Effect of Twist, Fineness, Loading Rate and Length on Tensile Behavior of Multifilament Yarns (A Multivariate Study)

Abstract

The purpose of the present study was a multivariate experimental analysis of continuous multifilament glass yarns. The experimental design involved four main factors affecting the yarn tensile behavior, namely twist, fineness, loading rate and specimen length. In the evaluation, both the main effects and their interactions were considered. In the initial test design, each factor had been covered by at least two levels. The performed analysis of variance on the constructed response surface allowed us to exclude some factors and interactions and to narrow the test design space in the second step. The interaction effect of twist and fineness could be well documented. In particular, the nonlinear effect of twist with a pronounced maximum allowed us to discuss the role of local interactions due to pressure sensitive frictional bond that gets amplified at a particular level of twist.