Iva MertovaTechnical University of Liberec | TUL · Department of Technologies and Structures
Iva Mertova
Ing. Ph.D.
About
11
Publications
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45
Citations
Citations since 2017
Introduction
Skills and Expertise
Publications
Publications (11)
This article specifically focuses on the prediction of thread crimp suitable for all types of dobby woven fabric constructions. Herein, warp and weft crimp prediction was performed using mathematical formulations based on the geometric characteristics of the woven fabric structure. Prediction was designed to react to the influence of all input para...
We investigate the manner in which the delivery speed and spinning air pressure of Rieter air-jet spinning machines affect the structural characteristics of viscose air-jet spun yarn (wrapper-fibre ribbon width, wrapper-fibre ribbon helix pitch, wrapper-fibre angle with respect to the yarn axis, yarn diameter, yarn packing density and number of wra...
This work deals with analysis of the behavior of two and three-fold twisted multifilament yarn in dependence on twist level. The structure and consequently various parameters and properties of filament fibers bundle are changed due to twisting. For experiment, two and three-fold twisted polyamide and polyester multifilament yarns were used. Selecte...
Owing 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 str...
A new method to measure the warp or weft yarn crimp in fabric is proposed. The method is based on the analysis of yarn tensile characteristics. In the proposed method, yarns with predetermined distance are removed from fabric and clamped between the jaws of a tensile-strength machine (Instron) without any pretension in the yarn and, accordingly, ya...
![Figure 1. Scheme of spinning unit of Vortex spinning machine [12]](publication/276502351/figure/fig1/AS:391440044707849@1470337987874/Scheme-of-spinning-unit-of-Vortex-spinning-machine-12_Q320.jpg)
![Figure 4. Model representation of fibre ribbon [14]](publication/276502351/figure/fig4/AS:391440048902150@1470337988702/Model-representation-of-fibre-ribbon-14_Q320.jpg)
This paper analyzes the relationship between technological parameters of spinning of 100% CV Vortex yarns of different counts and its selected geometrical parameters (a lead of helix of wrapping fibre ribbon, yarn diameter) as well as yarn properties. The number of twist of wrapping fibre layer is determined. The effect of the yarn delivery speed,...
This paper focuses on the description and evaluation of warp and weft crimp in jacquard woven fabrics. For modeling of warp and weft crimp in jacquard structures we use the mathematical formulation together with geometrical characteristics of the fabric structure. This is done on the basis of definition of the binding wave in longitudinal and trans...
The article focuses on a new approach for characterization and evaluation of lateral yarn deformation. A small review
about theoretical description and measurement possibilities will be introduced. The evaluation of yarn compression
will be done by three innovative methods (lateral deformation of yarn between two parallel plates, simulation of
bind...
![Figure 1: Modelled deformed twill weave unit cell in tension [17]](profile/Brigita-Kolcavova/publication/272537578/figure/fig1/AS:646390275395586@1531122859355/Modelled-deformed-twill-weave-unit-cell-in-tension-17_Q320.jpg)
Fabric properties and fabric structure prediction are important in each industry domain. Generally all professional
CAD packages for woven textiles system will be able to achieve basic fabric simulation and production output. A
good CAD system should enable you to create design (dobby and jacquard woven fabric) ideas quickly and easily
to enhance t...
The article focuses on a new approach for characterization and evaluation of lateral yarn deformation. A mall review about theoretical description and measurement possibilities will be introduced. The evaluation of yarn compression will be done by three innovative methods (lateral deformation of yarn between two parallel plates, simulation of bindi...
The system LibTex has been used for the prediction of structure, parameters and properties in the line fibre - yarn - fabric. The system contains databases of fibre properties & fabric weaves, and the prediction is based on the complex of theoretical and regression models. The material and technological parameters for different materials, yarns and...
Projects
Projects (7)
We would like to let you know that The Summer School of Textile Structures “Design, production, modelling and analysis of linear textile structure and products” will be held at Faculty of Textile Engineering, Technical University of Liberec.
Where: Faculty of Textile Engineering Technical University of Liberec, Čížkova 2 Liberec, building B. When the pandemic does not allow traveling, it will take place with a modified program online via google meet platform.
The attendance is free of charge and the registration online.
http://www.ft.tul.cz/veda-a-vyzkum/summer-school-of-textile-structures-2022/the-summer-school-of-textile-structures
We would like to inform you about the International Summer School of “Fabric Patterning” at the Faculty of Textile Engineering, Technical University of Liberec.
Summer school 2022 is oriented on patterning of woven and knitted fabric, including final fabrics realization using the industrial machines.The main aim of summer school is realization from idea to final fabric in weaving as well as knitted section.
Date: August 22th – 26th, 2022, Liberec, Czech Republic.
ONLINE FORM
The registration and more info: www.ft.tul.cz/fabric_patterning
We would like to inform you about the International Summer School of “Fabric Patterning” at the Faculty of Textile Engineering, Technical University of Liberec.
Summer school 2020 is oriented on patterning of woven and knitted fabric, including final fabrics realization using the industrial machines. The main aim of summer school is realization from idea to final fabric in weaving as well as knitted section.
Date: August 10th – 21st, 2020, Liberec, Czech Republic.
The registration and more info: www.ft.tul.cz/fabric_patterning
