STUDY OF RIB KNITS COURSEWISE TENSILE PROCESS

dc.contributor.authorYelina, Tetiana
dc.contributor.authorHalavska, Liudmyla
dc.contributor.authorBobrova, Svitlana
dc.contributor.authorLytvynenko, Nataliya
dc.contributor.authorDzykovych, Tetiana
dc.contributor.organizationTechnická univerzita v Liberci
dc.date.accessioned2022-08-18T09:25:57Z
dc.date.available2022-08-18T09:25:57Z
dc.description.abstractStretchability of knitwear is one of the most important factors of wearing comfort. Elasticity of knitted structures in course wise direction is usually higher than along wales and often characterized by crosswise shrinkage. Existing methods of knitting program development do not consider the real rate of wale wise shrinkage of rib knitted structure under the course wise extension. During the study experimental research has been carried out to fulfill empirical data on the relationship between samples’ length and width under uniaxial course wise elongation. A range of samples of rib 1×1, 2×2, 3×3, 4×4 and 5×5 knits, made of cotton, bamboo, polyacrylonitrile (PAN), wool/acrylic blend and wool yarn, were stretched with a tensile machine WDW-05M. In the process of stretching the width of each specimen was defined in the moments of extension by 50, 100, 150, 200, 250 and 300 per cent. It has been found that linear approximation can be applied to describe the dependence of specimen’s width on its relative course wise elongation. It was found that the stitch height/width ratio changes unevenly. In the beginning of the process of course wise stretching of a rib knitted structure, it does exist, such an interval, where an increase of the knit’s linear size along the courses occurs without a significant shrinkage in the wale wise direction. It is suggested to name the upper limit of this interval as “unidimensional extension limit” and define it as an extension of a standard (100×50mm) specimen, at which its width decreases by 10%. It was found as well that the value of this index significantly depends on the ribbing variation and much less on the type of raw materials.cs
dc.formattext
dc.format.extent9 stran
dc.identifier.doi10.15240/tul/008/2022-2-002
dc.identifier.issn1335-0617
dc.identifier.urihttps://dspace.tul.cz/handle/15240/165996
dc.language.isocscs
dc.publisherTechnical University of Liberec
dc.publisher.abbreviationTUL
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dc.relation.ispartofFibres and Textiles
dc.subjectknittingcs
dc.subjectrib knitscs
dc.subjectstretchingcs
dc.subjectcourswise extensioncs
dc.subjectcrosswise shrinkingcs
dc.titleSTUDY OF RIB KNITS COURSEWISE TENSILE PROCESSen
dc.typeArticleen
local.accessopen access
local.citation.epage17
local.citation.spage10
local.facultyFaculty of Textile Engineeringen
local.fulltextyesen
local.relation.issue2
local.relation.volume29
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