Modelowanie statycznego rozdzierania tkanin bawełnianych

• Autorzy: Witkowska B.

Warianty tytułu

EN

Modelling the static tearing of cotton fabric

• Języki publikacji: PL

Abstrakty

PL

Właściwości wytrzymałościowe tkanin determinują ich przydatność do określonego obszaru zastosowania. W pracy przedstawiono analizę zjawiska statycznego rozdzierania tkanin bawełnianych. Celem rozprawy doktorskiej było opracowanie teoretycznego modelu rozdzierania tkanin bawełnianych, który jednocześnie wiąże parametry struktury przędzy i tkaniny ze zjawiskami zachodzącymi w strefie rozdzierania tkanin oraz uwzględnia parametry geometrii tej strefy.

EN

The aim of Ph.D doctor's thesis was checking a possibility to predict a resistance to static tearing for a wing shape sample of cotton woven fabrics -using the derived model based on the analysis of force distribution in the woven fabric tearing zone, parameters of zone geometry and parameters of yarn and woven fabric structure. The research study presents problems relating to the modelling the resistance to static tearing of cotton woven fabrics for wing shape samples. Theoretical model of tearing wing shape samples of cotton woven fabrics was derived on the basis of: an occurrence of force distribution in the woven fabric tearing zone, parameters of this zone geometry and parameters of yarn and woven fabric structure. Literature survey revealed a need to develop such a model. Tests on tearing strength play an essential role in a complex evaluation of properties of woven fabrics for different applications. Proposed model of tearing allows describing all phenomena occurring in the woven fabric tearing zone and determining any relations between parameters, which are defined and described in the model. While developing the model of woven fabric tearing process its practical application in a fabric design was considered. Expecting that calculation process would be automated it was assumed that parameters, including model coefficients, should be derived from the data on yarn and woven fabric structure, which are easily available during designing, while the experimental determination of the other model parameters should refer to commonly used methods. To obtain specified research aims it was necessary to produce model woven fabrics of defined structural parameters and to carry out experiments presented in the research work plan. To analyze the geometry of woven fabric tearing zone and to define its parameters a computerized stand was designed and built. It allows analyzing the image and visualizing the tearing zone. The main parts of this stand are: tensile tester cooperating with a computer software test-Xpert, a digital camera and the software MicroStudio Video programme. The stand is universal as its elements can be adjusted, while analyzing the sample and registering the changes occurring in the woven fabric structure during tearing force propagation.

Słowa kluczowe

PL

tkanina bawełniana; wytrzymałość tkanin; rozdzieranie tkanin

EN

cotton fabric; resistance of cotton fabrics; tearing of cotton fabrics

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka
• Rocznik: 2009
• Tom: z. 65
• Strony: 119--142
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Witkowska B.

• Katedra Odzieżownictwa Politechniki Łódzkiej

Bibliografia

• [1] Greń, J.: Statystyka matematyczna. Modele i zadania, Wydanie VIII, PWN, Warszawa 1984, str. 200-203.
• [2] Hamkins, Ch., Backer, S.: On the Mechanisms of Tearing in Woven Fabrics, Textile Research Institute, No. 5/1980, str. 323-327.
• [3] Harrison, P.: The Tearing Strength of Fabrics - Part I: A Review of the Literature, Journal of Textile Institute 51, 1960, str. T91-T131.
• [4] Hager, O., B., Galiardi, D., D., Walker, H. B.: Analysis of Tear Strength, Textile Research Journal, No. 7/1947, str. 376-381.
• [5] Krook, C, M., Fox, K.,R.: Study of the Tongue Tear Test, Textile Research Journal, No. 11/1945, str. 389-396.
• [6] Niezgodziński, T.: Mechanika ogólna, PWN Warszawa 1999, str. 25-25 i 45-48.
• [7] Scelzo, W. A., Backer, S., Boyce, C: Mechanistic Role of Yarn and Fabric Structure in Determining Tear Resistance of Woven Cloth - Part I: Understanding Tongue Tear, Textile Research Journal, Vol. 64, No. 5/1994, str. 291-304.
• [8] Scelzo, W. A., Backer, S., Boyce, C: Mechanistic Role of Yarn and Fabric Structure in Determining Tear Resistance of Woven Cloth - Part II: Modeling Tongue Tear, Textile Research Journal, Vol. 64, No. 6/1994, str. 321-329.
• [9] Szosland J.: Podstawy budowy i technologii tkanin, WNT Warszawa 1979, str. 21.
• [10] Teixeira, N. A., Platt, M. M., Hamburger, W. J.: Mechanics of Elastic Performance of Textile Materials: Part XII: Relation of Certain Geometrie Factors to the Tear Strength of Woven Fabrics, Textile Research Journal, No. 10/1955; str. 838-861.
• [11] Taylor, H. M.: Tensile and Tearing Strength of Cotton Cloths, Journal Textile Research, Vol. 50, 1959, str. T151-T181.
• [12] Witkowska, B. Frydrych, L: A Comparative Analysis of Tear Strength Methods, Fibres & Textiles in Eastern Europe, Vol. 12, No 2(46)2004, str. 42-47.
• [13] Witkowska B., Kamińska L: Frydrych I.: Zastosowanie programu komputerowej analizy obrazu do rejestracji i oceny zjawiska statycznego rozdzierania w tkaninach bawełnianych, Przegląd Włókienniczy 2/2007.
• [14] Witkowska B., Frydrych L: Static Tearing - Part I: Its Significance in the Light of European Standards; Partii: Analysis of Stages of Static Tearing in Cotton Fabrics for Wing - Shaped Test Specimens, Textile Research Journal; Jun 2008; vol. 78: pp. 510-517 and Nov 2008; vol. 78: pp. 977-987.