New possibility of objective evaluation of yarn appearance: part II
1Technical University of Liberec, Faculty of Textile Engineering, Department of Textile Technologies, Liberec, The Czech Republic Studentská 2, 461 17 Liberec 1
Citation Information: Autex Research Journal. Volume 13, Issue 1, Pages 1–10, ISSN (Print) 1470-9589, DOI: 10.2478/v10304-012-0016-6, March 2013
Published Online: 03/27/2013
In this article, the possibility of new objective evaluation of yarn appearance in area employing selected spatial statistical functions is presented. The yarns wound on the boards were used for the experiment. Appearance of standard yarn boards from the standard CSN 80 0704 and real yarn boards with faultless and faulty yarns were converted into grayscale images. Fluctuation in degrees of grayness was evaluated between square fields in the image using statistical function called the area variation curve. In addition, the method was applied to the simulated yarn board appearance generated by the Uster Tester apparatus. Behavior of area variation curves in dependence on the result of visual evaluation of yarn board appearance was discussed. The generated appearances from the Uster Tester device were also evaluated by other statistical function called semivariogram. It was found out that the area variation curve is not a suitable tool for evaluation of yarn board appearance. The semivariogram seems to be a more suitable tool. The paper extends the knowledge on the issue of objective evaluation of yarn appearance and directly follows the author’s work
Prediction of woven fabric properties using software protkatex
1Technical University of Liberec, Faculty of Textile Engineering, Department of Textile Technologies, Liberec, Czech Republic Studentská 2, 461 17 Liberec 1
Citation Information: Autex Research Journal. Volume 13, Issue 1, Pages 11–16, ISSN (Print) 1470-9589, DOI: 10.2478/v10304-012-0017-5, March 2013
Evaluation of yarn lateral deformation
1Technical University of Liberec, Department of Textile Technology, Studentská 2, 461 17 Liberec 1, Czech Republic
2Technical University of Liberec, Department of Textile Design, Studentská 2, 461 17 Liberec 1, Czech Republic
Citation Information: Autex Research Journal. Volume 13, Issue 1, Pages 17–21, ISSN (Print) 1470-9589, DOI: 10.2478/v10304-012-0018-4, March 2013
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 binding point of fabric, cross-sectional analysis of real fabric). The analysis of yarn deformation will be carried out for a set of samples in combination of fiber material, yarn count and given fabric structure.
Testing of yarn abrasion
1Technical University of Liberec, Department of Textile Technology, Liberec, Czech Republic
2Ege University, Textile Engineering Department, Izmir, Turkey
Citation Information: Autex Research Journal. Volume 13, Issue 1, Pages 22–27, ISSN (Print) 1470-9589, DOI: 10.2478/v10304-012-0019-3, March 2013
There exist a lot of methodologies, which can be used for yarn quality testing. Abrasion resistance and its measurement for raw and sized yarn can help in the judgment of yarn weaving-ability. This article concentrates on the possibility of yarn abrasion expression and testing. Relation among fiber material characteristics, selected yarn structural, and mechanical parameters is discussed and a few experimental results are shown.
Computed microtomography in the analysis of fiber migration in yarn
1The Technical University of Lodz, The Institute of Architecture of Textiles, Zeromskiego street 116, 90-543 Lodz, Poland
Citation Information: Autex Research Journal. Volume 13, Issue 1, Pages 28–32, ISSN (Print) 1470-9589, DOI: 10.2478/v10304-012-0020-x, March 2013
This study is a short analysis of the use of computer microphotography in fiber migration testing as a modern nondestructive testing method. Microtomography operates similarly to X-ray computed tomography systems used in medicine, but with much better resolution owing to the use of a smaller radiation spot. The internal structure is reconstructed as a series of two-dimensional cross-sections that are then used to create 2D and 3D morphological objects. This process is non-destructive and does not require special preparation of a testing material.