Effect of cyclic stress on the transverse wicking behaviour of cotton/lycra knitted fabrics

Abstract

It is extremely important to evaluate transverse wicking behaviour of elastic knitted fabric while the fabric simulated in different body motions. In this paper, the effects of short interval dynamic extension and recovery on fabric transverse wicking behaviour were evaluated as the samples were subjected to different rate of extension (speed), different percentage of cyclic extension and different liquid flow rate. For this application, a new cyclic stress instrument was designed and developed to apply repeated dynamic extension and recovery on the fabric. The developed instrument is operated through embedded micro controller programme. The effect of speed, percentage of cyclic extension and flow rate with respect to the dynamic transverse wicking behaviour of elastic knitted fabric has been studied using Box-Behnken experiment model. The experiment model identifies the principal experimental variables such as flow rate, percentage of cyclic extension which has the greatest effect on the transverse wicking behaviour of elastic knitted fabric.

Exploring the transverse wicking behavior of mechanically robust warp super-elastic woven fabric for tight-fitting garments

“…As illustrated in Figure 3, the instrument consists of four parts: a liquid reservoir containing a solution of potassium dichromate connected via plastic tubing to a valve and syringe; a fabric extension adjustment; a liquid drop height adjustment; and a camera and image processing unit. 12,21 Potassium dichromate is used as a stain to indicate the drop size and shape. The aim of the system is to allow metered drops to fall from a set height onto the fabric surface through the valve and syringe arrangement.…”

“…The mutual interaction between liquid and a fabric depends on the hydrophilicity or hydrophobicity of the constituent fibers, the surface geometry characteristics of the yarn/fabric assembly, the volume (or droplet size) and character of the liquids and some external factors (e.g., the tension applied to a fabric, environmental conditions). 1,2,[7][8][9][10][11][12] Recent advances in work with respect to the transverse wicking behavior of textile fabrics are as follows. For example, a cyclic stress instrument was developed by Raja et al, 12 and the effect of parameters (e.g., extension rate, cyclic extension percentage and liquid flow rate) on the transverse wicking behavior of cotton/Lycra knitted fabric was studied.…”

“…1,2,[7][8][9][10][11][12] Recent advances in work with respect to the transverse wicking behavior of textile fabrics are as follows. For example, a cyclic stress instrument was developed by Raja et al, 12 and the effect of parameters (e.g., extension rate, cyclic extension percentage and liquid flow rate) on the transverse wicking behavior of cotton/Lycra knitted fabric was studied. A simple fabric wicking test system was constructed by Baby et al, 13 retrofitted with an embroidery hoop and two USB video microscopes, and the wicking behavior of drops of porcine blood in various volumes on cotton knit fabrics was investigated.…”

A dynamic sweat transfer tester for analyzing transverse sweat transfer properties of multi-weave structure fabrics

“…The methods described are manual method, commercial image analysis method using Photoshop and embedded image analysis method using digital signal processor through MATLAB software (EIAS). In addition, the effects of short interval dynamic extension and recovery on fabric transverse wicking behavior, as the samples were subjected to different rate of extension (speed), different level of cyclic extension and different rates of liquid flow [25] were examined.…”