Woven fabric behaviour during pulling disc-shaped specimen through a central hole

Abstract

The behaviour of suiting during pulling a disc-shaped specimen through a central hole of replaceable stand was investigated. The tests were performed using KTU-Griff Tester. Fabric behaviour was evaluated on the basis of the parameters of the typical pulling curve <i>H-P </i>(punch height - pulling Force): maximum pulling Force (<i>P</i>_max), tangent of the slope angle (<i>tgα</i>) of initial part of curve <i>H-P, </i>pulling work (<i>A</i>),<i> </i>and changes in fabric thickness (<i>δ</i>) and maximum specimen deformation (<i>H</i>_max)<i>. </i>The analysis of the changes in the specimen geometric parameters has shown that the parameters <i>a</i> and <i>d </i>of epicycloids and the number of waves (wrinkles) <i>N </i>depend on the level of deformation <i>H </i>and on properties of the tested fabric. The used method of pulling a disc-shaped specimen through a central hole of stand can be applicable for the investigation of mechanical properties of different textile fabrics, such as anisotropy of textile hand and drape.