Development of upholstery electro-fabric for smart textile applications

Smart textile products developed by evaluating the human body’s data through sensors have become widespread in recent years. The majority of these products include textile-based information and communication technologies that integrate electronic components into clothing. People use seats, chairs, armchairs, etc., to sit constantly in vehicles, work or at home. The use of these items varies according to the requirements and purposes. In this study, an electro-textile-based upholstery fabric design was carried out to be used in sitting furniture. Electronic components containing capacitive sensors were placed in the designed fabric structure to make it usable in different areas where upholstery fabrics are used. In addition, the sensor connection circuit was developed to receive data from the fabric surface. The data taken from the fabric surface were made meaningful using the calibration and normalization algorithm. The 3D pressing map of the reaction on the fabric surface for different sitting positions was drawn. Electromagnetic field and vibration tests were carried out to examine the response behaviour in different environments where the fabric can be used. According to the findings, it was observed that the pressing areas formed on the surface were displayed in a significant way over the 3D pressing map, and the system was not affected by the electromagnetic field and vibrations. Besides, the fabric was applied on the various surfaces to test calibration and threshold algorithm. Obtained results and circumstances showed that the designed calibration and threshold algorithm were successful to obtained significant results. As a result of the study, upholstery electro fabric with a response time of 0.01 seconds in data collection was developed, which can be used in different environments such as home, workplace and vehicle. It can be used over furniture and in wet and dry conditions and is not affected by the electromagnetic field and vibration in the environment.

Designing Architecture Blockchain of Hyperledger Fabric for Purchasing Strategy

Hyperledger Fabric refers to a blockchain technology regulated by the Linux Foundation, which implements a blockchain network, namely the permission blockchain. The network provides a membership service concept, which means that only certain parties can transact and access data. This research will show the blockchain architecture design of the hyperledger fabric, which is designed for the purchasing strategy of recycled waste products. The design will be used to make purchases for managing distributors in buying recycled waste products from waste banks as raw materials to be processed. The traditional purchasing process using the bank as a third party will take longer and will be more expensive. Therefore, this research aims to improve data security and transparency between the authorities and direct the payment process in an instant and dramatically reduce transaction costs. Besides, this design can also be applied to any e-commerce. The method used is blockchain, which focuses on hyperledger fabric design. The position on the hyperledger fabric is only applied to the transaction processing of the hyperledger fabric. This study's results apply a design to a blockchain system using a hyperledger fabric to overcome several technical problems related to blockchains such as throughput, scalability, and interoperability and contribute to purchasing strategies.

On the robust Newton’s method with the Mann iteration and the artistic patterns from its dynamics

There are two main aims of this paper. The first one is to show some improvement of the robust Newton’s method (RNM) introduced recently by Kalantari. The RNM is a generalisation of the well-known Newton’s root finding method. Since the base method is undefined at critical points, the RNM allows working also at such points. In this paper, we improve the RNM method by applying the Mann iteration instead of the standard Picard iteration. This leads to an essential decrease in the number of root finding steps without visible destroying the sharp boundaries among the basins of attractions presented in polynomiographs. Furthermore, we investigate visually the dynamics of the RNM with the Mann iteration together with the basins of attraction for varying Mann’s iteration parameter with the help of polynomiographs for several polynomials. The second aim of this paper is to present the intriguing polynomiographs obtained from the dynamics of the RNM with the Mann iteration under various sequences used in this iteration. The obtained polynomiographs differ considerably from the ones obtained with the RNM and are interesting from the artistic perspective. Moreover, they can easily find applications in wallpaper or fabric design.

Influence of re-entrant hexagonal structure and helical auxetic yarn on the tensile and auxetic behavior of parametric fabrics

This paper focuses on systematically analyzing the influence of macro fabric structure and yarn architecture on the mechanical and auxetic performance of parametric auxetic fabrics. Re-entrant hexagonal (REH) and helical auxetic yarn (HAY) were adopted as a macro fabric structure and weft yarn to produce three kinds of auxetic fabrics: REH fabric with HAY as weft yarn (REH-HAY); REH fabric with elastic yarn as weft yarn (REH-1, REH-2, REH-3); and plain fabric with HAY as weft yarn (NREH-HAY). By controlling the existence of the HAY and REH structure, the influence of the REH structure and HAY on the mechanical and auxetic properties was thoroughly analyzed. It is demonstrated that both the REH macrostructure and HAY micro configuration can contribute to the performance of the auxetic fabric. Specifically, in the presence of the REH structure and HAY, the auxeticity was found to a 77% increase compared with NREH-HAY and the breaking strain and load rises by about 37.50% and 90.42%, respectively. Notably, the variation of the polyurethane (PU) weft yarn per unit length influenced the tensile and auxetic performance to a lesser extent, while by changing PU to HAY, a significant increase of negative Poisson’s ratio value from –1.155 to –1.492 was noticed without greatly jeopardizing the stretchability. Furthermore, the cyclic tensile results demonstrate the stability and elasticity of the fabric. The comparative analysis can give guidance to optimize fabric design and inspire the innovative design of the auxetic textiles, all of which will pave the way for a quantitative and optimizing design for auxetic textiles.

