INFLUENCE OF TWIST ON SELECTED PROPERTIES OF MULTIFILAMENT YARN

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dc.contributor.authorMertová Ivacs
dc.contributor.authorMoučková Evacs
dc.contributor.authorNeckář Bohuslavcs
dc.contributor.authorVyšanská Monikacs
dc.date.accessioned2018-09-25T12:19:54Z
dc.date.available2018-09-25T12:19:54Z
dc.date.issued2018cs
dc.description.abstractOwing to twisting of filament fiber bundle, the structure and consequently various parameters and properties of a fiber bundle are changed. The aim of the work is to verify the effect of multifilament yarn twist (or twist coefficient) on selected mechanical properties such as multifilament tenacity, breaking elongation, and coefficient of fiber stress utilization in the yarn. Furthermore, the influence of twist on structural parameters such as the angle of peripheral fibers, the packing density, and the substance cross-sectional area of fiber bundle is observed. Two multifilament yarns with different filament cross-section shape and material were used for the experiment. Experimentally obtained data was compared with the known model dependencies derived decades ago based on the helical model. It can be stated that multifilament yarn retraction can be predicted based on the angle of peripheral fibers using the Braschler’s model. The coefficient of fiber stress utilization in the multifilament yarn determined experimentally corresponds with a theoretical curve, constructed according to Gégauff and Neckář, in the area of Koechlin’s twist coefficient α > 54 ktex1/2 m−1. Results as well as possible causes of deviations of experimental data from the theoretical one are discussed in this work.
dc.format.extent11cs
dc.identifier.doi10.1515/aut-2017-0018
dc.identifier.issn1470-9589cs
dc.identifier.urihttps://dspace.tul.cz/handle/15240/32029
dc.identifier.urihttps://content.sciendo.com/view/journals/aut/18/2/article-p110.xml
dc.language.isoengcs
dc.publisherAUTEX, Technical University of Lodz,cs
dc.publisher.cityLodzcs
dc.relation.ispartofAutex Research Journal
dc.relation.ispartofseries0cs
dc.relation.urihttps://content.sciendo.com/view/journals/aut/18/2/article-p110.xmlcs
dc.subjectMultifilament yarn breaking tenacitycs
dc.subjectmultifilament yarn breaking elongationcs
dc.subjecthelix modelcs
dc.subjecttwistcs
dc.subjectpacking densitycs
dc.subjectyarn retractioncs
dc.titleINFLUENCE OF TWIST ON SELECTED PROPERTIES OF MULTIFILAMENT YARNcs
local.citation.epage110-120cs
local.citation.spage110-120cs
local.identifier.publikace5501
local.identifier.wok435020000002en
local.relation.issue2
local.relation.issue2cs
local.relation.volume18
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