Textile structures with electromagnetic shielding ability are widely used to attenuate the strength of fields, and their functionality is evaluated through direct measurement effectiveness. Depending on size shield measured frequency range, various test methods can be used. There still a need for development rapid testing procedure designed special materials where only small samples accessible. The paper presents new convenient effectiveness measuring based modified shielded box method....

This study explores and discusses the design, manufacturing morphology of three-dimensional (3D) multilayered weft interlaced woven fabrics using stainless steel fibers on electromagnetic shielding efficiency (SE). Design solutions 3D in relation to are still not sufficiently investigated. Moreover, this aims analyze differences internal geometry with different number layers frequency connecting points SE. For study, input staple yarn 2 × 20 tex (mixed 80 % polyester/20 fibers) is used for...

Today, microplastics are found in soil, air, and all water sources, including rivers, groundwater, treated drinking water, with the majority originating from wastewater produced during washing process. The aim of this study is to determine how standard washing, drying, wearing simulated by mechanical abrasion 100% polyester multifilament fleece knitted fabrics contribute release formation fibrous fragments determining changes their total weight, thickness, dimensions, relative surface area....

This paper deals with experimental verification of numerical models fabric shielding effectiveness especially via analysis leakage through the apertures (pores) in textile structure. Equations for both solid shield and non-compact material were adopted from literature, whereas an aperture equation based on waveguide conception was used. The sample set woven fabrics made hybrid yarns composed polypropylene fibers different contents staple stainless steel metal their Geometrical...

At present, much attention is focused on developing clothing fabrics with advanced functionality without compromising their visual, mechanical, or comfort properties. A fabric’s ability to prevent the penetration of electromagnetic radiation an interesting added feature. In published literature, there are many references describing development and investigation shielding textile structures using different electrically conductive additives. However, little has been given aesthetic properties...

A textile material's electromagnetic interference (EMI) shielding effectiveness mainly depends on the electrical conductivity and porosity. Enhancing of material surface can effectively improve effectiveness. However, use highly conductive materials increases production cost, limits enhancement This work aims to EMI (EMSE) by using an ultrathin multilayer structure air-permeable MEFTEX. MEFTEX is a copper-coated non-woven fabric. The single-layer SE test results show that higher its mass per...

The shear behavior of 3D spacer knitted fabrics was investigated by using a picture frame fixture. Three different methods were used to find the angle during loading rate 10 mm/min. All tests recorded CCD monochrome camera. images acquired process for analysis in order obtain full-field displacement and angles at chosen points on surface test specimen. An experimental analytical investigation fixture conducted determine its suitability measuring intra-ply properties fabrics. In this work,...

This paper deals with a procedure that recognizes common defects occurring in woven fabric. Images of fabric are considered as having directional texture due to their periodical nature. We used statistical approach based on the analysis periodicity images horizontal and vertical directions. These periodicities correspond second-order grey level features obtained from co-occurrence matrix. A set five significant is extracted matrix: energy, correlation, homogeneity, cluster shade prominence....

Analysis of textile materials often includes measurement structural anisotropy or directional orientation object systems. To that purpose, the real-world objects are replaced by their images, which analyzed, and results this analysis used for decisions about product(s). Study image data allows one to understand contents perform quantitative qualitative description interest. This paper deals in particular with problem estimating main fiber Firstly, we present a concise survey methods suitable...

In this paper, a control chart is introduced for monitoring various defect types occurring on chenille yarns. To implement the chart, grey level image of yarn captured as an matrix. Image preprocessing applied and involves thresholding to binary morphological opening operation removing small objects from image. The height pile yarn, measured processed images, selected monitored quality characteristic. Since characteristic was highly autocorrelated, first-order autoregressive AR(1) model...

Image analysis methods are widely used tools for an objective pilling evaluation. However, due to their intrinsic limitations, simple image of digital photographs is not a suitable procedure the evaluation fabrics with complex structures and distinct patterns. Generally, fabric pattern or structure have presented significant problem pills detection. This paper describes system unicolor even The main points include 3D surface reconstruction from shading based on gradient field method, using...

Intrinsically conducting polymer polypyrrole/polyester textile composites were prepared by in situ chemical oxidative polymerization of polypyrrole on a polyester fabric. As an oxidizing agent ferric chloride was used, p-toluenesulfonic acid used as dopant. Polymerization conditions (concentration monomer, time and temperature) investigated optimized the help Design experiment methodology to obtain fabric with electromagnetic shielding efficiency at least 12 dB for frequency 1.5 GHz....

The objective of the present study was to investigate effect coating different concentrations and pH aqueous casein suspension on thermo-oxidative properties, flame retardant behavior as well physiological comfort cotton fabrics. found increase with in concentration both alkaline acidic conditions. burning rate 2.1 mm/s 2.4 measured for samples 150 g/L suspensions pH, respectively. Moreover, better properties were obtained prepared than pH. produced 19% 28% residue, respectively at 600℃....

Today we can’t imagine our life without electricity and technology, transport television. In the information age, computers, Internet, cell phones, smartphones are helpers for everyday needs. However, environment comfortable living in it can be detrimental to health. It is hard realize fact that such a global technical breakthrough has hit human Exposure electromagnetic radiation could lead changes structure of nerve cells blood formulas, deformation circulatory system, pathology endocrine...

The rapid development of fiber optic technology has enriched smart wearable technology. Standard (end emitting) polymer optical fibers(EEPOF)are linear and flexible, which is feasible to integrated them into textiles applied curved parts the human body for achieving individualized functionality (e.g., safety light-emitting garments, photo-therapeutic textiles, fashionable displays, sensing apparel monitoring etc.). However, luminance EEPOF-incorporated fabric should be improved. In this...

This article examines the effect of membrane type and its morphology on chosen thermo-physiological properties middle layer outdoor clothing. In total four different membranes were selected for production analysis three-layer laminates, which could replace second third layers layered clothing sports/outdoor purposes. As an outer lining material a polyester knitted fabric with fleece was chosen, whereas lamination technology used to join individual layers. Chosen affecting comfort laminates...

The objective of this work is to study the in-plane shear behavior 3D warp-knitted spacer knitted fabrics by using a picture frame fixture. This part aims investigate effects structural parameters on stress and energy absorption fabrics. A group was produced double-needle bar Raschel machine varying their including yarn fineness, fabric thickness, outer layer structure. properties were tested analyzed based nonlinear versus angle deformation mechanism. During loading process, series surface...

This study proposes a methodology that enables the comparison of textile materials from point view corresponding comfort. Although this focuses on used for construction car seats, approach can be more broadly. First, different aspects, which are or less closely connected with our problem, discussed. Among them, two characteristics, i.e. temperature conductivity and breathability, important. Second, we discuss why it is important to have conclusions about comfort based not only subjective...

The work analyses intra-jet distances during electrospinning from a free surface of water based poly(vinyl alcohol) solution confined by two thin metallic plates employed as spinning electrode. A unique computer vision system and digital image processing were designed in order to track position every polymer jet. Here, we show that jet data are good compliance with theoretically predicted linear stability analysis. Jet density is critical parameter technology, since it determines the process...