APPLICATION OF THE METHOD OF EXPERT ASSESSMENTS TO ESTABLISH THE MAIN QUALITY INDICATORS OF NATURAL FIBER KNITTED FABRICS IN ORDER TO DETERMINE THEIR WEAR RESISTANCE

Abstract

The goal of the work is to use an expert assessment method to establish quality indicators by which it would be possible to assess the wear resistance of natural fiber knitted fabrics, namely: cotton knitwear intended for summer clothes, and wool knitwear intended for the spring-autumn assortment of products. It is proposed to determine the influence of various factors on the wear resistance of natural fiber knitted fabrics according to the main single quality indicators from the list and based on the standards DSTU 3823-98 "Fabrics. Standards and method of quality assessment". The expert commission was formed from among experts – PhDs and Doctors of Science in the field of technology of textile materials, sewing and knitted products. The ranking was carried out by ten experts for 12 objects of expertise – individual quality indicators of cotton knitwear, and for 13 objects of expertise – individual quality indicators of wool knitwear. The ranking results showed that for most experts, the main quality indicators of cotton knitwear are the change in linear dimensions after wet treatments, breaking load and colour fastness to light, and for wool knitwear – the change in linear size after wet treatments, the number of abrasion cycles and colour fastness to light. In order to assess the overall consistency of expert opinions and determine the reliability of the obtained expert estimates, concordance coefficients are calculated, the values of which indicate a high degree of consistency of expert opinions and allow us to evaluate the agreement of expert decisions as "satisfactory". The determination of the weight coefficients of quality indicators made it possible to establish their significance for cotton and wool knitwear. As a result of the studies, the value and significance of individual quality indicators of cotton and wool knitted fabrics in the operation process are established. The quality indicators of cotton and wool knitted fabrics to determine their wear resistance are established.