Experimental results in the literature indicate notable non-repeatabilities during mechanical testing of woven fabrics, even under the same loading conditions, which may be linked to the presence of defects and uncertainties at meso or micro levels in yarns. Sources of such uncertainties can include both yarn dimensional tolerances and variations in the fiber/matrix material properties. The aim of this article is to conduct a systematic sensitivity analysis on the meso-level uncertainty factors in a typical woven fabric and identify the most significant factors and their interactions under a trellising mode. A finite element model capable of capturing behavior of dry yarns, along with a two-level full-factorial design approach has been employed. Factorial designs are split into two categories of the geometrical and material factors. It is shown how the obtained range of variations from the above statistical designs may be used to capture non-repeatability in some trellising tests.
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