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Proceedings Paper

Uncertainty evaluation of strain and strain rate measurements by ESPI during a tensile test
Author(s): Bruno Guelorget; Manuel François; Guillaume Montay; Laurent Daniel; Jian Lu
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Paper Abstract

Localization of plastic strain has been studied by measuring strain and strain rate during tensile test1. Pictures were continuously recorded during the experiment and in-plane Electronic Speckle Pattern Interferometry (ESPI) pictures were generated afterwards, by subtracting couples of images. A square grid of 3 mm separation was drawn on the specimen to determine the true stress-true strain curve, while fringe patterns gave an access to relative displacements. Strain, average strain and strain rate were deduced. An uncertainty evaluation on these parameters was carried out applying the so-called law of propagation of uncertainties (ISO 07-0202).

Paper Details

Date Published: 15 September 2006
PDF: 6 pages
Proc. SPIE 6341, Speckle06: Speckles, From Grains to Flowers, 63412K (15 September 2006); doi: 10.1117/12.695840
Show Author Affiliations
Bruno Guelorget, Institut Charles Delaunay, Univ. de Technologie de Troyes, CNRS (France)
Manuel François, Institut Charles Delaunay, Univ. de Technologie de Troyes, CNRS (France)
Guillaume Montay, Institut Charles Delaunay, Univ. de Technologie de Troyes, CNRS (France)
Laurent Daniel, Institut Charles Delaunay, Univ. de Technologie de Troyes, CNRS (France)
Jian Lu, Hong Kong Polytechnic Univ. (Hong Kong China)


Published in SPIE Proceedings Vol. 6341:
Speckle06: Speckles, From Grains to Flowers
Pierre Slangen; Christine Cerruti, Editor(s)

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