Counter-plying of two-ply yarn: inner structure changes and external response

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F24%3A00012729" target="_blank" >RIV/46747885:24410/24:00012729 - isvavai.cz</a>

Result on the web

<a href="https://journals.sagepub.com/doi/pdf/10.1177/00405175241246269" target="_blank" >https://journals.sagepub.com/doi/pdf/10.1177/00405175241246269</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/00405175241246269" target="_blank" >10.1177/00405175241246269</a>

Result language

angličtina

Original language name

Counter-plying of two-ply yarn: inner structure changes and external response

Original language description

The paper introduces a principle of iso-quantities for investigating the distribution of a number of fibers in a two-ply yarn cross-section in a regular grid. The main aim is to map the two-ply yarn inner structure and changes of this structure to various ply twists. So far, modifications of two-ply yarn in different ply twists have been explained only indirectly from a macroscopic point of view by observation of the process of two-ply yarn retraction. This paper applies cross-sections and the method of iso-quantities to find the causes of these macroscopic changes. The ratio of the twist coefficients of the twisted and single yarns αs/ αj was used to indicate the internal changes of the two-ply yarn. Using the iso-quantities method and the x–y difference curves of the fiber distribution in the two perpendicular directions of the cross-section, it was shown that counter-plying causes a change in the fiber distribution in the cross-section, resulting in the occurrence of negative values of the retraction, insignificant changes in the external geometry of the two-ply yarn, and a constant breaking strain behavior. These manifestations appear only up to the values of the ratio αs/ αj of 1.2 or less. After this limit, the extreme value of the x–y difference settles down, the retraction begins to take on positive values, and the breaking strain of the two-ply yarn begins to increase as the two-ply yarn twist increases.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20503 - Textiles; including synthetic dyes, colours, fibres (nanoscale materials to be 2.10; biomaterials to be 2.9)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

TEXTILE RESEARCH JOURNAL

ISSN

0040-5175

e-ISSN

—

Volume of the periodical

94

Issue of the periodical within the volume

19-20

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

2220-2231

UT code for WoS article

001205199700001

EID of the result in the Scopus database

2-s2.0-85190819773