Open Access Published by De Gruyter Open Access

Volume 22 Issue 1

March 2022

Issue of AUTEX Research Journal

Contents
Journal Overview

Open Access November 19, 2020

Design and Performance Evaluation of Protective Clothing for Emergency Rescue

Haitang Zhang, Qing Zheng, Ying Ke, Hongfu Wang, Min Wang, Yuanli Ye

Page range: 1-10

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Abstract

Protective clothing is very important to guarantee the safety of emergency rescuers. And proper construction design of clothing will improve the rescue efficacy. This study developed a new set of emergency rescue protective clothing (NC) and evaluated its performance. Clothing fit test, freedom of movement, and rationality of pocket tests were conducted. The results showed that the amount of slippage at the hem, waist of pants, and leg opening of NC has been greatly reduced. The NC had provided better cloth fit and dynamic comfort. The storage capacity of the pockets had been increased, the position and angle design of the pocket made it easier to take and keep the rescue tools.

Open Access July 10, 2020

Research into the Textile-Based Signal Lines Made Using Ultrasonic Welding Technology

Jacek Leśnikowski

Page range: 11-17

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Abstract

The article describes research into the transmission properties of textile signal lines (TSLs) made using ultrasonic welding technology. The presented TSLs are made from electroconductive, nickel coated, fabric strips welded between non-conducting textile layers. The article presents an analysis of the usability of the ultrasonic welding method for creating TSLs. This analysis shows that direct welding of an electroconductive path with the substrate increases its linear resistance, making it impossible to create a properly functioning line. This article presents an alternative method of creating the line using ultrasound welding technology.

Open Access March 10, 2022

Theoretical and Experimental Evaluation of Thermal Resistance for Compression Bandages

A. R. Aboalasaad, B. K. Sirková, T. Mansoor, Z. Skenderi, A. S. Khalil

Page range: 18-25

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Abstract

The objective of this paper is to report a study on the prediction of the steady-state thermal resistance of woven compression bandage (WCB) by using three different mathematical models. The experimental samples of WCB were 100% cotton, cotton–polyamide–polyurethane, and viscose–polyurethane. The bandage samples were evaluated at extensions ranging at 10–100%, with two- and three-layer bandaging techniques. Experimental thermal resistance was measured by thermal foot manikin (TFM) and ALAMBETA testing devices. The obtained results by TFM and ALAMBETA were validated and compared with the theoretical models (Maxwell–Eucken2, Schuhmeister, and Militky), and a reasonable correlation of approximately 78%, 92%, and 93% for ALAMBETA and 75%, 82%, and 83% for TFM, respectively, was observed.

Open Access October 2, 2020

Evaluation of Functional Insoles for Protective Footwear Under Simulated Use Conditions

Emilia Irzmańska, Katarzyna Majchrzycka, Izabella Krucińska, Michał Puchalski, Agnieszka Brochocka, Agnieszka Adamus-Włodarczyk

Page range: 26-34

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Abstract

The objective of the work was to study the properties of functional insoles for protective footwear using an original methodology by simulating the dynamic real-life conditions. Two insole variants were examined; both are made from a three-layer composite with the middle layer being a polypropylene melt-blown nonwoven. The variants differed in terms of the presence or absence of a superabsorbent polymer (SAP) and a biocide in the middle layer. Insole samples were subjected to pressure and examined in terms of the adsorption and desorption of acidic and alkaline liquids, followed by tear strength experiments. In addition, the insoles were placed in protective footwear and the microclimate existing inside the resulting system was determined using T/RH sensors by means of three complementary methods: under controlled climatic conditions, on a thermal foot model, and on human subjects. The results clearly indicate that insoles containing SAP are more effective than those without SAP in terms of both hygienic and mechanical properties.

