Experimental investigation of localized phenomena using digital image correlation

Abstract

This paper is dedicated to the use of enriched discretization schemes in the context of digital image correlation. The aim is to capture and evaluate strong or weak discontinuities of a displacement field directly from digital images. An analysis of different enrichment performances is provided. Two examples of strain localization illustrate the discussion.

Keywords:

• photomechanics
• deformation properties
• image analysis
• localized states
• mechanics of materials
• plasticity

Acknowledgements

The authors acknowledge useful discussions with Profs. A. Benallal and J. Lemaitre. This work is part of a project (‘PHOTOFIT’) funded by the French Agence Nationale de la Recherche.