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Analiza absorpcji promieniowania IR przez tkaniny w kontekście niektórych aspektów strukturalnych i surowcowych. Cz. I

Polipowski M., Pinar A.

Przegląd Włókienniczy - Włókno, Odzież, Skóra

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2016

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nr 7

18--21

EN

The studies on the IR absorption for woven fabrics show that the phenomenon of reflection and transmission of IR is influenced by, among others, the structure of thread channels resulting from the type of weave, sett of warp and weft and the structure of the yarn. Significant factors are also a raw material, surface weight and thickness of a woven fabric as well as its color and finish. Further research enabled to determine the geometric parameters of the channels between threads (height of the channel, channel spacing surface area, angle of channel deviation from the vertical position) and establish the relationship between these parameters. A coefficient of spacings of woven fabric surface was introduced, which is the ratio of the channel spacing surface area to the total surface area of the woven fabric. For a single channel and for the entire image of woven fabric seen an approximate volume of a single channel and channels of visual image was determined. The results of the research refer to the standard woven fabrics and woven fabrics with yarn of barrier effect against IR. The article is a summary of previous research in this field and suggests the possibility of more precise selection of important structural and geometrical factors, as well as those related to raw materials of woven fabrics, that affect the ability of IR absorption and thus the shaping of the properties of flat textile products, through a creation barriers for IR radiation. Many dependencies associated with a variety of material structure, i.e. its structure, construction, porosity, physical and mechanical parameters and complexity of shapes of the channels between threads makes it difficult to describe the phenomena arising as result of IR absorption by woven fabrics. At this stage, an attention was drawn to the dependence of the spatial structure of fabric, among others, the size of the channels between threads and raw material composition on the size of the transmission and IR reflection. There is a need to continue research channels between threads and the filamentary yarn and the development of the channel model between threads. There is also a need for more research on the selection of raw materials warehouse and dyes and chemical additives for flat textile products.

2

Analiza absorpcji promieniowania IR przez tkaniny w kontekście niektórych aspektów strukturalnych i surowcowych. Cz. II

Polipowski M., Pinar A.

Przegląd Włókienniczy - Włókno, Odzież, Skóra

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2016

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nr 8

26--30

EN

The studies on the IR absorption for woven fabrics show that the phenomenon of reflection and transmission of IR is influenced by, among others, the structure of thread channels resulting from the type of weave, sett of warp and weft and the structure of the yarn. Significant factors are also a raw material, surface weight and thickness of a woven fabric as well as its color and finish. Further research enabled to determine the geometric parameters of the channels between threads (height of the channel, channel spacing surface area, angle of channel deviation from the vertical position) and establish the relationship between these parameters. A coefficient of spacings of woven fabric surface was introduced, which is the ratio of the channel spacing surface area to the total surface area of the woven fabric. For a single channel and for the entire image of woven fabric seen an approximate volume of a single channel and channels of visual image was determined. The results of the research refer to the standard woven fabrics and woven fabrics with yarn of barrier effect against IR. The article is a summary of previous research in this field and suggests the possibility of more precise selection of important structural and geometrical factors, as well as those related to raw materials of woven fabrics, that affect the ability of IR absorption and thus the shaping of the properties of flat textile products, through a creation barriers for IR radiation. Many dependencies associated with a variety of material structure, i.e. its structure, construction, porosity, physical and mechanical parameters and complexity of shapes of the channels between threads makes it difficult to describe the phenomena arising as result of IR absorption by woven fabrics. At this stage, an attention was draw to the dependence of the spatial structure of fabric, among others, the size of the channles between threads and raw material composition on the size of the transmission and IR reflection. There is a need to continue research channels between threads and the filamentary yarn and the development of the channel model between threads. There is also a need for more research on the selection of raw materials warehouse and dyes and chemical additives for flat textile products.

3

Effect of Velocity of the Structure-Dependent Tension Wave Propagation on Ballistic Performance of Aramid Woven Fabricslication

Stempień Z.

