Determination of the percentage of wrapper fibers in air-jet yarn by computed tomography cross-sections

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F25%3A00013973" target="_blank" >RIV/46747885:24410/25:00013973 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1177/15589250251386536" target="_blank" >https://doi.org/10.1177/15589250251386536</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1177/15589250251386536" target="_blank" >10.1177/15589250251386536</a>

Result language

angličtina

Original language name

Determination of the percentage of wrapper fibers in air-jet yarn by computed tomography cross-sections

Original language description

Air-jet spun yarn is specific to its core and wrapper surface layer. The core comprises a roughly parallel bundle of fibers, while the cover is a ribbon of fibers twisted around the core (wrapper fibers). Regarding yarn structure, the percentage of wrapper fibers to core fibers significantly influences the yarn tenacity of air-jet spun yarns. This work aims to determine the percentage of wrapper fibers from a total number of fibers in an air-jet spun yarn computed tomography (CT) cross-section. It first obtains, through image arithmetic, information about the degree of fibers’ inclination and their position within the cross-section. The dependence of these two parameters defines a radius (a limiting radius) that imaginatively divides the yarn cross-section into a core section and a ribbon section. Finally, from a certain number of pairs of yarn cross-section images, it evaluates the percentage of wrapper fibers in the air-jet spun yarn surface ribbon. The correctness of the described approach is validated by assessing the ring-spun yarn using the same procedure as the air-jet spun yarn. This paper presents the whole procedure of processing the pairs of cross-section images, finding the optimal pairs of images for the implementation of image arithmetic, the segmentation of the monochromatic image, the measurement of the geometric parameters of the objects on the binary image, and the processing of the data by a specially prepared code in the MatLab environment. The methodology determines the average percentage of wrapper fibers of 100% Tencel 23 tex air-jet yarn to be 36.3%.

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

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

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Engineered Fibers and Fabrics>

ISSN

1558-9250

e-ISSN

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Volume of the periodical

20

Issue of the periodical within the volume

Oct

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

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UT code for WoS article

001600950900001

EID of the result in the Scopus database

2-s2.0-105019921592