Open Access July 17, 2021

Numerical Simulation of Fiber Motion in the Condensing Zone of Lateral Compact Spinning with Pneumatic Groove

Jindan Lyu, Longdi Cheng, Bugao Xu, Zhihong Hua

Page range: 35-41

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Abstract

Lateral compact spinning with pneumatic groove is a spinning process to gather fibers by common actions of airflow and mechanical forces. Compared with ring spinning, it can more effectively reduce yarn hairiness and enhance yarn strength. However, fiber motion in the agglomeration area is complex. And, it is important to establish a new fiber model to accurately describing the fiber motion. The objectives of this research were to create a new fiber model to simulate the agglomeration process, to analyze yarn properties of the lateral compact spinning with pneumatic groove, and to compare with other spinning yarns through a series of tests. The new fiber model was based on the finite element method implemented in MATLAB and was to show the fiber motion during the agglomeration area. The simulation generated results were close to the real motion of fibers in spinning. In the lateral compact spinning with pneumatic groove, fiber bundle through the agglomeration area can be gathered, and the output of the fiber bundle was nearly to cylinder before yarn twisted. The experiments demonstrated that the lateral compact spinning with pneumatic groove can improve the yarn properties: increase the yarn twist, enhance the yarn strength, and reduce the yarn hairiness.

Open Access March 10, 2022

Application of Physical Vapor Deposition in Textile Industry

Pamela Miśkiewicz, Iwona Frydrych, Agnieszka Cichocka

Page range: 42-54

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Abstract

Currently, scientists are striving to produce innovative textile materials characterized by special properties. Therefore, attempts have been made to use physical and chemical vapor deposition techniques to modify the surface of textile materials, i.e., nonwovens, fabrics, and knitted fabrics. By using these techniques for modifying the basic materials, researchers have obtained textiles with novel properties, which are used in shielding materials, textronics, or clothing, as well as in specialized accessories. The PVD process can be applied for almost all materials. The physical vapor deposition process allows for obtaining layers of different thicknesses and with various physical and chemical properties. This article is a review of the latest state of the art on the use of various methods of physical vapor deposition in textiles destined for different purposes.

Open Access January 5, 2021

Ag Coated Pa-Based Electro-Conductive Knitted Fabrics for Heat Generation in Compression Supports

Md. Reazuddin Repon, Daiva Mikučionienė, Ilze Baltina, Juris Blūms, Ginta Laureckiene

Page range: 55-63

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Abstract

This work deals with the electrically conductive textiles for heat generation in orthopedic compression supports. This study aimed to develop compression knitted structures with integrated electro-conductive yarns and investigate their heat generation characteristics and temperature changes during the time and under stretch which is required to generate compression. Combined half-Milano rib structured knitted fabrics were made by using silver (Ag) coated PA yarn of linear density of 66 tex and 235 tex, respectively. Six variants of specimens were developed by using different amount of electro-conductive yarns in a pattern repeat. It was found that stretch negatively influences temperature values as well as time in which the required temperature is reached. Therefore, the final wearing conditions have to be summed up during the designing of compression orthopedic heated supports.

Open Access April 29, 2020

Sensitivity of Aerodynamic Characteristics of Paraglider Wing to Properties of Covering Material

Paulina Maślanka, Ryszard Korycki

Page range: 64-72

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Abstract

The paper is theoretically oriented. The main goal is to analyze the sensitivity of aerodynamic characteristics to the properties of the material used for paraglider wing. The paraglider of considerable dimensions is designed without stiffening elements. Thus, the covering material yields adequate pressure distribution between the external and internal parts of the wing. The problem is solved using a geometrical model approximated by the dimensionless coordinates of crucial points and smoothed by spline curves. The finite volume mesh is defined using the Ansys Meshing program. Numerical analysis uses five different covering materials, ranging from the air-impermeable covering to the covering subjected to hydrolytic—mechanical degradation. Optimization of properties of the covering material improves the lift force and the aerodynamic characteristics of the wing. Moreover, numerical modeling is more beneficial and efficient than prototype tests. The obtained pressure distributions and other parameters explain the aerodynamic safety of the paraglider during dynamic conditions of flight.

