Abstract
This chapter is devoted to the evaluation of damage with digital image correlation (DIC). This measurement technique provides displacement fields that can be used to tune material parameters of damage models. The potential of DIC for identification purposes is illustrated hereafter for simple 1D-type geometries in the context of quasi-brittle and ductile behaviors. Beams and frames as encountered in civil engineering application can be described through damage laws. The localization of damage at single points (lumped damage mechanics) and the resulting damage law can be determined very precisely based on dedicated versions of DIC incorporating the descriptive language of beam theory. At smaller scale, plasterboards (plaster core lined with paper) constitute another example of a structure (rather than a material), which can be described as damageable. Those cases will be analyzed in details.
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Acknowledgments
Many results reported in this chapter have been obtained thanks to the help of and discussions with A. Bouterf, R. Gras, N. Guerrero, M.-E. Marante, and R. Picon. Part of the work has been supported by ECOS-Nord/CNRS (project entitled “Detection and prediction of the damage state in frames subjected to earthquakes”), by Ile de France region (SESAME project entitled Plate-forme francilienne d’expérimentations mécaniques de 3 e génération and DICCIT project), and by Saint-Gobain Recherche.
This chapter has been reviewed by Profs. A. Dragon and J. Lemaitre. The authors would like to warmly thank them for their patience and help in improving the compuscript. Last, this chapter is dedicated to Prof. F. A. Leckie (1929–2013) with whom the authors discussed many issues presented herein.
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Hild, F., Roux, S. (2013). Evaluating Damage with Digital Image Correlation: B. From Physical to Mechanical Damage. In: Voyiadjis, G. (eds) Handbook of Damage Mechanics. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8968-9_25-1
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DOI: https://doi.org/10.1007/978-1-4614-8968-9_25-1
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