Soft robotic fabric design, fabrication, and thermoregulation evaluation

Usually, traditional insulation materials have a constant thermal resistance value that cannot change within the ambient temperature and will decrease as ambient humidity or external stress increases. Humans heavily rely on heating, ventilation, and air conditioning (HVAC) systems to meet the thermal comfort requirements of their bodies, giving rise to energy waste and global warming. As an infinitely available natural resource, air is one of the most efficient thermal retaining substances known to science. Inspired by soft pneumatic robotics, we propose an architecture for air-driven thermoregulation fabrics called soft robotic fabrics (SRF). By changing the thickness of trapped air layer in fabric system through SRF, wearers could modify garments’ thermal insulation performance. A fabrication method is introduced to rapidly manufacture low-cost pneumatic structures using various types of construction and dimensions. With excellent ductility, elasticity, and compression resistance, the thickness of SRF increases by 12 times or more after inflation, and the fabric even can lift an object 270 times heavier than its weight. The excellent deformability can effectively increase stable air layer between clothing and skin. Based on the Predicted Mean Vote–Predicted Percentage of Dissatisfied model, the thermoregulation capability of SRF helps HVAC expand the temperature setpoint range by 3–8 times when compared with traditional fabrics, and has far-reaching significance in saving energy.

Effect of fabric surface’s cleanliness on its moisture/air permeability

A fabric?s moisture/air permeability is a main factor for the fabric design for advanced applications, and no theoretical model was available in literature for an optimal permeability. In this paper, we use the capillary-like effect to elucidate the permeability property, and the effect of nano/micro particles on the fabric?s surface on the permeability is studied by the geometric potential theory. Our theoretical analysis shows that an unclean surface gives a negative impact on the permeability. A superhydrophobic surface is needed to design a good and lasting moisture/air permeability.

Identification of influence factors on physical-mechanical properties, using the principal component analysis, in selecting the textile fabrics for the clothing products

The paper aims to highlight the correlations between the physical-mechanical properties of woven fabrics made of combed wool yarn with different fibrous compositions, using the Principal Component Analysis (PCA) method. Based on the information on each fabric/assortment group, it is found that four main factors were extracted: durability, comfort, production price and fabric design. The extracted components explain 92% of the variability of the twelve initial inter-correlated variables, so that we can considerably reduce the complexity of the data configured using these components, with only 8% loss of information. This technique that follows the controlled reduction of the number of variables can be used subsequently for modelling the physical-mechanical properties of the fabrics and for selecting the most suitable fabrics to satisfy the requirements of a particular field of use

Integrating Malaysian and Japanese Textile Motifs Through Product Diversification: Home Décor

Malaysian textile motifs especially the Batik motifs and its product are highly potential to sustain in a global market. The integration of intercultural design of Malaysian textile motifs and Japanese textile motifs will further facilitate both textile industries to be sustained and demanded globally. Besides, Malaysian and Japanese textile motifs can be creatively design on other platforms not limited to the clothes. Therefore, this study is carried out with the aim of integrating the Malaysian textile motifs specifically focuses on batik motifs and Japanese textile motifs through product diversification. This study focuses on integrating both textile motifs and diversified the design on a home décor including wall frame, table clothes, table runner, bed sheets, lamp shades and other potential home accessories. In this concept paper, literature search was conducted to describe about the characteristics of both Malaysian and Japanese textile motifs and also to reveal insights about the practicality and the potential of combining these two worldwide known textile industries. The investigation was conducted to explore new pattern of the combined textiles motifs. The new combined pattern is visually presented as an outcome of this study. An integration of Malaysian and Japanese textile motif aims to strategize the coverage of Malaysian and Japanese textile motifs in a global market. This idea may also contribute to the new opportunities for Malaysian and Japanese textile producers in expanding their design not merely on the clothes fabric but also towards the home decor fabric design. This will turn into additional profit making and increasing economic growth of both countries as well as expanding the traditional textiles industry.

APPLICATION OF ORIGINAL WOVEN SURFACE DESIGNS ON THE CLOTHING

Woven fabrics date back to the ancient ages and have been extensively used particularly in apparel, home textile, and other industries. The selection of yarn and knitting technique are among the important factors in fabrication of woven fabric surfaces with high aesthetical value. Particularly color selection for yarn used in fabrication of woven fabrics has a significant effect on the appearance of the final product. The ever-increasing quality of life brings about the need for new and different looks among individuals. In this work, the course of development and fabrication for a simple woven fabric has been studied, and the obtained products were used in apparel designs. In this context, first the theme was determined, and then pattern designs and patterns were woven in 25*25 cm size. The woven fabrics were used as detail on different parts of outfits designed under the theme “steet fashion”. Also, two of the designs were chosen and manufactured as final-products. Accordingly, different and modern designs were introduced by bringing the obtained woven surfaces together with dresses. Keywords: woven design, plain weave, fabric design, clothing design