Open Access November 6, 2020

Effects of Flocks Doping on the Dynamic Mechanical Properties of Shear Thickening Gel

Yuhao Tan, Yuling Li, Yanxue Ma, Bingjun Rao

Page range: 73-79

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Abstract

Polymethyl methacrylate (PMMA) was used as the dispersed phase and mold silicone was used as the continuous phase to prepare the shear thickening gel (STG) doped with a certain amount of flocks by rotary stirring. STG doped with flocks by a rotary rheometer was tested and observed through a scanning electron microscope. Results revealed that both the rotary stirring sample preparation and the rheological test method of the rotary rheometer could lead to the regular arrangement of flocks and could not reflect shear thickening performance accurately. The flocks showed a random arrangement in STG after the mixing process, and the dynamic mechanical properties were able to be measured with a dynamic mechanical analyzer (DMA). Flocks with a fineness of 3 Denier, 1 mm in length, and a mass ratio of 5% had significant effects on the dynamic mechanical properties of STG. Due to long continuous shearing time, flocks were arranged regularly when the sweeping frequency was higher than 125 Hz, then the shear thickening performance of the doped STG was declined.

Open Access October 10, 2020

Computer-Assisted Modeling and Design of Compression Garments with Graded Unit Compression

Krzysztof Kowalski, Magdalena Kłonowska, Witold Sujka, Ilona Latańska, Tomasz Marek Kowalski

Page range: 80-88

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Abstract

This article presents a useful algorithm for designing compression products with intended and graded unit pressure along the part of the body covered with the mentioned garments. The algorithm was developed using Laplace's law and a designated experimental function describing the relationship between strength and relative elongation of knitted fabric, and the results of 3D scanning of different body parts. On this basis, two examples of products in the form of a leg sleeve and arm sleeve were designed for the treatment of lymphoedema in compression classes II and III. The presented compression product design procedure facilitates the process of designing compression garments and eliminates some errors related to this procedure.

Open Access November 6, 2020

Numerical Investigation of Heat Transfer in Garment Air Gap

Yijie Zhang, Juhong Jia

Page range: 89-95

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Abstract

This article aimed to study the characteristics and mechanisms of 3D heat transfer through clothing involving the air gap. A three-dimensional finite volume method is used to obtain the coupled conductive, convective, and radiative heat transfer in a body-air-cloth microclimate system. The flow contours and characteristics of temperature, heat flux, and velocity have been obtained. The reason for the high flux and temperature regions was analyzed. Computational results show that the coupled effect of the air gap and the airflow between the skin and garment strongly influences the temperature and heat flux distribution. There are several high-temperature regions on the clothing and high heat flux regions on the body skin because the conductive heat flux can cross through the narrow air gap and reach the cloth surface easily. The high-speed cooling airflow brings about high forced convective heat flux, which will result in the temperature increase on the upper cloth surface. The radiative heat flux has a strong correlation with the temperature gradient between the body and clothing. But its proportion in the total heat flux is relatively small.

Open Access April 6, 2021

A Review on the Performance and Comfort of Stab Protection Armor

Dereje Berihun Sitotaw, Dustin Ahrendt, Yordan Kyosev, Abera Kechi Kabish

Page range: 96-107

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Abstract

Stab-protective clothing is the most important component of safety equipment and it helps to save the lives of its wearers; therefore, it is designed to resist knife, nail, or needle attacks, especially to the upper body. In this paper, the essential requirements for stab-resistant armor are investigated based on an in-depth review of previous research and prototype test results. The combination of protection and comfort in armor vests is a particularly challenging task. Review of the state of the art technology responsible for the manufacture of stab-resistant clothes has revealed that their design and development should encompass the elements of comfort, freedom of movement, permeability, absorption, evaporation, and weight reductions to ensure excellent ergonomics and high wear comfort. The design as well as the production, weight, thickness, material types and properties, and the arrangement of scales determine the level of protection and comfort offered by stab-resistant vests. Currently, the production of stab-proof gear-based 3D printing technology is evaluated, using lightweight materials (aramid) in the form of segmented scales inspired by nature. As the protection performance and wear comfort of stab-proof gear is enhanced, the willingness of security, control, transport, custom, and correction officers to wear them can be significantly increased in an endeavor to ensure that fatal injuries will decrease significantly.

