Browsing by Author "Mertová Iva"
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- Item21st International Conference Strutex - Structure and Structural Mechanics of Textiles(2016-01-01) Neckář Bohuslav; Kolčavová Brigita; Mertová Iva; Drašarová Jana
- Item22nd International Conference Strutex - Structure and Structural Mechanics of Textiles(2018-01-01) Neckář Bohuslav; Kolčavová Sirková Brigita; Mertová Iva; Drašarová Jana
- ItemBehavior of Two And Three-fold Twisted Multifilament Yarns(Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology Technical University of Liberec, Faculty of Textile Engineering, 2018-01-01) Moučková Eva; Mertová Iva; Vyšanská Monika; Hajská Šárka
- ItemEffect of the selected machine variables on the structural characteristics of air-jet spun yarn(Taylor and Francis Ltd., 2020-01-01) Mertová Iva; Moučková Eva
- ItemINFLUENCE OF TWIST ON SELECTED PROPERTIES OF MULTIFILAMENT YARN(AUTEX, Technical University of Lodz,, 2018-01-01) Mertová Iva; Moučková Eva; Neckář Bohuslav; Vyšanská MonikaOwing 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.
- ItemMeasuring of yarn crimp in woven fabric(Slovak University of Technology in Bratislava, 2015-01-01) Mertová Iva; Neckář Bohuslav
- ItemMODELLING OF CONSTRUCTION OF WOVEN FABRIC(Technical University of Liberec, Faculty of Textile Engineering, 2018-01-01) Kolčavová Sirková Brigita; Mertová Iva
- ItemNew method to measure yarn crimp in woven fabric(SAGE PUBLICATIONS LTD, 2016-01-01) Mertová Iva; Neckář Bohuslav; Ishtiaque Sayed Muzaffar
- ItemProperties and structure of spun yarns in relations to the spinning and weaving technology(Technical University of Liberec, 2019-01-01) Kolčavová Sirková Brigita; Mertová Iva; Moučková Eva
- ItemProperties of Viscose Vortex Yarns Depending on Technological Parameters of Spinning(AUTEX, Technical University of Lodz, 2015-01-01) Moučková Eva; Mertová Iva; Jirásková Petra; Krupincová Gabriela; Křemenáková Dana
- ItemSummer School of Fabric Patterning 2018(2018-01-01) Kolčavová Sirková Brigita; Mertová Iva; Lenfeldová Irena; Louda Ondřej; Moučková Eva; Jirásková Petra; Ježík Karol
- ItemSummer School of Fabric Patterning 2017(2017-01-01) Kolčavová Sirková Brigita; Mertová Iva; Lenfeldová Irena; Louda Ondřej; Moučková Eva; Jirásková Petra; Ježík Karol
- ItemSummer School of Fabric Patterning 2019(2019-01-01) Kolčavová Sirková Brigita; Moučková Eva; Jirásková Petra; Lenfeldová Irena; Mertová Iva; Ježík Karol
- ItemWoven Fabric Structural Pore Models Analysis(Technical University of Liberec, 2016-01-01) Kolčavová Brigita; Mertová Iva
- ItemWoven fabric structural pore models analysis(2017-01-01) Kolčavová Brigita; Mertová Iva