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On the Use of Digital Image Correlation to Analyze the Mechanical Properties of Brittle Matrix Composites

Abstract : The 2D digital image correlation technique needs a single CCD camera to acquire the surface patterns of a region of a specimen in the undeformed and deformed states. With two images, one can determine in-plane displacement and strain fields. Its performance is assessed and discussed in real experimental situations. Thanks to its sub-pixel resolution, it can be used to monitor experiments even for brittle and quasi-brittle materials, namely materials for which the strain levels remain low (less than 0.1% in many cases). Two examples are given. Firstly, elastic properties of BraSiC (a silicon-based braze to assemble SiC/SiC composites) are extracted from kinematic fields estimated by utilizing a digital image correlation method. Secondly, the technique is utilized to analyze experimental results of a plane shear experiment and validate a damage model describing different degradations in a C/C composite material.
Keywords : Photomechanics
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https://hal.archives-ouvertes.fr/hal-00013814
Contributor : François Hild <>
Submitted on : Thursday, November 17, 2005 - 9:27:12 AM
Last modification on : Monday, February 15, 2021 - 10:41:14 AM
Long-term archiving on: : Tuesday, September 11, 2012 - 12:46:57 PM

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  • HAL Id : hal-00013814, version 1

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François Hild, Jean-Noël Périé, Jacques Lamon, Matthieu Puyo-Pain. On the Use of Digital Image Correlation to Analyze the Mechanical Properties of Brittle Matrix Composites. 2005, 14 p. ⟨hal-00013814⟩

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