In this paper we present the Sylvie three-dimensional (3D) Drape Tester, developed for fabric drape measurements, and its special auxiliary device that exerts dynamical impact on fabrics during draping. In addition, a new draping characteristic, namely the Drape Unevenness Factor, was defined to describe the evenness of the shape of draped textile material numerically. Three special cotton fabrics were woven exclusively for this work. The three fabrics differ only in the twist direction of their weft yarns. The effect of twist directions in woven fabrics and the influence of the applied dynamical impact on drape test results were analyzed. Based on the test results, we also analyze the process of drape formation, offering proposals for modification of fabric behavior models to contribute to better fabric simulations.

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Many researchers examined the static drapeability of textiles, they found that the textiles with different materials, structures or finishing have different drape characteristic. They analyzed also apart the static measuring the drapeability influenced with dynamical effect. They measured the dynamic drapeability during rotating the textile sample [1]. They found that the form of the draped sample is change from the dynamic effect. The Sylvie 3D Drape Tester developed at BUTE record all the surface of draped textiles with scanning technology, and the evaluating computer system define the usual drapeability parameters, like node number and drape coefficient. We complete the equipment with a tool with which we can examine the drapeability after different exactly defined dynamic effect.