Effect of Transverse Cracking on Stiffness Reduction of Cross-Ply Laminates
An analytical model based on the principle of minimum potential energy is developed and applied to study the effect of multiple cracks in cross-plies on the stiffness of a laminated composite. The transverse cracks are assumed to span the thickness of the cross-ply group only partially unlike in the previous studies in which they were assumed to span the entire thickness of the cross-ply group. This arrangement facilitates the study of competition between the self-similar extension of an inherent flaw within the cross-plies and the multiple parallel cracking. The numerical results for the axial stiffness as a function of both the crack density and the crack length are presented for three different composite material systems (glass/epoxy, graphite/epoxy and ceramic/ceramic) for which experimental results are available so as to validate the model.
L. R. Dharani and F. Ji, "Effect of Transverse Cracking on Stiffness Reduction of Cross-Ply Laminates," Applied Composite Materials, Springer Verlag, Jan 1995.
The definitive version is available at http://dx.doi.org/10.1007/BF00567193
Mechanical and Aerospace Engineering
Article - Journal
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