Identification of elastomers by digital image correlation

Abstract

As a complement to classic characterization in the identification of elastomers, full-field measurement methods such as digital image stereo correlation can undeniably contribute to the validation of elastomeric connection behavior. Indeed, these measurements enable three-dimensional displacement and strains fields over the totality of the studied surface to be finely reached. Characterization tests in shearing on an elastomer were followed by image stereo correlation up to high strain levels. The experimental results could thus be compared with theoretical results using an Alexander hyper-elastic constitutive law, which enabled the relevance of this law to be validated locally.