Open Access Published by De Gruyter Open Access

Volume 15 Issue 3

September 2015

Issue of AUTEX Research Journal

Contents
Journal Overview

Open Access September 23, 2015

Yarn-Dyed Fabric Defect Detection Based On Autocorrelation Function And GLCM

Dandan Zhu, Ruru Pan, Weidong Gao, Jie Zhang

Page range: 226-232

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Abstract

In this study, a new detection algorithm for yarn-dyed fabric defect based on autocorrelation function and grey level co-occurrence matrix (GLCM) is put forward. First, autocorrelation function is used to determine the pattern period of yarn-dyed fabric and according to this, the size of detection window can be obtained. Second, GLCMs are calculated with the specified parameters to characterise the original image. Third, Euclidean distances of GLCMs between being detected images and template image, which is selected from the defect-free fabric, are computed and then the threshold value is given to realise the defect detection. Experimental results show that the algorithm proposed in this study can achieve accurate detection of common defects of yarn-dyed fabric, such as the wrong weft, weft crackiness, stretched warp, oil stain and holes.

Open Access September 23, 2015

Nanostructural Biochemical Modification Of Flax Fiber In The Processes Of Its Preparation For Spinning

Sergey Koksharov, Svetlana Aleeva, Olga Lepilova

Page range: 215-225

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Abstract

The elaborated principles of nanoengineering of linen textile materials implement the techniques of spatially localized effects of protein catalysts on polymeric cellulose companions with selective splitting of impurity compounds without damaging technologically necessary nano-sized formations of binders in the fiber structure. The ranges of optimal values of the residual content in flax fiber prepared for spinning are identified on the basis of the analysis of the successive stages of enzymatic and peroxide treatments contribution to the breakdown of polymers and the differentiation of the influence of impurities on the yarn technological properties. The recommended level of residual pectin, lignin and hemicellulose (wt. %) is: after enzymatic treatment P 1 = 1,0±0,1; L 1 = 3,9±0,3; Hc 1 = 11,0±1,0; after peroxide bleaching P 2 = 0,4±0,05; L 2 = 2,3±0,3; Hc 2 = 7,5±0,5. The required level of fiber structural modification at the stage of preparing roving for spinning can be achieved through use of protein catalysts whose globule size is 50...100 nm. The use of enzymes with these dimensional characteristics helps to ensure breaking of polymer adhesives on the surface of incrusts and in the areas of intercellular formations, which hinder fiber crushing, without damaging nano-sized binding fractions. The implementation of this method contributes to a significant improvement in the uniformity of structural and physical and mechanical properties of flax yarn. Increase in yarn fineness and strength properties of semi-finished products, as well as improvement of deformation properties and reduction of yarn breakages during the spinning processes are achieved.

Open Access September 23, 2015

The Effect Of Weave Construction On Tear Strength Of Woven Fabrics

Selin Hanife Eryuruk, Fatma Kalaoğlu

Page range: 207-214

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Abstract

The tear strength of a woven fabric is very important, since it is more closely related to serviceability of the fabric. Tearing strength of the fabrics depend on the mobility of the yarn within the fabric structure. In this study, the tearing strength of four types of fabrics warp rib, weft rib, ripstop and plain weave were analysed, which were produced in different densities and with filament and texturised polyester yarns.

Open Access September 23, 2015

Mechanical Properties Of Traditional And Nanofibre Textiles

Petr Ursíny, Martin Bílek, Eva Moučková, Martina Pokorná, Petr Tumajer, Jakub Wiener

Page range: 198-206

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Abstract

This study deals with a comparison of mechanical properties of a conventional yarn and a textile from nanofibres. The conventional yarn represents the textile objects with high degree of orientation of fibres and the textile from nanofibres represents the textile objects with low degree of orientation of fibres. The theoretical section is concerned with the issue of internal structure of plied yarn and resulting differences in the orientation and straightening of fibres and in utilisation of deformation properties of fibres in comparison to the referred nano textile. The experimental section describes the manner of realisation of both static and dynamic tests of conventional yarn and strips of nanofibres. The results show differences in the mechanical properties of conventional yarn and textile strip from nanofibres under static and dynamic loading conditions. The processing technology of conventional yarn has been verified in the long term. But textiles from nanofibres are a relatively new material and mechanical properties of the detected differences point out possible problems with their behaviour during standard technological processes.

