Fabric Friction Research Articles

Fabric Bending and Drape Based on Objective Measurement

There has been much discussion in the literature about the relationship between fabric “handle” and objective instrumental measurements of fabric low stress mechanical and surface properties such as fabric tensile properties, shear, bending, lateral compression, surface friction and surface roughness. But fabric “handle” is not really an inherent fabric property, rather it is a description of one of the ways in which people generally make a subjective assessment of some of the quality attributes of apparel fabrics, designed for particular end‐use applications. In contrast, fabric drape is an inherent mechanical property of a fabric. Fabric drape is that unique property which quantifies the ability of a fabric to bend simultaneously in more than one plane. In order to exhibit the property of drape, fabrics must be able to bend and shear simultaneously, thus distinguishing textile materials from paper or thin polymer films. Develops a fundamental mechanical analysis of fabrics bending under their own weight. The equations governing the shape of an elastic fabric cantilever are solved numerically. Discusses the implications for experimental measurement of fabric bending length and fabric bending rigidity in terms of these numerical solutions with negligibly small errors. Graphically presents profiles of the draped fabric cantilever. Makes a comparison of the numerical solutions with the approximate formulae derived by F.T. Peirce.

Electrical method of predicting in situ stress state of normally consolidated clays: Meegoda, N J; Arulanandan, K In: Use of In Situ Tests in Geotechnical Engineering (papers to the Conference, Blacksburg, 23–25 June 1986)P794–808. Publ New York: ASCE, 1986 (ASCE Geotechnical Special Publication No 6)

The electrical method was used to characterize the electrical anisotropy, shape and cementation of fine grained soils. It was found that for normally consolidated soils there is a strong dependence of fabric anisotropy on the in situ coefficient of lateral earth pressure at rest (Ko). The in situ coefficient of lateral earth pressure at rest also depends on fabric friction. A correlation is established between Ko and electrical index which reflects the strong dependence of fabric anisotropy and fabric friction. It was found that there is a reasonable agreement between the predicted Ko value from the electrical index and the measured Ko value for several soils with consolidation pressures above 68 KPa.

Influence of Fiber Properties on Wrinkling Behavior of Fabrics Part I: Procedures and Apparatus

This is the first in a series of papers in which the mechanism of fabric wrinkling is analyzed. General geometric principles are outlined. Apparatus is described for the measurement of filament, yam, and fabric bending recovery, fabric wrinkling, filament bending modulus, interfiber friction, and planar shear properties of fabrics.

Relationship between Fabric Balance and Surface Friction in Plain-Woven Fabrics

On the assumption that the cross-section of a thread is duangle, the fabric balance of plain cloth has been defined from cloth geometry. The definition takes into considering the balance of crimps.We have examined the relationship between the fabric balance and the anisotropy of surface friction, with the following results:In cloths woven from continuous-filament yarns, the construction of fabrics is distinctly related to surface friction.In this case, the differential frictional effect and fabric balance βλ indicate a negative correlation, where β is a counter-balance and λ expresses the squareness of a fabric.Fabrics made from spun yarns show only slight variations in frictional force with the direction of rubbing, while the relationship between the differential frictional effect and βλ is indistinct.It may seem to follow, then, that fabric balance βλ is significant as a value of fabric balance in an investigation of surface friction.

15—A STUDY OF FABRIC-ON-FABRIC DYNAMIC FRICTION

A new apparatus for the investigation of the dynamic friction of fabric is described. The apparatus is designed so that frictional forces may be recorded as a function of the orientation of the fabric relative to a specified direction. Most of the experimental data have been obtained for the friction of a fabric on itself and it is found that the mean frictional force, F p (averaged over all orientation), is related to the pressure, P, by a relationship of the form log F p = C1 + n log P which is consistent with the adhesion theory of friction. The values of n and C 1 depend mainly upon the structure of the yarns comprising the fabric, the chemical natrue of the fibres and the finish applied.

The Spectral Distribution of Sound Produced by Fibers and Fabrics in Friction

The constructional details and theory of operation of a highly stable and sensitive fiber and fabric friction sound analyzer are described. Sound pressure curves for three typical fabrics and one bulk wool are shown. Results will be described in detail in Part II.

Review on the factors influencing the friction of fibres, yarns and fabrics

Review on the factors influencing the friction of fibres, yarns and fabrics

A friction meter for determining the coefficient of kinetic friction of fabrics

A friction meter for determining the coefficient of kinetic friction of fabrics

Skin friction of various surfaces

Measurements were made of the skin friction of various fabrics and surfaces due to interest in the reduction of the skin friction of Zeppelin outer cover. A machine was designed and constructed using Couette type of flow for the purpose of making the measurements. Results obtained with the machine are in general agreement with wind tunnel results. It was found that a smooth surface free from nap, whatever the material, approaches a limiting value for skin friction, and that as a surface becomes smoother any improvement in skin friction becomes increasingly hard to obtain. The results are illustrated by curves.