Fibres & Textiles in Eastern Europe

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2011

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Vol. 19, no. 4 (87)

74--80

EN

One of the elements defining the effectiveness of soft ballistic protection is the geometric structure of the fabric. In previous research works it was proven that the geometric structure influences the propagation velocity of the tension wave. Thus, fabrics of a geometric structure ensuring a maximum propagation velocity of the tension wave should be selected for the ballistic packets of bullet-proof vests. In such a case, the area of deformation will be larger, which will diminish the probability of local destruction and the acuteness of the ballistic stroke on the user’s body. The aim of the research was to receive a ballistic packet containing layers of fabric ensuring a maximum propagating velocity of the tension wave and verification of its ballistic performance in terms of shooting through, maximum deformation and the ballistic stroke.

PL

Jednym z elementów decydujących o skuteczności miękkich osłon balistycznych jest struktura geometryczna tkaniny. We wcześniejszych badaniach wykazano, że struktura geometryczna ma wpływ na prędkość propagacji fali naprężeń. Istnieje zatem pełne uzasadnienie wyboru struktury geometrycznej tkaniny o maksymalnej prędkości propagacji fali naprężeń na warstwy pakietów balistycznych kamizelek kuloodpornych. W takim przypadku obszar objęty procesem odkształcania będzie rozłożony na większej powierzchni, co zmniejszy możliwość miejscowej destrukcji i wielkość udaru balistycznego na korpus użytkownika. Celem realizowanych badan było uzyskanie pakietu balistycznego zawierającego w swoich warstwach tkaniny o maksymalnej prędkości propagacji fali naprężeń oraz jego weryfikacja balistyczna uwzględniająca efekt przestrzelenia, maksymalną deformację oraz wielkość udaru balistycznego.

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Analysis of Dependencies of Woven Fabric’s Breaking Force and Elongation at Break on its Structure Parameters

Kumpikaite E.

Fibres & Textiles in Eastern Europe

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2007

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Vol. 15, no. 1 (60)

35--38

EN

In this article, the woven fabric weave factor P1 and the integrated fabric structure factor φ, suggested by Milašius, are described. Their qualities are emphasised in comparison with other woven fabric factors. The research results of the woven fabric structure’s influences on its breaking force and elongation at break are also presented in this article; in other words, the dependence of the above-mentioned woven fabric factors on these parameters are presented. The research performed shows that there is no correlation between the weave factor and woven fabric breaking force, although the range of resulting points is wide. As the woven fabric rigidity of weave increases, the weave factor P1 decreases, and the woven fabric elongation at break increases. The integrated fabric structure factor φ which evaluates all parameters of the fabric structure, such as warp and weft materials, warp and weft linear densities, warp and weft settings and the fabric weave, also has similar tendencies of dependence.

PL

W artykule przedyskutowano stosowanie współczynnika splotu P1 oraz zespolonego współczynnika strukturalnego φ zaproponowanego przez Milašiusa. Ich zalety zostały podkreślone w porównaniu z innymi współczynnikami opracowanymi dla tkanin. Przeprowadzono analizę wpływu struktury tkanin na siłę zrywającą i wydłużenie przy zerwaniu, a więc także na zależność tych parametrów od dyskutowanych współczynników. Stwierdzono, że nie ma korelacji pomiędzy współczynnikiem splotu a siłą zrywającą, pomimo dużego zakresu przebadanych wartości. Przy wzroście sztywności tkaniny współczynnik splotu tkaniny P1 zmniejsza się, a wydłużenie przy zerwaniu rośnie. Zespolony współczynnik strukturalny φ wykazuje podobne tendencje zależności, co pozwala na ocenę wszystkich parametrów struktury tkaniny, w tym takich jak liczność osnowy i wątku oraz zastosowany splot.

5

Modelling the structural barrier ability of woven fabrics

Szosland J.

Autex Research Journal

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2003

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Vol. 3, no. 3

102--110

EN

Woven fabrics with their full, systematically arranged and non-stochastic structure, are the subject of increasing interest as barriers to fluids, radiation, micro-particles, and micro-organisms. The structure of woven fabrics, which is characterised by inter-thread channels of predetermined shape and location, is especially important. Some procedures for designing channel shape and methods for sealing barrier woven fabrics are presented.