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Metrological Analysis of the DIC Ultimate Error Regime

  • M. Bornert
  • P. Doumalin
  • J.-C. Dupré
  • C. Poilâne
  • L. Robert
  • E. Toussaint
  • B. WattrisseEmail author
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

In DIC, the “ultimate error regime” corresponds to situations for which the shape function used to describe the material transformation perfectly matches the actual one. We propose to confront results obtained from numerically-shifted images with the predictions of theoretical models developed in the literature to describe bias and random error evolutions with respect to the imposed displacement. Results show the overall good predictions of these models but small deviations arise, mainly around integer values of imposed displacements for noisy images. These deviations are interpreted as the unrepresentativeness of the underlying hypotheses of the theoretical models in these particular cases.

Keywords

Digital image correlation Metrology Ultimate error 

Notes

Acknowledgements

On behalf of the Workgroup “Metrology” of the French CNRS research network 2519 “Mesures de Champs et Identification en Mécanique des Solides/Full-field measurements and identification in solid mechanics”. This work is dedicated to our colleague Laurent Robert who passed away in 2015.

References

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Copyright information

© The Society for Experimental Mechanics, Inc. 2017

Authors and Affiliations

  • M. Bornert
    • 1
  • P. Doumalin
    • 2
  • J.-C. Dupré
    • 2
  • C. Poilâne
    • 3
  • L. Robert
    • 4
  • E. Toussaint
    • 5
  • B. Wattrisse
    • 6
    Email author
  1. 1.Laboratoire Navier (UMR 8205), CNRS, ENPC, IFSTTARUniversité Paris-EstMarne-la-ValléeFrance
  2. 2.Institut P’, UPR 3346 CNRS, Université de Poitiers, SP2MIFuturoscope ChasseneuilFrance
  3. 3.Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAPCaenFrance
  4. 4.Université de Toulouse, Mines Albi, INSA, UPS, ISAE, ICA (Institut Clément Ader)AlbiFrance
  5. 5.Institut Pascal, UMR 6602, Université Blaise Pascal – IFMAAubièreFrance
  6. 6.LMGC, Univ. Montpellier, CNRSMontpellierFrance

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