Stick-slip behavior of para-aramid (Twaron®) fabric in yarn pull-out

The aim of this study was to understand the stick-slip properties of para-aramid woven fabrics. Para-aramid Twaron CT (R) 716 (CT716) and Twaron CT (R) 714 (CT714) woven fabrics were used to conduct the pull-out tests. CT716 and CT714 woven fabrics have low and high fabric densities, respectively. Data generated from the single and multiple yarn pull-out tests using various lengths of CT716 and CT714 woven fabrics included fabric stick-slip force and accumulative retraction force. Stick-slip force and accumulative retraction force depend on fabric density and the number of pulled ends in the fabric. Stick-slip force and accumulative retraction force in the multiple-yarn pull-out test were higher than those of the single-yarn pull-out test. Stick-slip force and accumulative retraction force in single-and multiple-yarn pull-out tests in the dense CT716 fabric were higher than those of the loose CT714 fabric. In addition, long fabric samples showed high stick-slip force compared with that of the short fabric samples.