Zbigniew Stempien

Zbigniew Stempien
Lodz University of Technology · Institute of Textile Architecture, Department of Clothing Technology and Textronics

Assoc. Prof.

About

41
Publications
8,112
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441
Citations

Publications

Publications (41)
Article
Full-text available
Behind armour blunt trauma (BABT) is a body injury resulting from the deformation of the back surface of armour as a result of a bullet impact. In the case of textile body armour, the severity of the injury may depend on the material of the fibres, but also on the geometric structure of the fabric. The article focuses on experimental research into...
Article
Full-text available
Textile ballistic shields are the basis of protection against bullets and fragments with low kinetic energy. They are usually made of para-aramid fabrics or unidirectional structure (UD) sheets of ultra-high molecular weight polyethylene (UHMWPE). The aim of the research presented in the article was to obtain ballistic packages made of embroidered...
Article
Full-text available
The paper presents the results and analysis of interdisciplinary research concerning electromagnetic field shielding, conductive polymers printed on textiles and numerical simulation using the finite element method (FEM). The use of conductive, layered textiles for shielding electromagnetic interference (EMI) has been proposed. After establishing t...
Article
Full-text available
In this work, we propose a novel method for the preparation of polypyrrole (PPy) layers on textile fabrics using a reactive inkjet printing technique with direct freezing of inks under varying temperature up to −16 °C. It was found that the surface resistance of PPy layers on polypropylene (PP) fabric, used as a standard support, linearly decreased...
Article
Full-text available
The objective of this study is a comparative analysis of the ballistic effectiveness of packages made of biaxial and triaxial Kevlar 29 fabrics under hitting of Parabellum 9x19 bullet. We conduct both numerical simulations using the LS-Dyna program and experimental research in a ballistic research laboratory. Based on the comparative analysis of th...
Article
Full-text available
In the article a description of the behaviour of metallic layers created in the process of physical vacuum deposition on a composite textile substrates during their cyclical bending process is presented. Either the results of experimental research or the theoretical considerations of changes in the structure resistance as a function of the number o...
Article
In this work, a reactive inkjet printing (RIP) has been proposed as an useful method for the deposition of reduced graphene oxide (RGO) layers on different textile fabrics - polyacrylonitrile, poly(ethylene terephthalate), and polypropylene. Under the RIP process, the RGO layers were grown on fabrics by printing of graphene oxide (GO) suspension an...
Article
In this work, a reactive inkjet printing (RIP) has been proposed as an useful method for the deposition of reduced graphene oxide (RGO) layers on different textile fabrics - polyacrylonitrile, poly(ethylene terephthalate), and polypropylene. Under the RIP process, the RGO layers were grown on fabrics by printing of graphene oxide (GO) suspension and...
Conference Paper
Full-text available
The impact response of soft ballistic packages shielding a standard substrate Roma No. 1 and block of Clear Ballistic Gel has been experimentally analyzed. They are a surrogate models for studying injuries to human torso caused by a bullet striking body protection armor placed on a person. Photographs taken with a high speed camera are used to dete...
Article
This work describes the fabrication of printed gas sensors on textile substrates by using the reactive inkjet printing technique. Polyaniline (PANI), polypyrrole (PPy) and reduced graphene oxide (rGO) based gas sensing layers were printed on top of gold electrodes which were vacuum deposited on polypropylene textile non-woven fabric. The sensing pr...
Article
This work is a follow-up study for a recently-proposed 3D radiochromic gel dosimeter that contains a tetrazolium salt and a physical gel matrix made of poly(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) (Pluronic F-127). Several tetrazolium salts were examined in this work, including tetrazolium violet (TV), blue tetrazoliu...
Article
This paper presents the continuation of research on shielding efficiency (SE) of electromagnetic radiation (EMR) by woven fabric made of cotton (warps and wefts) and a hybrid yarn (wefts). This hybrid yarn was made of stainless steel yarn by Bekinox wrapped with an enamelled copper wire from Synflex Elektro GmbH, Germany. The pitch of copper coil o...
Article
In this work, we present for the first time three-dimensional (3D) gel dosimeters for 3D UV dose distribution measurements. These new gel dosimeters are aqueous compositions containing 2,3,5- triphenyltetrazolium chloride or 4,40-benzylidenebis(N,N-dimethylaniline) (leucomalachite green) and poly(ethylene oxide)-block-poly(propylene oxide)-block-po...
Article
The inkjet-printing technique was used to deposit a commercial silver nanoparticle ink in order to fabricate the electro-conductive layers directly on the different natural, synthetic, blend and mineral textile fabric surfaces with simultaneous sintering at 130C during printing process. This modification eliminated the necessity of sintering of sil...
Article
Full-text available
The aim of the study was to verify whether the construction of a specific hybrid yarn con-taining a ferromagnetic core and electroconductive wire introduced into woven fabric will improve the shielding effectiveness (SE) in comparison with reference fabrics made of the same raw materials but introduced into woven fabrics as plain wefts, not twisted...
Article
This study reports the simple, inexpensive, and in situ deposition of polyaniline (PANI) on polyacrylonitrile (PAN) woven fabric with the reactive ink-jet printing technique aimed at the manufacturing of multilayered electromagnetic interference (EMI) shields. The electrical characteristics of fabric samples are measured by the van der Pauw method...
Article
A simple and original method for the deposition of poly (3,4-ethylenedioxythiophene) (PEDOT) on different synthetic textile fabrics by the reactive inkjet printing technique was proposed. PEDOT coated conducting fabrics were obtained by chemical oxidation of an arbitrarily chosen and constant concentration of 3,4-ethylenedioxythiophene (EDOT) of 0....
Conference Paper
Among new areas of electronics the systems integrated with textile materials (textronics systems) grow particularly rapidly due to special properties like flexibility, low mass, and most of all, the possibility of integration with clothing, what guarantees their direct contact with the human body. Textronic systems can be developed by the intrinsic...
Article
Full-text available
