The last few years have shown a tendency for an increase in the production of knitting fabrics made of yarns containing elastomeric threads. A main point of the construction of such garments is the determination of their deformation properties, which change depending on the type of the knit and the composition of the yarn. Determining these properties requires textile testing which takes time and requires additional expenditures which necessitates the development of new methods for their evaluation. The aim of this work is to examine the relation between the distortion features of elastic knit fabrics and the percentage of elastomeric threads in the yarn. The subject of the study is a group of knit fabrics with the Punto di Roma stitch structure containing elastomeric threads from 2% to 6%. Based on the proven statistical significance of the correlation coefficients, a regression analysis was performed. A mathematical model of the studied dependence is presented, regression equations are derived. The analysis of the model proved that it works. The results obtained from the study aim to optimize a method for constructing a garment from a knitted fabric containing elastomeric threads.
The article presents a method for determining for deformation properties of knitted fabrics in the process of pattern making of women’s outerwear, by the percentage of elastomeric threads in their composition. To develop the method, a study of the deformation properties of a group of jacquard single jersey fabrics was performed, depending on their content of elastomeric threads. A model for their determination in the process of clothing design pattern through reduction factors is proposed. The dependence on the reduction factors and the percentage of elastomeric threads in the composition of the knitted fabrics was studied. Strong statistically significant dependences were found. Using the method of linear regression, mathematical models have been developed, by which the reduction factor is determined on the basis of the percentage of elastomeric threads in the knitted fabrics. The obtained results are applied to improve the methodology for pattern designing women’s dresses.
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