Analysis of Quality Indicators of Yarns with Mixed Composition
Keywords:
Mixed yarns, linear density, tensile strength, coefficient of variation in tensile strength, elongation at break, input and output parameters, regression models, dispersion analysisAbstract
The article analyzes the properties of yarns with mixed content and determines the change of its quality indicators depending on the content of the yarn. According to the percentage composition of linear density 50 tex thread, the changes in breaking strength, variation coefficient of breaking strength, elongation at break were analyzed under the influence of the changed values of the parameters for the thread obtained by pneumomechanical method. A full-factorial experiment was conducted in the production of yarns obtained from a mixture of fibers of different composition, and regression equations were created based on the input and output parameters of the processing of the experimental results based on the quality indicators of the yarns. The Cochrane test was used to test the degree of variance variances. In order to check the adequacy of the linear model based on the regression equation, the residual variance was determined by Fisher's test, and the Student's test was used to evaluate the regression coefficients.
