Investigation of the Fabric Construction of the Effect on Pilling and Abrasion in Yarn Dyed Cotton Fabrics
For this study, yarn dyed cotton woven fabrics were produced in three different yarn counts and three different patterns, then pre-treatment processes were applied to these fabrics. The physical properties and pilling and mass losses with abrasion performance properties of these fabrics were determined experimentaly according to relevant standarts. The obtained results were evaluated and fabric construction of the effect on pilling and abrasion was analyzed.
Multivariate Studies of Mechanical Properties for Wool and Cotton Fabrics
In this study, the mechanical properties of fifty-eight light-weight wool/wool-blend fabrics and twenty medium to heavy-weight cotton denim fabrics were analyzed by multi-dimensional techniques of principal component analysis. The technique reduced the dataset of wool/wool-blend fabrics into seven components and explained 86% of the population variance. For the cotton denim fabrics, the dataset was reduced into five components and explained 95% of the population variance. Fabric surface properties and fabric bending and shear properties were the most important properties to explain the fabric stiffness hardness and tailorability for these two fabric classes. The results show how multivariate statistical analysis techniques of fabric mechanical and surface property data for two very different groups of fabrics can provide a basis for the specification and control of fabric quality along the textile and apparel supply chain. These reduced datasets with the most important component extracted first and the least important component extracted last, allow the supply chain members to focus directly on the key factors for product design and development.
Mechanics of deformable directed surfaces
Abstract The paper develops a simple, yet complete and consistent non-linear dynamic thermo-elastic shell theory based on the concepts of a two-dimensional directed continuum. The constitutive equations are postulated in a general form. Stress-strain relations are derived using the equation of energy balance and the two entropy production inequalities, which are rewritten in a special form. The linear theory is discussed in detail. The structure of the stress-strain relations is presented in the most general form and then specialized to concrete examples, in particular, to the classical shell theory, using their invariance properties with respective to certain symmetry groups. The elastic moduli are determined by demanding the coincidence of the frequency dispersion surfaces obtained using the two-dimensional theory with the lowest foils of the corresponding surfaces resulting from the three-dimensional theory of elasticity.