The selection of the appropriate number of layers of textile ballistic package, in order to meet the required safety criteria according to the accepted class of bullet-proofness, is implemented mainly on the basis of experimental research in the ballistic tunnel using a normalised ballistic substrate. The paper presents an approach to the selection...
Article
Abstract The main problem in preparing stable and printable inks for the inkjet printing of textile substrates is in overcoming their roughness and high sintering temperature. In this study, the modified Tollens’ process for the preparation of a suitable water-soluble ink containing silver for the inkjet printing of textile substrates as a tool for...
Article
A facile and original method of deposition of polyaniline (PANI) and polypyrrole (PPy) by reactive ink-jet printing on different textile fabrics is proposed. Polyaniline- and polypyrrole-coated conducting fabrics were obtained by chemical oxidation of aniline hydrochloride or pyrrole by ammonium peroxydisulfate on polyacrylonitrile (PAN), cotton, p...
Conference Paper
Full-text available
The textile body armor is an important element of the equipment of every policemen, soldier or security officer. The aim of presented research was a numerical analysis of ballistic trauma in dependendance of ballistic performance of textile body armor and parameters of bullet. The model of human torso was developed with using computer tomography im...
Conference Paper
Full-text available
Streszczenie Kamizelka kuloodporna jest nieodzownym elementem wyposażenia dla policjanta, wojskowego czy pracownika ochrony. W chwili uderzenia pocisku w pakiet balistyczny chroniący ciało człowieka następuje przejmowanie energii pocisku przez warstwy osłony balistycznej. Jednakże część energii pocisku, która nie zostanie absorbowana przez warstwy...
Article
The present paper describes an instrumental method for the assessment of fabric pilling intensity, whose starting value is represented by the degree of fabric surface filling with pilling. This factor constitutes an alternative to the currently used scale of pilling evaluation in the form of pilling gradation and degree. The method is based on usin...
Article
Full-text available
In production processes artificial UV sources are frequently used, which can generate UV radiation within the range from 200 nm to 400 nm. The intensity of UV radiation generated by artificial sources and affecting the body may be hundreds of times larger than natural solar UV radiation. Exposure of the human body to this type of radiation leads to...
Conference Paper
Full-text available
Many professional groups such as policemen, soldiers, security personnel are exposed to impact bullet. Therefore, it is important that of great importance in such cases they have textile body armor. The aim of presented research is to minimize ballistic trauma during non-penetrated hitting of bullet in a human torso protected by textile body armor....
Article
Full-text available
Work associated with obtaining an electroconductive layer on the surface of selected textile structures using vacuum deposition technology is described in the paper. The vacuum deposition method gives the opportunity to receive products if the metal layers obtained have good electrical conductivity with just the adhesion of particles to the textile...
Article
Full-text available
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...
Article
The textile electrodes are used to muscles electrostimulati on during the therapy. The textile electrodes are new product which can replace the traditional metal or graphite electrodes. They are elastic and good fitted to body shape (legs or arms). The presented solution decreased contact resistance between textile electrodes and human skin. The el...
Article
Full-text available
Processes of linking polymer coatings which functionalise textiles in the presence of photoinitiators require using high-energy UV radiation sources. However, the values of radiation intensities and UV doses used should be controlled so that they will not be greater than required by the proper course of the linking process, on account of the high d...
Article
Full-text available
Processes of the latticing of polymer overprints functionalising textiles in the presence of photoinitiators require using high-energy UV radiation sources. However, the values of radiation intensities and UV doses used should be controlled so that they are no greater than those required by the proper course of the latticing process, on account of...
Article
Full-text available
This article presents the results of an investigation aimed at improving the visibility of road and street users. Within the scope of this investigation, the following research works have been carried out: the currently available options for applying fluorescent woven fabrics on warning clothing are considered; the casualty scale of pedestrian road...
Article
Full-text available
When considering the anti-impact applications of flat textile products, we must take account of the effect of a tension wave on the product structure. Such a wave forces the creation of fast-changing deformations and active tensions. An example of anti-impact applications of flat textile products are ballistic textile barriers, in which deformation...
Article
Full-text available
48 n Introduction Traditional textile products, depend-ing on their structure, are characterised by a different grade of anisotropy of the physico-mechanical properties [1]. However, new, non-classical textile ap-plications demand not only materials with high strength parameters, but also an ever higher isotropy of their proper-ties. Isotropy tests...
Article
A feasible possibility exists of generating longitudinal loads in the form of tension pulses during the processing and use of visco-elastic linear textile products. The propagation of such pulses can be accompanied by hitherto unexamined phenomena different from those occurring over the time of static loading; among other such, the phenomenon of po...
Article
The character of destruction and degradation of visco-elastic linear textile products, when they are dynamically processed or used, poses a problem of significant importance. The criterion selected far analysis of their destruction is the kinematics of the products under relevant conditions. A method is proposed for measurement of the displacements...
Article
Dotychczasowe badania i rozwój skuteczności włókienniczych barier balistycznych opierają się przede wszystkim na doskonaleniu własności wytrzymałościowych surowca użytego do ich budowy. Używane powszechnie płaskie bariery włókiennicze są to tkaniny, w których struktura geometryczna może odgrywać istotną rolę w wytrzymałości balistycznej zbudowanego...

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Projects (2)
Project
Fabrication of gas sensors on textile substrates by ink-jet deposition of electroconductive electrodes with using a silver based ink and gas active layers with using a polymer based ink.