Conductive yarns are an essential component of smart textiles which combine electronic elements with garments or technical textiles. Their functionality, however, can strongly be reduced by wearing, washing, and other mechanical , thermal or chemical influences.
A new study, concentrating on silver-coated nylon yarns, examines the influence of mechanical stress on the electrical conductivity of these yarns. It compares integration techniques such as stitching and embroidery, used to create different conductive test structures on a non-woven, which are afterwards subject to stretching and bending tests. The results show that all mechanical forces can damage the silver-coating on the single fibers, which has to be taken into account when planning the creation of electro-textiles.
Margreet de Kok, Hans de Vries, Katharine Pacheco and Gert van Heck
Failure modes of conducting yarns in electronic-textile applications
Text. Res. J., online first (2015)