| Titre : |
Semi-automated geometry-independent determination of the shape factor of non-circular fibers |
| Type de document : |
texte imprimé |
| Auteurs : |
Inga Noll, Auteur ; Martin Kopaczka, Auteur ; Oliver Rippel, Auteur ; Dorit Merhof, Auteur ; Gunnar Seide, Auteur ; Thomas Gries, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 31-33 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Automatisation
Extrusion filage
Fibres textiles synthétiques
Morphologie (matériaux)
Production
|
| Tags : |
'Fibres synthétiques' 'Facteur de forme' cercle' Automatisation Production |
| Index. décimale : |
677.4 Textiles artificiels |
| Résumé : |
Shaped fibers are increasingly being used for the functionalization of textiles. These can be distinguished from conventional fibers by a non-circular cross-section. The production of synthetic fibers is made considerably more difficult by the swelling of the polymer melt at the nozzle outlet. As a result, the fiber cross-section diverges from the shaping capillary cross-section. The socalled shape factor is used to characterize the resulting fiber cross-section. In this paper the shape factor criteria overhang-factor (Fo) and circle-factor (Fc) were defined. From these independent criteria a geometry independent shape factor (FITita) can be derived. The development of a semi-automated program enables the evaluation of larger sample sizes in a negligible amount of time and reduces the subjective influence. |
| Note de contenu : |
- Geometry independence
- Degree of automation
- Number of samples
- Influence of subjectivity
- Value range
- Description of the program
- Overhang and mispixel (overhang-factor Fo)
- Ratio of outer-to-inner circle radius (circle factor Fc)
- Table 1 : Shape factor determination methods according to state of research
- Table 2 : Deficits in the determination of the shape factor of shaped fibers
- Fig. 1 : Lower/upper limit of the scale for determining the shape factor
- Fig. 2 : Plane division in the creation of a binary image of the fiber cross-sections and the corresponding binary image of the "target"-geometry using cross fibers as an example
- Fig. 3 : Comparison of possible expression forms of cross fibers for the interpretation of the relevance of the combination of 2 factors for the determination of the shape factor |
| En ligne : |
https://drive.google.com/file/d/1Qz7298ytJcfTsJSjJHLmUTyBPRQjICJ9/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33935 |
in CHEMICAL FIBERS INTERNATIONAL > Vol. 70, N° 1 (03/2020) . - p. 31-33
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