| Issue |
EPJ Web of Conferences
Volume 6, 2010
ICEM 14 – 14th International Conference on Experimental Mechanics
|
|
|---|---|---|
| Article Number | 20011 | |
| Number of page(s) | 8 | |
| Section | Composite Materials, Including Natural Fibers and Matrices | |
| DOI | https://doi.org/10.1051/epjconf/20100620011 | |
| Published online | 10 June 2010 | |
https://doi.org/10.1051/epjconf/20100620011
Free edge effects study in laminated composites using Digital Image Correlation: effect of material and geometrical singularities
1
EC-Lille, LML, Boulevard Paul Langevin, Cité
Scientifique, 59655
Villeneuve d'Ascq
France
2
ONERA-Lille, DADS-CRD, 5 boulevard Paul Painlevé
59045
Lille Cedex
France
Composite materials are today used for various industrial applications. However, delamination on free edges, where stress gradients are strong, still remain a problem. In the aim of a better understanding of such phenomenons, Digital Image Correlation (DIC) measurements have been carried out on [(15n/-15n)2]s laminates under uniaxial tensile strain. Three different composites with different mechanical properties and microstructure have been tested as well as two samples geometries: flat and with ply drop. Experimental results show high shear strain concentrations near 15°/-15° interlaminar interfaces on free edges which depend on material mechanical properties and microstructure and increase in the vicinity of a geometrical singularity.
© Owned by the authors, published by EDP Sciences, 2010
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