Open Access September 23, 2015

Knitting Technologies And Tensile Properties Of A Novel Curved Flat-Knitted Three-Dimensional Spacer Fabrics

Xiaoying Li, Gaoming Jiang, Xiaolin Nie, Pibo Ma, Zhe Gao

Page range: 191-197

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Abstract

This paper introduces a knitting technique for making innovative curved three-dimensional (3D) spacer fabrics by the computer flat-knitting machine. During manufacturing, a number of reinforcement yarns made of aramid fibres are inserted into 3D spacer fabrics along the weft direction to enhance the fabric tensile properties. Curved, flat-knitted 3D spacer fabrics with different angles (in the warp direction) were also developed. Tensile tests were carried out in the weft and warp directions for the two spacer fabrics (with and without reinforcement yarns), and their stress–strain curves were compared. The results showed that the reinforcement yarns can reduce the fabric deformation and improve tensile stress and dimensional stability of 3D spacer fabrics. This research can help the further study of 3D spacer fabric when applied to composites.

Open Access September 23, 2015

Protective Footwear And The Risk Of Slipping In Older Workers – Definitions, Achievements, Recommendations

Emilia Irzmańska

Page range: 181-190

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Abstract

Foot slippage is the most widespread unforeseen event causing falls on the same level, and a potentially contributing factor to falls from height and falls to a lower level. Statistical data on the number of slip-related accidents at work show the importance of the problem of slipping and indicate the need to continuously improve preventive measures designed to reduce injuries related to slipping, tripping, and falling (STF) on the same level. It is therefore necessary to continuously and insightfully analyze the causes of falls and undertake efforts to eliminate the occurrence of slip- and trip-induced workplace accidents. The occurrence of slips and trips is primarily related to the type and quality of floor surfaces, but it also depends on the biomechanical characteristics of the lower limbs in the transitional phases of walking gait, sole material and tread, human factors such as age, weight, and motor and vision function, the ability to adapt to the floor surface conditions, as well as on a number of factors linked to the workplace environment and work organization. This problem is going to escalate as a result of the higher retirement age, due to which many persons over the age of 60 will have to continue working, often in hazardous conditions.

Open Access September 23, 2015

Investigation Of Sound Absorption Properties Of Bark Cloth Nonwoven Fabric And Composites

Samson Rwawiire, Blanka Tomkova, Eulalia Gliscinska, Izabella Krucinska, Marina Michalak, Jiri Militky, Abdul Jabbar

Page range: 173-180

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Abstract

The quest for sound-absorbing materials that are not only environmentally friendly, but also sustainable is the foremost reason for natural fibre-acoustic materials. Bark cloth is a natural non-woven fabric that is largely produced from Ficus trees. An exploratory investigation of bark cloth a non-woven material and its reinforcement in epoxy polymer composites has been fabricated and investigated for the sound absorption properties so as to find the most suitable applications and also to see whether bark cloth can be used in some applications in place of man-made fibres. Three types of material species were investigated with their respective composites. The fibre morphology showed bark cloth to be a porous fabric that showed promising sound absorption properties at higher frequencies. The sound absorption results of four-layer material selections of Ficus natalensis, Ficus brachypoda and Antiaris toxicaria bark cloth showed sound absorption coefficient of 0.7; 0.71 and 0.91 at f > 6400 Hz, respectively. The bark cloth reinforced laminar epoxy composites had reduced sound absorption coefficients, which ranged from 0.1 to 0.35, which was attributed to decreased porosity and vibration in the bark cloth fibre network.

Open Access September 23, 2015

Preparation And Properties Of Bionanocomposite Films Reinforced With Nanocellulose Isolated From Moroccan Alfa Fibres

Benyoussif Youssef, Aboulhrouz Soumia, El Achaby Mounir, Cherkaoui Omar, Lallam Abdelaziz, El Bouchti Mehdi, Zahouily Mohamed

Page range: 164-172

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Abstract

Nanocellulose (NC) were extracted from the Moroccan Alfa plant (Stipa tenacissima L.) and characterised. These Alfa cellulosic nanoparticles were used as reinforcing phase to prepare bionanocomposite films using carboxymethyl cellulose as matrix. These films were obtained by the casting/evaporation method. The crystallinity of NC was analysed by X-ray diffraction, the dimension of NC by atomic force microscopy, molecular interactions due to incorporation of NC in carboxymethyl cellulose (CMC) matrix were supported by Fourier transforms infrared (FTIR) spectroscopy. The properties of the ensuing bionanocomposite films were investigated using tensile tests, water vapour permeability (WVP) study and thermogravimetric analysis. With the progress of purification treatment of cellulose, the crystallinity is improved compared to the untreated fibres; this can be explained by the disappearance of the amorphous areas in cellulose chain of the plant. Consequently, the tensile modulus and tensile strength of CMC film increased by 60 and 47%, respectively, in the bionanocomposite films with 10 wt% of NC, and decrease by 8.6% for WVP with the same content of NC. The NC obtained from the Moroccan Alfa fibres can be used as a reinforcing agent for the preparation of bionanocomposites, and they have a high potential for the development of completely biodegradable food packaging materials.

