Journal
OPTICS AND LASERS IN ENGINEERING
Volume 92, Issue -, Pages 57-62Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlaseng.2016.12.014
Keywords
Prepregs; Three-color digital holography; Short beam shear test; Displacement measurement; Crack detection
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In this paper, we propose a three-color holographic interferometer devoted to the 3D displacement field analysis of a composite material. The method in applied to analyze cracks during a short beam shear test. The tested materials are a glass/epoxy composite, a flax/carbon/epoxy composite and a flax/epoxy composite. Such an evaluation provides a pertinent parameter to detect premature cracks in the structure, long before it becomes visible on the real time stress/strain curve, or with a classical microscope. Moreover, the mechanical proprieties of flax/carbon/epoxy composite and flax/epoxy composite are compared.
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