Open Access January 29, 2021

A Novel Theoretical Modeling for Predicting the Sound Absorption of Woven Fabrics Using Modification of Sound Wave Equation and Genetic Algorithm

Valentinus Galih Vidia Putra, Irwan, Andrian Wijayono, JulianyNingsih Mohamad, Yusril Yusuf

Page range: 108-122

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Abstract

Woven fabric in Indonesia is generally known as a material for making clothes and it has been applied as an interior finishing material in buildings, such as sound absorbent material. This study presents a new method for predicting the sound absorption of woven fabrics using a modification of the wave equations and using genetic algorithms. The main aim of this research is to study the sound absorption properties of woven fabric by modeling using a modification of the sound wave equations and using genetic algorithms. A new model for predicting the sound absorption coefficient of woven fabric (plain, twill 2/1, rips and satin fabric) as a function of porosity, the weight of the fabric, the thickness of the fabric, and frequency of the sound wave, was determined in this paper. In this research, the sound absorption coefficient equation was obtained using the modification of the sound wave equation as well as using genetic algorithms. This new model included the influence of the sound absorption coefficient phenomenon caused by porosity, the weight of the fabric, the thickness of fabric as well as the frequency of the sound wave. In this study, experimental data showed a good agreement with the model

Open Access May 6, 2021

Modeling Supply Chain Sustainability-Related Risks and Vulnerability: Insights from the Textile Sector of Pakistan

Muhammad Hashim, Muhammad Nazam, Muhammad Zia-ur-Rehman, Muhammad Abrar, Sajjad Ahmad Baig, Muhammad Nazim, Zahid Hussain

Page range: 123-134

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Abstract

Sustainability-related risk and vulnerability management have attained significant attention from academia and industry. Manufacturing industries in developing countries such as Pakistan are under severe economic pressure and striving to boost sustainable supply chain practices for achieving business excellence. In this context, the objectives of the present research are to examine the critical supply chain risks associated with sustainable development goals, namely social, economic, and environmental factors. The failure mode and effect analysis (FMEA) technique is employed for categorizing the risk factors and Pareto analysis for highlighting the more crucial and risky factors. For this purpose, a large-scale survey was carried out in the textile industries of Pakistan to develop a risk mitigation model for sustainability-related risks and vulnerability in a textile supply chain (TSC). It captures the input expressions of experts for risk factors, namely severity (s), occurrence (o), and detection (d) for calculating the risk priority numbers (RPNs) of identified alternatives. The results depict that endogenous environmental risks categorize as the most significant for the textile manufacturing industries, and the interfaces between the various risks associated with sustainability-related are also found very high. This study would be a toolkit for the industrial managers and policy-makers for creating sustainable manufacturing culture on organizational premises.

Open Access November 6, 2020

Evaluation of Physical and Mechanical Properties of Cotton Warps Under a Cyclic Load of Stretch-Abrasion

Min Guo, Jianli Liu, Bo Zhu, Weidong Gao

Page range: 135-141

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Abstract

The fatigue behavior of cotton warps was studied by a newly weaving load simulator (WLS) developed in our laboratory. Reborn hairiness, strength retention, and elongation retention of sized warps were adopted to evaluate the physical and mechanical properties of sized warps under stretch-abrasion cyclic loading. The influences of different fatigue cycles on the above three indicators were also discussed. The results indicated that the fatigue behavior of the cotton warps accompanied by abrasion yields a three-parameter Weibull distribution. All the fitting plots show acceptable linearity. Moreover, there is a strong relationship of quadratic polynomial between the tensile properties and the fatigue cycle of the sized warps according to the scatter fitting (R 2 > 91.08%). Similarly, there is also a good relationship of quadratic polynomial between the reborn hairiness index and the fatigue cycle of the sized warps (R 2 > 94.51%). Finally, regardless of the strength retention, elongation retention, and reborn hairiness, the physical and mechanical properties of the cotton warps still change with the continuous increase of the fatigue cycle after 40% of the fatigue cycle, but it is not significant. The research was helpful to estimate the capacity of the warps to sustain failure.

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