Open Access September 23, 2015

Dye Removal From Textile Waste Water Through The Adsorption By Pumice Used In Stone Washing

Aysegül Ekmekçi Körlü, Saadet Yapar, Seher Perinçek, Hatice Yılmaz, Cem Bağıran

Page range: 158-163

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Abstract

Because the waste production is inevitable in almost all industries, the elimination of these wastes is a requirement in terms of environmental regulations and welfare of all the creatures in the future. In this study, the use of the waste pumice stones of a denim washing mill is intended to eliminate the pollutant by a waste material and obtain economic benefits by converting it to the adsorbent. The pollutants in the effluents obtained from three different localisations of waste water treatment system of the same factory were removed through the adsorption. The experimental studies were carried out in three different steps; characterisation of adsorbent before and after adsorption; adsorption isotherm studies and biological oxygen demand (BOD), chemical oxygen demand (COD) measurements. Characterisation studies showed that the waste pumice has almost the same structural properties with unused one except the existence of some organic residues coming from washing process. The results of adsorption studies conducted at the adsorbent concentrations changing from 5 to 35 g/l revealed that the decolourisation was initial dye-concentration dependent. According to the BOD and COD measurements, the supernatants obtained at the end of adsorption could be assumed as somewhat polluted and this result indicates that the organic impurities other than indigo were also removed through the adsorption.

Open Access September 23, 2015

Design Methodology And Performance Studies Of A Flexible Electrotextile Surface

Ozan Kayacan, Özlem Kayacan, Ender Bulgun, Burçin Eser, Maşuk Pamuk

Page range: 153-157

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Abstract

‘The smart textiles’ concept has to develop products based not only on design, fashion and comfort but also in terms of functions. The novel electro-textiles in the market open up new trends in smart and interactive gadgets. ‘Easy to care and durability’ properties are among the most important features of these products. On the other hand, wearable electronic knitwear has been gaining the attention of both researchers and industrial sectors. Combining knitting technology with electronics may become a dominant trend in the future because of the wide application possibilities. This research is concerned primarily with the design methodology of knitted fabrics containing electrically conductive textiles and especially in-use performance studies. The structural characteristics of the fabrics have been evaluated to enhance the performance properties.

About this journal

AUTEX Research Journal is published by De Gruyter on behalf of the Association of Universities for Textiles (AUTEX)

Objective

The AUTEX Research Journal (AUT) is a leading open access, peer reviewed scientific journal dedicated to textile science and technology. AUT disseminates high-quality scientific knowledge related to textile-based materials and products, including topics like fibers, fibrous structures, functionalization, design, and manufacturing. Due to their unique properties and behaviour, fiber-based materials, in general, have substantially enlarged their range of applications in areas like health care and well-being, aeronautics and aerospace, defence, architecture, building and sports. In fact, the possibility of tuning their properties from nano to macro scale to obtain multifunctional and smart textiles is opening new opportunities to develop advanced solutions, traditional and non-traditional applications.

Topics

AUTEX Research Journal accepts high level scientific contributions on the following topics:

Advanced Fibres and Materials
Innovative Functional Textiles
Technical Textiles, Composites and Membranes
Protective Textiles
Medical Textiles, Tissue Engineering, Implants
Smart, Interactive and Multifunctional Textiles
Textile Processing,
Innovative Textile Structures
Nanotechnology, Nanotextiles, Electrospinning
Biopolymers and Biotechnology
Surface Functionalization and Coating
Textile and Clothing Machinery
Textile Testing, Measuring Technology
CAD/CAE-Technology, Mass Customisation
Modelling and Simulation
Comfort Science
Ecological and Environmental Textiles, Recycling and Life Cycle Analysis

Article Formats

We welcome submission of original research articles and invited review articles.

Your Benefits

One of the few journals dealing with textiles research at a global level
Clear review and publishing procedure
Open Access publication, ensuring widest possible dissemination of your research
Discounted APCs for AUTEX Association members
Authorized journal of AUTEX – The Association of Universities for Textiles