Combining Laue microdiffraction and digital image correlation for improved measurements of the elastic strain field with micrometer spatial resolution

J. Petit, M. Bornert, F. Hofmann, O. Robach, J. S. Micha, O. Ulrich, C. Le Bourlot, D. Faurie, A. M. Korsunsky, O. Castelnau

Research output: Contribution to journalConference articlepeer-review

Abstract

The X-ray Laue microdiffraction technique, available at beamline BM32 on the synchrotron ESRF, is ideally suited for probing the field of elastic strain (and associated stress) in deformed polycrystalline materials with a micrometric spatial resolution. We show that using Digital Image Correlation for measuring Laue pattern distortions between two mechanical states improves significantly the estimate of elastic strain increment. The potentiality of this new Laue-DIC method is illustrated on an elastically bent Si single crystal, for which the measured elastic strain deviates not more than 10-5 from the theoretical strain distribution provided by standard solutions.

Original languageEnglish
Pages (from-to)133-143
Number of pages11
JournalProcedia IUTAM
Volume4
DOIs
Publication statusPublished - 1 Jan 2012
Externally publishedYes
EventIUTAM Symposium on Full-Field Measurements and Identification in Solid Mechanics - Cachan, France
Duration: 4 Jul 20118 Jul 2011

Keywords

  • Digital images correlation (DIC)
  • Four point bending
  • Microscopic analysis
  • Stress field
  • X-ray Laue microdiffraction

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