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Experimental study of capillary rise in fabrics using an electrical resistance technique

Hamdaoui M., Fayala F., Perré P., Ben Nasrallah S.

Autex Research Journal

2008

Vol. 8, no. 2

44--48

An electrical method has been used to study capillary rise in fabrics. This method is based on the measure of the electrical resistance and leads to the determination of time-space water content evolution. The obtained results allowed us to deduce the capillary pressure curve of the fabrics and the flow velocity.

Porosity determination of jersey structure

Benltoufa S., Fayala F., Cheikhrouhou M., Ben Nasrallah S.

Autex Research Journal

2007

Vol. 7, no. 1

63--69

In our paper, we attempt to investigate methods of determining jersey porosity which is this fabric's principal physical characteristic. In fact, end use, liquid absorbency, thermal comfort and resistance are closely related to pore size and distribution. So it is important to study porosity, in order to classify and determine the right use of jersey knitted structure. Many methods are used to estimate porosity, but most concern air permeability, image processing and geometry modelling. The first mentioned is used for the stretched structure, the second is valid for fabrics with high porosity levels, and the last mentioned is used to confirm any structure's conformation. The aims of this study are twofold; firstly, to recognise the most suitable and easiest method of estimating the fabric's porosity, and secondly to study the influence on porosity of various knitting parameters of jersey structure such as yarn number and count, fabric thickness, loop length, and stitch density.