Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6705964 | Composite Structures | 2016 | 10 Pages |
Abstract
The finite element simulation of nesting phenomena in textile composites is challenging, because of the difficulties that come with creating a 3D finite element model of a stack of nested plies. This paper proposes a 2D modeling approach for prediction of crack initiation locations in nested textile composites. The model is built up based on high resolution microscopic images of the polished edge of a tensile specimen and routines have been developed to take the inhomogeneous intra-yarn fiber volume fractions into account. The locations of critical stresses are compared with high-resolution microscopic images during tensile loading of the nested textile composite, and correlated with the locations of crack initiation. The methodology is validated against tensile experiments on a steel fabric reinforced epoxy laminate. The steel fabric has a high tendency for layer nesting and a high inhomogeneity in intra-yarn volume fractions, and it shows very good contrast in micro-tomography and microscopic images.
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Authors
J.C. Faes, A. Rezaei, W. Van Paepegem, J. Degrieck,