringes technique to follow the changes induced in the topography of metallic sample sheets subjected to uniaxial tensile tests. Since in-plane strains are associated with out-of-plane deformations, the monitoring of thickness variation of the tensile specimens can be used to detect necking and shear band formation. A sequence of images of the fringe pattern was captured and processed by means of the Fourier transform technique. We measured the material behavior in the elastic and plastic zones during its elongation until fracture took place. We present experimental results for stainless and hot rolled steel sheets.

Paper Details

Date Published: 11 August 2008
PDF: 8 pages
Proc. SPIE 7063, Interferometry XIV: Techniques and Analysis, 70631E (11 August 2008); doi: 10.1117/12.798278
Show Author Affiliations
Andrea León-Huerta, Ctr. de Investigaciones en Óptica (Mexico)
Amalia Martinez, Ctr. de Investigaciones en Óptica (Mexico)
Juan Antonio Rayas, Ctr. de Investigaciones en Óptica (Mexico)
Raúl Cordero, Univ. de Santiago de Chile (Chile)

Published in SPIE Proceedings Vol. 7063:
Interferometry XIV: Techniques and Analysis
Joanna Schmit; Katherine Creath; Catherine E. Towers, Editor(s)

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